Reyrolle Protection Devices. 7PG11-18 Alpha Electromechanical Relays. Siemens. Answers for energy.

Transcription

1 Reyrolle Protection Devices 7PG11-18 Alpha Electromechanical Relays Answers for energy. Siemens

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3 Alpha Technical Manual Contents Contents Technical Manual Chapters 1. Introduction to Electromechanical Relays 2. AR Auxiliary Relays 3. MR Measuring Relays 4. TR High Speed Tripping Relays 5. TR-A High Speed Tripping Relays 6. VR Over and Under Voltage Relays 7. XR Interposing, Supervision and Special Purpose Relays Siemens 2013 Siemens Protection Devices Limited

4 2013 Siemens Protection Devices Limited Alpha Technical Manual Contents

5 Introduction to Electromechanical Relays Introduction to Electromechanical Relays Construction and Principles of Operation of Attracted Armature Relays Document Release History This document is issue The list of revisions up to and including this issue is: 2013 First Issue Siemens 2013 Siemens Protection Devices Limited Chapter 1 Page 1 of 12

6 Introduction to Electromechanical Relays Contents 1 Electromechanical Relays The Electromagnet...3 Figure 1-1 Principle elements of an Electromechanical Relay Simple relay elements...4 Figure 1-2 Basic Layout of an Electromagnet relay...4 Figure 1-3 Basic Layout of a typical Alpha Relay Magnetic Reluctance...6 Figure 1-4 Graph displaying the build up of current in a relay coil Radio Metal Time Lag Relays Relay with Heel End slug Operating Condition...7 Figure 1-5 Relay with heel end slug Relay with Heel End slug Resetting Condition...8 Figure 1-6 Relay with heel end slug Relay with Armature End slug Operating Condition...8 Figure 1-7 Relay with armature end slug Relay with Armature End slug Resetting Condition...9 Figure 1-8 Relay with armature end slug Contacts Contact Material Contact Arching Material Transfer and Material Loss Contact Protection Back EMF Back EMF Suppression Flywheel Diode...11 List of Figures Figure 1-1 Principle elements of an Electromechanical Relay...3 Figure 1-2 Basic Layout of an Electromagnet relay...4 Figure 1-3 Basic Layout of a typical Alpha Relay...5 Figure 1-4 Side and Front End view of a Tripping Relay...5 Figure 1-4 Graph displaying the build up of current in a relay coil...6 Figure 1-5 Relay with heel end slug...7 Figure 1-6 Relay with heel end slug...8 Figure 1-7 Relay with armature end slug...8 Figure 1-8 Relay with armature end slug Siemens Protection Devices Limited Chapter 1 Page 2 of 12

7 Introduction to Electromechanical Relays 1 Electromechanical Relays A relay could be defined as an electrically operated switch for opening and closing circuits. The principle of Electromagnets is used to operate the switch in the Alpha range of relays. 1.1 The Electromagnet A simple example of an electromagnet is shown in Figure 1-1. A coil of wire is wound around a soft-iron core. This iron is shaped like a horseshoe and is known as the core. A piece of soft iron, known as the armature is located near to the core. The armature is pivoted at one end and is held away from the core by a spring. (As shown in Figure 1-1) Figure 1-1 Principal elements of an Electromechanical Relay Circuit A in Figure 1-1 allows the electromagnet to become a relay. When current is flowing in the coil winding and the un-pivoted end of the armature is attracted to the core, circuit A is completed because the Circuit A contacts touch. The moving of the un-pivoted end of the armature to the core could be thought of as the closing of the switch in the analogy of a relay being an electrically operated switch. Siemens 2013 Siemens Protection Devices Limited Chapter 1 Page 3 of 12

8 Introduction to Electromechanical Relays 1.2 Simple relay elements Figure 1-2 shows the basic lay out of an electromagnetic relay. This skeleton relay is of a popular style of assembly and forms the basis for all the Alpha relays. For ease of construction and to save space the core is made in the form of a straight bar but a magnetic circuit of horseshoe shape is obtained by means of the yoke. Figure 1-2 Basic Layout of an Electromagnet relay The component parts are as follows: Core, consisting of a soft-iron rod with an enlarged end called the pole face. Coil Winding, consisting of insulated wire round the core. * Yoke, L shaped piece of soft iron attached at one end to the coil. (Known as the heel end.) Armature, L shaped piece of soft iron pivoted at the front end of the yoke. A contact stack, mounted on the yoke and operated by the moving armature. *Complete assembly of core and the coil winding is called the coil. When a current flows in the coil winding, a magnetic field is built up. The majority of the magnetic lines of force (flux) follow the blue dotted line shown in Figure 1-2. The armature is therefore attracted to the core, consequently operating the lever spring and closing the contacts. When the current is removed from the coil winding, the magnetic field collapses and the mechanical pressure of the contact springs causes the armature and the contacts to return to there normal (reset) positions Siemens Protection Devices Limited Chapter 1 Page 4 of 12

9 Introduction to Electromechanical Relays Figure 1-3 Basic Layout of a typical Alpha Relay Make Contacts Flag Coil Flag Arm Armature Armature Figure 1-4 Side and Front End view of an Alpha Tripping Relay Siemens 2013 Siemens Protection Devices Limited Chapter 1 Page 5 of 12

10 Introduction to Electromechanical Relays 1.3 Magnetic Reluctance The magnetic circuit is important to the correct operation and adjustment of a relay. It consists of the core, yoke, armature and the space or air-gap between the pole-face of the core and the armature. For the relay to operate or pick-up, the current flowing in the coil must create sufficient force to overcome the weight of the contact stack and allow the armature to move towards the pole-face. The magnetic force produced is proportional to the current flowing multiplied by the number of turns on the coil (the Ampere-Turns). The Ampere-Turns used, are kept as low as possible in order to reduce the burden (amount of electrical power needed to operate the relay). The reluctance of the magnetic circuit must also be kept low. The magnetic reluctance is kept low by the following steps: The core, yoke and armature are all made from Radio metal this is a 48% nickel iron alloy which is heat treated to enhance its magnetic properties. The air-gap is kept as small as possible. The air-gap causes the greatest amount of the total reluctance in the relay. The pole-face may be enlarged on the end of the core. This further reduces the reluctance of the air-gap i I 1 e Rt L Build up of current (Fraction o final value) (A) Time (ms) Figure 1-5 Graph displaying the build up of current in a relay coil The relay coil possesses Inductance, which tends to slow the rise in current when the relay is energised. This slows the build-up of the magnetic flux and so causes an operate delay in the relay. Figure 1-5 shows the build up of current in a relay coil. Figure 1-5 shows that for a relay operating at 50%, the operating delay will be typically 40ms Siemens Protection Devices Limited Chapter 1 Page 6 of 12

11 Introduction to Electromechanical Relays Radio Metal Radio metal is used for the magnetic circuit for two main reasons: 1. It can carry a high level of magnetic flux (and so has a low reluctance). 2. This material quickly loses it s magnetic flux once the relay is switched off. This allows the armature to release quickly and the relay has a fast reset. The distance the armature moves is known as the travel of the relay. This must be less than the air-gap, in order to allow the residual air-gap to be present. The residual air-gap allows the armature release to be controlled. 1.4 Time Lag Relays For specific tasks it is a requirement to delay the operation of the relay element or delay the resetting of the relay element. Eddy currents are present in all relays, these tend to increase the operate and reset time of the element. The Eddy current effect can be increased by providing a closed path of low resistance around the core. For this a copper Slug is fitted to the relay core, next to the coil. The magnetic effects produced by the eddy currents depend on the position of the slug on the core Relay with Heel End slug Operating Condition Figure 1-6 Relay with heel end slug When the coil is energised, the rising flux induces a heavy eddy current in the slug, which in turn sets up a magnetizing force in opposition to the main current. The flux due to the coil will tend to avoid entering the slug, therefore it will leak across to the yoke (as shown) completing the magnetic circuit and operating the relay. Therefore a heel-end slug will have little effect upon the operate time of a relay. Siemens 2013 Siemens Protection Devices Limited Chapter 1 Page 7 of 12

12 Introduction to Electromechanical Relays Relay with Heel End slug Resetting Condition Figure 1-7 Relay with heel end slug When the relay is switched off, the current drops to zero immediately, but the eddy currents allow the flux to be maintained as they decay. A heel-end slug will therefore give a drop-off delay to the element. The time for which the relay will remain operated depends upon the size of the slug and the force of the contacts tending to reset the element Relay with Armature End slug Operating Condition Figure 1-8 Relay with armature end slug When the coil is energised, the rising flux induces an eddy current in the slug, which in turn sets up a magnetizing force in opposition to the main current. The flux due to the coil will tend to avoid entering the slug, therefore it will leak across to the yoke (as shown). The leakage flux completes the magnetic circuit, without operating the relay as it does not pass through the armature. Once the eddy current dies down, the flux will pass through the slug and operate the relay. Therefore an armature-end slug will effect the operate time of a relay Siemens Protection Devices Limited Chapter 1 Page 8 of 12

13 Introduction to Electromechanical Relays Relay with Armature End slug Resetting Condition Figure 1-9 Relay with armature end slug When the relay is switched off, the current drops to zero immediately, but the eddy currents allow the flux to be maintained as they decay. An armature-end slug will therefore give a drop-off delay to the element. The time for which the relay will remain operated depends upon the size of the slug and the force of the contacts tending to reset the element. 1.5 Contacts There are three basic contact types: 1. Make (or Normally Open). A make contact pair is one which will close and carry current when the relay is operated. 2. Break (or Normally Closed). A break contact pair is one which will open and interrupt current when the relay is operated. 3. Changeover. A combination of the above using three contacts, in which the moving contact is common to both circuits. When the relay is operated the moving contact will break from one fixed contact and make with another as the armature moves Contact Material Fine silver has the highest electrical and thermal properties of all metals. It is the best general purpose contact material available. However, it is affected by sulphidation. This forms a film on the surface of the silver which increases contact interface resistance. Silver and silver alloys sulphidate, therefore contact pressures must be great enough to break through this film. (Controlled arcing will also be helpful in that it burns off the deposit and contact over-travel wipes away the residue.) An interface voltage of several tenths of a volt can result with fine silver contacts because of the sulphide film. Breaking through this film generates used for low-level switching. Fine silver and silver alloy contacts are for use in circuits of 12 volts, 0.4 ampere, or more Contact Arcing An electrical arc occurs between the two contact tips when they change from a closed to an open state (break arc) or from an open to a closed state (make arc). The break arc is typically more energetic and thus more destructive. The heat energy contained in the electrical arc is very high, causing the metal on the contact to melt & migrate with the current. The extremely high temperature of the arc breaks down the surrounding air creating ozone, carbon monoxide, and other compounds. The arc energy slowly destroys the contact metal, causing some material to escape into the air as fine particulate matter. This activity causes the material in the contacts to degrade over time, ultimately resulting in device failure. For example, a properly applied relay may have a life span of 10,000 to 100,000 operations when run under power. This is significantly less than the mechanical life of the same device which can be in excess of a million operations. Siemens 2013 Siemens Protection Devices Limited Chapter 1 Page 9 of 12

14 Introduction to Electromechanical Relays Material Transfer and Material Loss As switch contacts begin to separate, the area of contact diminishes. Current flowing through this increasingly constricted area generates heat which causes the contact material to melt, then boil. The liquefied metal tends to collect on the cathode contact because that contact is cooler than the anode contact. Material transfer also occurs during arcing. However, under this condition, material transfer is from cathode to anode the amount of transfer being dependent on the severity and duration of the arc, and the type of contact material used. Material loss is due primarily to splattering of the molten and boiling metal as contacts bounce on make. Such loss can be significant over the course of thousands of operations, and the only practical way to minimize it is by arc suppression. Arc suppression quickly quenches the arc, thereby holding contact temperatures lower Contact Protection Perhaps the most popular method of quenching an arc between separating contacts is with a Resistor-Capacitor network placed directly across the contacts. As the contacts just begin to separate and an arc ignites, load current feeding the arc will be shunted into the capacitor through the series resistance, depriving the arc of some of its energy. As a result, arc duration will be shortened and material loss will be minimized. For quenching DC arcs in certain applications, relays are available that have a permanent magnet located in close proximity to the contacts. The magnet repels the DC arc, thereby stretching the arc and causing it to weaken and extinguish quickly. 1.6 Back EMF Relay coils are a type of electromagnet. The relay coil will store energy when powered and will generate a back EMF, or counter EMF (CEMF), when the supply is switched off. If this back EMF is not controlled or suppressed it will generate very large voltages that in turn can: 1) Cause arcing at contacts, reducing contact life. 2) Generate Interference, which may damage electronics or cause loss of data. A large back EMF will be generated, by the collapsing magnetic field, when the supply to a relay coil is switched off. The disconnected relay coil acts like a current source; generating whatever voltage is necessary to try and keep current flowing through the open contacts. Back EMF cannot be prevented but it can be controlled. In suppressing the back EMF the objective is to prevent the very high voltages and dissipate the stored energy in a safe way Siemens Protection Devices Limited Chapter 1 Page 10 of 12

15 Introduction to Electromechanical Relays Back EMF Suppression Flywheel Diode The current flowing in a relay coil is very like a free spinning flywheel. When the supply voltage is turned off, the wheel keeps turning. The flywheel diode provides a means of applying a brake to the flywheel. When the supply voltage is connected the diode is reverse biased and is effectively out of circuit. When the switch opens flywheel current produces a back EMF in the opposite polarity and so the diode will conduct. The diode does a very good job of suppressing the back EMF and clamps the voltage to around a volt. Switch - Battery + - Diode Current + Siemens 2013 Siemens Protection Devices Limited Chapter 1 Page 11 of 12

16 Introduction to Electromechanical Relays 2013 Siemens Protection Devices Limited Chapter 1 Page 12 of 12

17 AR Auxiliary Relay 7PG11 AR Relays Auxiliary Relay Document Release History This document is issue The list of revisions up to and including this issue is: 2013 First Issue Siemens 2013 Siemens Protection Devices Limited Chapter 2 Page 1 of 48

18 AR Auxiliary Relay Contents 1 Introduction Contact Reset Self Reset Hand Reset Electrical Reset Hand and Electrical Reset Self and Hand Reset Flag Reset Self Reset Hand Reset Self Reset Reverse Acting Hand Reset Reverse Acting Special features Delay on Energisation/De-Energisation Series Break Suppression diode Description of Operation PG (AR101) PG1110-1**0 (AR101 2 contact) 7PG1110-1**1 (AR101 4 contact) PG1110-1**3 (AR101 6 contact) 7PG1110-1**5 (AR101 8 contact) PG1110-1***0-0A*1 (AR101D) PG (AR103) PG1110-3**0 (AR103 4 contact) 7PG1110-3**1 (AR103 6 contact) PG1110-3**5 (AR103 8 contact) PG1110-3***0-0A*1 (AR103D) PG (AR106) PG1110-6**0 (AR106 2 contact) 7PG1110-6**1 (AR106 4 contact) PG1110-6**3 (AR106 6 contact) PG1110-6***0-0A*1 (AR106D) PG (AR111) PG1111-1**0 (AR111 2 contact) 7PG1111-1**1 (AR111 4 contact) PG1111-1**3 (AR111 6 contact) 7PG1111-1**5 (AR111 8 contact) PG1111-1***0-0A*1 (AR111D) PG (AR112) PG1111-2**0 (AR112 2 contact) 7PG1111-2**1 (AR112 4 contact) PG1111-2**3 (AR112 6 contact) 7PG1111-2**5 (AR112 8 contact) PG1111-2***0-0A*1 (AR112D) PG1111-2***4 (AR112SB) PG1111-2**0 (AR112 2 contact (1 User available contact)) 7PG1111-2**1 (AR112 4 contact (3 User available contacts)) PG1111-2**3 (AR112 6 contact (5 User available contacts)) 7PG1111-2**5 (AR112 8 contact (7 User available contacts)) PG1111-2***4-0A*1 (AR112 SB D) PG (AR113) PG1111-3**0 (AR113 4 contacts) 7PG1111-3**1 (AR113 6 contacts) PG1111-3**5 (AR113 8 contacts) PG1111-3***0-0A*1 (AR113D) PG (AR114) PG1111-4**1 (AR114 4 contact) PG1111-4**3 (AR114 6 contact) PG1111-4****-0A*1 (AR114D) PG (AR121) PG1112-1**0 (AR121 2 contact) 7PG1112-1**1 (AR121 4 contact) PG1112-1**3 (AR121 6 contact) 7PG1112-1**5 (AR121 8 contact) Siemens Protection Devices Limited Chapter 2 Page 2 of 48

19 AR Auxiliary Relay PG1112-1***0-0A*1 (AR121D) PG (AR124) PG1112-4**1 (AR124 4 contact) PG1112-4**3 (AR124 6 contact) PG1112-4****-0A*1 (AR124D) PG (AR131) PG1113-1**0 (AR131 2 contact) 7PG1113-1**1 (AR131 4 contact) PG1113-1***0-0A*1 (AR131D) PG (AR133) PG1113-3**0 (AR133 2 contact) 7PG1113-3**1 (AR133 4 contact) PG1113-3**3 (AR133 6 contact) 7PG1113-3**5 (AR133 8 contact (7 User available contacts)) PG1113-3***0-0A*1 (AR133D) PG (AR136) PG1113-6**0 (AR136 2 contact) 7PG1113-6**1 (AR136 4 contact) PG1113-6**3 (AR136 6 contact) PG1113-6***0-0A*1 (AR136D) PG (AR141) PG1114-1**0 (AR141 2 contact) 7PG1114-1**1 (AR141 4 contact) PG1114-1**3 (AR141 6 contact) PG1114-1***0-0A*1 (AR141D) PG1110-7AE10-0A*0 (AR 901) PG1110-7AE10-0A*0 (AR 901) Performance Specification...39 Technical Information Rated Voltage Vn (AC) Rated Voltage Vn (DC) Nominal Burdens Contacts Environmental Insulation Transient Overvoltage Installation Unpacking, Storage and Handling Wiring Front Cover Fixings Crimps Panel Fixings Relay Dimensions and Panel Fixings E2 Case Dimensions E4 Case Dimensions Maintenance Safety Unpacking, Handling and Storage Preliminary Tests Mechanical Settings Contacts Applications AR 101 Trip Relay Auto Reset interlocking Relay...45 Figure 6-1 Applications Diagram: 7PG (AR 101) AR 111 Intertrip Receive Trip Relay Auto Reset scheme...46 Figure 6-2 Applications Diagram: 7PG (AR 111)...46 Siemens 2013 Siemens Protection Devices Limited Chapter 2 Page 3 of 48

20 AR Auxiliary Relay 6.3 AR 901 Current Transformer Shorting Relay Scheme...47 Figure 6-3 Applications Diagram: 7PG (AR 901)...47 List of Figures Figure 2-1 Functional Diagram: 7PG1110-1**0 and 7PG1110-1** Figure 2-2 Functional Diagram: 7PG1110-1**3 and 7PG1110-1** Figure 2-3 Functional Diagram: 7PG1110-3**1 and 7PG1110-3** Figure 2-4 Functional Diagram: 7PG1110-3** Figure 2-5 Functional Diagram: 7PG1110-6**0 and 7PG1110-6** Figure 2-6 Functional Diagram: 7PG1110-6** Figure 2-7 Functional Diagram: 7PG1111-1**0 and 7PG1111-1** Figure 2-8 Functional Diagram: 7PG1111-1**3 and 7PG1111-1** Figure 2-9 Functional Diagram: 7PG1111-2**0 and 7PG1111-2** Figure 2-10 Functional Diagram: 7PG1111-2**3 and 7PG1111-2** Figure 2-11 Functional Diagram: 7PG1111-2**04 and 7PG1111-2** Figure 2-12 Functional Diagram: 7PG1111-2**34 and 7PG1111-2** Figure 2-13 Functional Diagram: 7PG1111-3**1 and 7PG1111-3** Figure 2-14 Functional Diagram: 7PG1111-3** Figure 2-15 Functional Diagram: 7PG1111-4** Figure 2-16 Functional Diagram: 7PG1111-4** Figure 2-17 Functional Diagram: 7PG1112-1**0 and 7PG1112-1** Figure 2-18 Functional Diagram: 7PG1112-1**3 and 7PG1112-1** Figure 2-19 Functional Diagram: 7PG1112-4** Figure 2-20 Functional Diagram: 7PG1112-4** Figure 2-21 Functional Diagram: 7PG1113-1**0 and 7PG1113-1** Figure 2-22 Functional Diagram: 7PG1113-1** Figure 2-23 Functional Diagram: 7PG1113-3**0 and 7PG1113-3** Figure 2-24 Functional Diagram: 7PG1113-3**3 and 7PG1113-3** Figure 2-25 Functional Diagram: 7PG1113-6**0 and 7PG1113-6** Figure 2-26 Functional Diagram: 7PG1113-6** Figure 2-27 Functional Diagram: 7PG1114-1**0 and 7PG1114-1** Figure 2-28 Functional Diagram: 7PG1114-1** Figure 2-29 Functional Diagram: 7PG1110-7AE10-0A* Figure 6-1 Applications Diagram: 7PG (AR 101)...45 Figure 6-2 Applications Diagram: 7PG (AR 111)...46 Figure 6-3 Applications Diagram: 7PG (AR 901)...47 List of Tables Table 1-1 Numbering of Relay Features...7 Table 1-2 Relay Features...7 Table 1-3 Delay Times on De-Energisation...8 Table 1-4 Delay Times on Energisation...8 Table 2-1 Contact Terminal Numbers (AR101) (2 contact and 4 contact)...10 Table 2-2 Contact Terminal Numbers (AR101) (6 contact and 8 contact)...11 Table 2-3 Contact Terminal Numbers (AR103) (4 contact and 6 contact)...12 Table 2-4 Contact Terminal Numbers (AR103) (8 contact)...13 Table 2-5 Contact Terminal Numbers (AR106) (2 contact and 4 contact)...14 Table 2-6 Contact Terminal Numbers (AR106) (6 contact)...15 Table 2-7 Contact Terminal Numbers (AR111) (2 contact and 4 contact)...16 Table 2-8 Contact Terminal Numbers (AR111) (6 contact and 8 contact)...17 Table 2-9 Contact Terminal Numbers (AR112) (2 contact and 4 contact)...18 Table 2-10 Contact Terminal Numbers (AR112) (6 contact and 8 contact)...19 Table 2-11 Contact Terminal Numbers (AR112SB) (2 contact and 4 contact)...20 Table 2-12 Contact Terminal Numbers (AR112SB) (6 contact and 8 contact)...21 Table 2-13 Contact Terminal Numbers (AR113) (4 contact and 6 contact) Siemens Protection Devices Limited Chapter 2 Page 4 of 48

21 AR Auxiliary Relay Table 2-14 Contact Terminal Numbers (AR113) (8 contact)...23 Table 2-15 Contact Terminal Numbers (AR114) (4 contact)...24 Table 2-16 Contact Terminal Numbers (AR114) (6 contact)...25 Table 2-17 Contact Terminal Numbers (AR121) (2 contact and 4 contact)...26 Table 2-18 Contact Terminal Numbers (AR121) (6 contact and 8 contact)...27 Table 2-19 Contact Terminal Numbers (AR124) (4 Contact)...28 Table 2-20 Contact Terminal Numbers (AR124) (6 Contact)...29 Table 2-21 Contact Terminal Numbers (AR131) (2 contact and 4 contact)...30 Table 2-22 Contact Terminal Numbers (AR131) (6 contact)...31 Table 2-23 Contact Terminal Numbers (AR133) (2 contact and 4 contact)...32 Table 2-24 Contact Terminal Numbers (AR133) (6 contact and 8 contact)...33 Table 2-25 Contact Terminal Numbers (AR136) (2 contact and 4 contact)...34 Table 2-26 Contact Terminal Numbers (AR136) (6 contact)...35 Table 2-27 Contact Terminal Numbers (AR141) (2 contact and 4 contact)...36 Table 2-28 Contact Terminal Numbers (AR141) (6 contact)...37 Siemens 2013 Siemens Protection Devices Limited Chapter 2 Page 5 of 48

22 AR Auxiliary Relay 1 Introduction This manual is applicable to the following relays: 7PG1110-1***00 (AR 101) 7PG1110-3***00 (AR 103) 7PG1110-6***00 (AR 106) 7PG1111-1***00 (AR 111) 7PG1111-2***00 (AR 112) 7PG1111-2***40 (AR 112SB) 7PG1111-3***00 (AR 113) 7PG1111-4***00 (AR 114) 7PG1112-1***00 (AR 121) 7PG1112-4***00 (AR 124) 7PG1113-1***00 (AR 131) 7PG1113-3***00 (AR 133) 7PG1113-6***00 (AR 136) 7PG1114-1***00 (AR 141) 7PG1110-1***0* (AR 101T) 7PG1112-1***0* (AR 111T) 7PG1112-3***0* (AR 112T) 7PG1113-1***0* (AR 121T) 7PG1113-3***0* (AR 131T) 7PG1114-1***0* (AR 141T) 7PG1120-1***00 (AR 201) 7PG1121-1***00 (AR 211) 7PG1121-2***00 (AR 212) 7PG1121-2***40 (AR 212SB) 7PG1122-1***00 (AR 221) 7PG1123-1***00 (AR 231) 7PG1124-1***00 (AR 241) 7PG1120-1***0* (AR 201T) 7PG1122-1***0* (AR 211T) 7PG1121-2***0* (AR 212T) 7PG1122-1***0* (AR 221T) 7PG1123-1***0* (AR 231T) 7PG1124-1***0* (AR 241T) 7PG1110-7AE10-0A*0 (AR 901) 2013 Siemens Protection Devices Limited Chapter 2 Page 6 of 48

23 AR Auxiliary Relay Type AR relays are a range of electro-mechanical relays with up to 8 contacts and complying to BS142. Heavy duty contacts are available on most models. The relays are identified by a series of numbers and letters which define important relay features. Table 1-1 Numbering of Relay Features First Digit Second Digit Type of Flag Third Digit Type of contact reset 0 No Flag 1 Self Number of 1 Hand reset 2 Hand Identical 2 Hand reset reverse acting 3 Electrical & Hand Elements 3 Self reset 4 Hand & Self 4 Self reset reverse acting 6 Electrical AR relays have been developed for use as instantaneous or delayed, self or hand-reset a.c. or d.c. operated repeat contactors with or without mechanical flag indication. The burden on the operate coil is generally small (less than 10 watts) it is for that reason possible to have AR relays continuously rated. An exception to this is the AR 112SB and the AR 212SB. The operate coil in an AR relay is only powerful enough to drive a maximum of 8 contacts. In order to increase the numbers of user available contacts two elements (two operate coils) are used to double the contact availability. Table 1-2 Relay Features MLFB Code Relay Type Number of user available Contacts Contact Reset Arrangement Delay on Energisation/De- Energisation Case Size 7PG1110-1***00 AR 101 2, 4, 6 or 8 Self N.A. E2 7PG1110-3***00 AR 103 4, 6 or 8 Hand & Electrical N.A. E2 7PG1110-6***00 AR 106 2, 4 or 6 Electrical N.A. E2 7PG1111-1***00 AR 111 2, 4, 6 or 8 Self N.A. E2 7PG1111-2***00 AR 112 2, 4, 6 or 8 Hand N.A. E2 7PG1111-2***40 AR 112SB 1, 3, 5 or 7 Hand N.A. E2 7PG1111-3***00 AR 113 4, 6 or 8 Hand & Electrical N.A. E2 7PG1111-4***00 AR or 6 Hand & Self N.A. E2 7PG1112-1***00 AR 121 2, 4, 6 or 8 Self N.A. E2 7PG1112-4***00 AR or 6 Hand & Self N.A. E2 7PG1113-1***00 AR 131 2, 4 or 6 Self N.A. E2 7PG1113-3***00 AR 133 2, 4, 6 or 7 Hand & Electrical N.A. E2 7PG1113-6***00 AR 136 2, 4 or 6 Electrical N.A. E2 7PG1114-1***00 AR 141 2, 4 or 6 Self N.A. E2 7PG1110-1***0* AR 101T 2, 4 or 6 Self T1, T2, T3, T4 E2 7PG1112-1***0* AR 111T 2, 4 or 6 Self T1, T2, T3, T4 E2 7PG1112-3***0* AR 112T 2, 4 or 6 Hand T6 E2 7PG1113-1***0* AR 121T 2, 4 or 6 Self T1, T2, T3, T4 E2 7PG1113-3***0* AR 131T 2 or 4 Self T1, T2, T3 E2 7PG1114-1***0* AR 141T 2 or 4 Self T1, T2, T3 E2 MLFB Code Relay Type User available contacts per element / total number of user available contacts Contact Reset Arrangement Delay on Energisation/De- Energisation Case Size 7PG1120-1***00 AR 201 2, 4 or 6 / 4,8 or 12 Self N.A. E2/E4 7PG1121-1***00 AR 211 2, 4 or 6 / 4,8 or 12 Self N.A. E2/E4 7PG1121-2***00 AR 212 2, 4 or 6 / 4,8 or 12 Hand N.A. E2/E4 7PG1121-2***40 AR 212SB 1, 3 or 5 / 2,6 or 10 Hand N.A. E4 7PG1122-1***00 AR 221 2, 4 or 6 / 4,8 or 12 Self N.A. E2/E4 7PG1123-1***00 AR or 4 / 4 or 8 Self N.A. E2/E4 7PG1124-1***00 AR or 4 / 4 or 8 Self N.A. E2/E4 7PG1120-1***0* AR 201T 2, 4 or 6 / 4,8 or 12 Self T1, T2, T3, T4 E2/E4 7PG1122-1***0* AR 211T 2 or 4 / 4 or 8 Self T1, T2, T3, T4 E2/E4 7PG1121-2***0* AR 212T 2 or 4 / 4 or 8 Hand T6 E4 7PG1122-1***0* AR 221T 2, 4 or 6 / 4,8 or 12 Self T1, T2, T3, T4 E2/E4 7PG1123-1***0* AR 231T 2 or 4 / 4 or 8 Self T1, T2, T3 E2/E4 7PG1124-1***0* AR 241T 2 or 4 / 4 or 8 Self T1, T2, T3 E2/E4 Siemens 2013 Siemens Protection Devices Limited Chapter 2 Page 7 of 48

24 AR Auxiliary Relay Table 1-3 Delay Times on De-Energisation Nominal Time Maximum Number of contacts available AR101T, AR111T, AR121T AR201T, AR211T, AR221T AR131T AR141T AR231T AR241T T1 Up to 100ms 6 4 T2 101 to 200ms 6 4 T3 201 to 300ms 4 2 T4 301 to 400ms 2 N.A. Table 1-4 Delay Times on Energisation Nominal Time Maximum Number of contacts available AR112T, AR212T T6 50ms 6 Relays are set within the range of 80% to 100% of nominal time. 1.1 Contact Reset Self Reset The output contacts of self reset relays are held in the operate position whilst the relay operate coil is energised Hand Reset The contacts of hand reset relays are held in the operated position by a mechanical latch which is released by the reset mechanism Electrical Reset The contacts of electrically reset relays are held in the operated position by a mechanical latch which is released by energising the reset coil Hand and Electrical Reset Hand and electrical reset models can have the main contacts reset either by hand from a mechanical latch on front cover or electrically via the reset coil Self and Hand Reset Self and Hand reset models can have the main contacts reset either by hand from a push button on front cover or via the self reset option discussed in Flag Reset Self Reset While the relay operate coil is energised a flag indicator is displayed Hand Reset When the relay operate coil is energised, the flag indicator is displayed. The indicator remains visible until it is reset by a mechanical lever operated by hand from the front cover of the relay Siemens Protection Devices Limited Chapter 2 Page 8 of 48

25 AR Auxiliary Relay Self Reset Reverse Acting The relay operate coil is normally energised, while the coil de-energises the flag indicator is displayed Hand Reset Reverse Acting The relay operate coil is normally energised, when the operate coil de-energises the flag indicator is displayed. The indicator remains visible until it is reset by a mechanical lever operated by hand from the front cover of the relay. 1.3 Special features Delay on Energisation/De-Energisation The suffix T indicates time delayed relays. The time delay is created by applying a slug to the coil of the relay. The slug fitted at the armature end of the coil causes a delay on Energisation and a slug fitted at the heel end of the slug causes a delay on De-Energisation. Table 1-2 and Table 1-3 show the range of AR relays that have these delays applied and the delay times Series Break The suffix SB identifies a relay with a series break contact to cut-off the operating coil, thus the relay burden becomes zero after operation of this contact. Only available with AR relays which have hand reset contacts Suppression diode The Suffix D indicates a relay fitted with a suppression diode across the coil to reduce the effects of back EMF on switch off. Most of the DC operated Auxiliary relay range can be supplied with a suppression diode. Siemens 2013 Siemens Protection Devices Limited Chapter 2 Page 9 of 48

26 AR Auxiliary Relay 2 Description of Operation 2.1 7PG (AR101) This Auxiliary Relay can be specified with 2, 4, 6 or 8 user available contacts. The Relay can be powered from either a DC or AC supply. For AC applications the supply to the operating coil is converted to DC by a full bridge rectifier (This configuration is shown in Figure 2-1and Figure 2-2). The relay is operated by the protection contact PR. The contacts are held in the operate position until RL1 is deenergised, after this they return to there normal position. (Self Reset) An applications diagram and explanation can be found in Applications 6.1. There is no flag indicator on the front of the relay. This relay is also available with 2 elements therefore doubling the number of user available contacts, the 7PG11201 (AR 201) is supplied with 4, 8 or 12 user available contacts. This relay is also available with a delay on de-energisation, 7PG1110-1***0-*A** (AR101T) / 7PG1120-1***0-**** (AR201T). The AR 101T relay can be specified with 2, 4 or 6 user available contacts. The AR 201T relay can be specified with 4, 8 or 12 user available contacts. The AR 101T / 201T can only be powered from a DC supply PG1110-1**0 (AR101 2 contact) 7PG1110-1**1 (AR101 4 contact) Figure 2-1 Functional Diagram: 7PG1110-1**0 and 7PG1110-1**1 Table 2-1 Contact Terminal Numbers (AR101) (2 contact and 4 contact) Relay Type AR 101 (Max Terminal Numbers Relay Type Number of B contacts) (2 Contact) (4 Contact) PG1110-1*A0/1 0 M M M M M M 7PG1110-1*B0/1 1 M B M B M M 7PG1110-1*C0/1 2 B B B B M M 7PG1110-1*D1 3 B B M B 7PG1110-1*E1 4 B B B B Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact Siemens Protection Devices Limited Chapter 2 Page 10 of 48

27 AR Auxiliary Relay PG1110-1**3 (AR101 6 contact) 7PG1110-1**5 (AR101 8 contact) Figure 2-2 Functional Diagram: 7PG1110-1**3 and 7PG1110-1**5 Table 2-2 Contact Terminal Numbers (AR101) (6 contact and 8 contact) Relay Type 7PG1110-1*A3/5 7PG1110-1*B3/5 7PG1110-1*C3/5 7PG1110-1*D3/5 7PG1110-1*E3/5 7PG1110-1*F3/5 7PG1110-1*G3/5 7PG1110-1*H5 7PG1110-1*J5 Relay Type AR 101 (Max Number of B contacts) (6 Contact) Terminal Numbers (8 Contact) Terminal Numbers M M M M M M M M M M M M M M 1 M B M M M M M M M M M B M M 2 B B M M M M M B M M M B M M 3 B B M B M M M B M M B B M M 4 B B B B M M B B M M B B M M 5 B B B B M B B B M M B B M B 6 B B B B B B B B M B B B M B 7 B B M B B B B B 8 B B M B B B B B Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact. Note: Contact pairing 5-7 on the 7PG1110-1**5 is always a make contact, it is therefore shown this way on Figure PG1110-1***0-0A*1 (AR101D) This relay has the option of a back EMF suppression diode, available only when the Voltage rating (Vn) is DC. The diagram below shows how the operation coil (RL1) is protected by the diode and a varistor. Example of the back EMF supression diode. Siemens 2013 Siemens Protection Devices Limited Chapter 2 Page 11 of 48

28 AR Auxiliary Relay 2.2 7PG (AR103) This Auxiliary Relay can be specified with 4, 6 or 8 user available contacts. The Relay can be powered from either a DC or AC supply. For AC applications the supply to the operating coil and reset coil is converted to DC by a full bridge rectifier (This configuration is shown in Figure 2-3 and Figure 2-4). The relay is operated by the protection contact PR. The relay can be reset either by hand or electrically by operating the reset solenoid. There is no flag indicator on the front of the relay PG1110-3**0 (AR103 4 contact) 7PG1110-3**1 (AR103 6 contact) Figure 2-3 Functional Diagram: 7PG1110-3**1 and 7PG1110-3**3 Table 2-3 Contact Terminal Numbers (AR103) (4 contact and 6 contact) Relay Type Relay Type AR 103 (Max Number of B contacts) (4 Contact) (6 Contact) PG1110-3*A1/3 0 M M M M M M M M M M 7PG1110-3*B1/3 1 M B M M M B M M M M 7PG1110-3*C1/3 2 B B M M B B M M M M 7PG1110-3*D1/3 3 B B M B B B M B M M 7PG1110-3*E1/3 4 B B B B B B B B M M 7PG1110-3*E3 5 B B B B M B 7PG1110-3*E3 6 B B B B B B Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact Siemens Protection Devices Limited Chapter 2 Page 12 of 48

29 AR Auxiliary Relay PG1110-3**5 (AR103 8 contact) PG (AR 103) 8 Contact PR +ve 13 RL1 +ve R1 RESET SOLENOID -ve 14 -ve RL1 RESET SOLENOID R AC Applications Only Figure 2-4 Functional Diagram: 7PG1110-3**5 Table 2-4 Contact Terminal Numbers (AR103) (8 contact) Relay Type 7PG1110-3*A5 7PG1110-3*B5 7PG1110-3*C5 7PG1110-3*D5 7PG1110-3*E5 7PG1110-3*F5 7PG1110-3*G5 7PG1110-3*H5 7PG1110-3*J5 Relay Type AR 103 (Max Number of B contacts) (8 Contact) Terminal Numbers M M M M M M M M 1 M M M M M B M M 2 M B M M M B M M 3 M B M M B B M M 4 B B M M B B M M 5 B B M M B B M B 6 B B M B B B M B 7 B B M B B B B B 8 B B M B B B B B Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact PG1110-3***0-0A*1 (AR103D) This relay has the option of a back EMF suppression diode, available only when the Voltage rating (Vn) is DC. The diagram below shows how the operation coil (RL1) is protected by the diode and a varistor. Example of the back EMF supression diode. Siemens 2013 Siemens Protection Devices Limited Chapter 2 Page 13 of 48

30 AR Auxiliary Relay 2.3 7PG (AR106) This Auxiliary Relay can be specified with 2, 4 or 6 user available contacts. The Relay can be powered from either a DC or AC supply. For AC applications the supply to the operating coil and reset coil is converted to DC by a full bridge rectifier (This configuration is shown in Figure 2-5 and Figure 2-6). The relay is operated by the protection contact PR. The relay is reset electrically by operating the reset solenoid. The relay has the option of a back EMF suppression diode available for the 6 contact relay only when the Voltage rating (Vn) is DC. There is no flag indicator on the front of the relay PG1110-6**0 (AR106 2 contact) 7PG1110-6**1 (AR106 4 contact) Figure 2-5 Functional Diagram: 7PG1110-6**0 and 7PG1110-6**1 Table 2-5 Contact Terminal Numbers (AR106) (2 contact and 4 contact) Relay Type AR 106 (Max Number Terminal Numbers Relay Type of B contacts) (2 Contact) (4 Contact) PG1110-6*A0/1 0 M M M M M M 7PG1110-6*B0/1 1 M B M B M M 7PG1110-6*C0/1 2 B B B B M M 7PG1110-6*D0/1 3 B B M B 7PG1110-6*E0/1 4 B B B B Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact Siemens Protection Devices Limited Chapter 2 Page 14 of 48

31 AR Auxiliary Relay PG1110-6**3 (AR106 6 contact) Figure 2-6 Functional Diagram: 7PG1110-6**3 Table 2-6 Contact Terminal Numbers (AR106) (6 contact) Relay Type Relay Type AR 106 (Max Number of B (6 Contact) Terminal Numbers contacts) PG1110-6*A3 0 M M M M M M 7PG1110-6*B3 1 M B M M M M 7PG1110-6*C3 2 B B M M M M 7PG1110-6*D3 3 B B M B M M 7PG1110-6*E3 4 B B B B M M 7PG1110-6*F3 5 B B B B M B 7PG1110-6*G3 6 B B B B B B Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact PG1110-6***0-0A*1 (AR106D) This relay has the option of a back EMF suppression diode, available only when the Voltage rating (Vn) is DC. The diagram below shows how the operation coil (RL1) is protected by the diode and a varistor. Example of the back EMF supression diode. Siemens 2013 Siemens Protection Devices Limited Chapter 2 Page 15 of 48

32 AR Auxiliary Relay 2.4 7PG (AR111) This Auxiliary Relay can be specified with 2, 4, 6 or 8 user available contacts. The Relay can be powered from either a DC or AC supply. For AC applications the supply to the operating coil is converted to DC by a full bridge rectifier (This configuration is shown in Figure 2-7 and Figure 2-8). The relay is operated by the protection contact PR. The contacts are held in the operate position until RL1 is deenergised, after this they return to there normal position. This is the relay operating as a self reset. An applications diagram and explanation can be found in Applications 6.2. The flag on the front of the relay is reset by hand. This relay is also available with 2 elements therefore doubling the number of user available contacts, the 7PG11201 (AR 201) is supplied with 4, 8 or 12 user available contacts. This relay is also available with a delay on de-energisation, 7PG1111-1***0-**** (AR111T) / 7PG11211***0-**** (AR211T). The AR 111T relay can be specified with 2, 4 or 6 user available contacts. The AR 211T relay can be specified with 4 or 8 user available contacts. The AR 111T / 211T can only be powered from a DC supply PG1111-1**0 (AR111 2 contact) 7PG1111-1**1 (AR111 4 contact) Figure 2-7 Functional Diagram: 7PG1111-1**0 and 7PG1111-1**1 Table 2-7 Contact Terminal Numbers (AR111) (2 contact and 4 contact) Relay Type AR 111 (Max Terminal Numbers Relay Type Number of B contacts) (2 Contact) (4 Contact) PG1111-1*A0/1 0 M M M M M M 7PG1111-1*B0/1 1 M B M B M M 7PG1111-1*C0/1 2 B B B B M M 7PG1111-1*D1 3 B B M B 7PG1111-1*E1 4 B B B B Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact Siemens Protection Devices Limited Chapter 2 Page 16 of 48

33 AR Auxiliary Relay PG1111-1**3 (AR111 6 contact) 7PG1111-1**5 (AR111 8 contact) Figure 2-8 Functional Diagram: 7PG1111-1**3 and 7PG1111-1**5 Table 2-8 Contact Terminal Numbers (AR111) (6 contact and 8 contact) Relay Type 7PG1111-1*A3/5 7PG1111-1*B3/5 7PG1111-1*C3/5 7PG1111-1*D3/5 7PG1111-1*E3/5 7PG1111-1*F3/5 7PG1111-1*G3/5 7PG1111-1*H5 7PG1111-1*J5 Relay Type AR 111 (6 Contact) Terminal Numbers (8 Contact) Terminal Numbers (Max Number of B contacts) 22 0 M M M M M M M M M M M M M M 1 M B M M M M M M M M M B M M 2 B B M M M M M B M M M B M M 3 B B M B M M M B M M B B M M 4 B B B B M M B B M M B B M M 5 B B B B M B B B M M B B M B 6 B B B B B B B B M B B B M B 7 B B M B B B B B 8 B B M B B B B B Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact. Note: Contact pairing 5-7 on the 7PG1111-1**5 is always a make contact, it is therefore shown this way on Figure PG1111-1***0-0A*1 (AR111D) This relay has the option of a back EMF suppression diode, available only when the Voltage rating (Vn) is DC. The diagram below shows how the operation coil (RL1) is protected by the diode and a varistor. Example of the back EMF supression diode. Siemens 2013 Siemens Protection Devices Limited Chapter 2 Page 17 of 48

34 AR Auxiliary Relay 2.5 7PG (AR112) This Auxiliary Relay can be specified with 2, 4, 6 or 8 user available contacts. The Relay can be powered from either a DC or AC supply. For AC applications the supply to the operating coil is converted to DC by a full bridge rectifier (This configuration is shown in Figure 2-9 and Figure 2-10). The relay is operated by the protection contact PR. The contacts are held in the operate position by a mechanical latch. The relay is reset by moving a lever on the front of the relay. The flag on the front of the relay is reset by hand. This relay is also available with 2 elements therefore doubling the number of user available contacts, the 7PG11201 (AR 201) is supplied with 4, 8 or 12 user available contacts. This relay is also available with a delay on de-energisation, 7PG1111-2***0-**** (AR 112T) / 7PG1121-2***0-**** (AR 212T). The AR 112T relay can be specified with 2, 4 or 6 user available contacts. The AR 212T relay can be specified with 4 or 8 user available contacts. The AR 112T / 212T can only be powered from a DC supply PG1111-2**0 (AR112 2 contact) 7PG1111-2**1 (AR112 4 contact) Figure 2-9 Functional Diagram: 7PG1111-2**0 and 7PG1111-2**1 Table 2-9 Contact Terminal Numbers (AR112) (2 contact and 4 contact) Relay Type AR 112 (Max Terminal Numbers Relay Type Number of B contacts) (2 Contact) (4 Contact) PG1111-2*A0/1 0 M M M M M M 7PG1111-2*B0/1 1 M B M B M M 7PG1111-2*C0/1 2 B B B B M M 7PG1111-2*D1 3 B B M B 7PG1111-2*E1 4 B B B B Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact Siemens Protection Devices Limited Chapter 2 Page 18 of 48

35 AR Auxiliary Relay PG1111-2**3 (AR112 6 contact) 7PG1111-2**5 (AR112 8 contact) Figure 2-10 Functional Diagram: 7PG1111-2**3 and 7PG1111-2**5 Table 2-10 Contact Terminal Numbers (AR112) (6 contact and 8 contact) Relay Type 7PG1111-2*A3/5 7PG1111-2*B3/5 7PG1111-2*C3/5 7PG1111-2*D3/5 7PG1111-2*E3/5 7PG1111-2*F3/5 7PG1111-2*G3/5 7PG1111-2*H5 7PG1111-2*J5 Relay Type AR 112 (6 Contact) Terminal Numbers (8 Contact) Terminal Numbers (Max Number of B contacts) 22 0 M M M M M M M M M M M M M M 1 M B M M M M M M M M M B M M 2 B B M M M M M B M M M B M M 3 B B M B M M M B M M B B M M 4 B B B B M M B B M M B B M M 5 B B B B M B B B M M B B M B 6 B B B B B B B B M B B B M B 7 B B M B B B B B 8 B B M B B B B B Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact. Note: Contact pairing 5-7 on the 7PG1111-2**5 is always a make contact, it is therefore shown this way on Figure PG1111-2***0-0A*1 (AR112D) This relay has the option of a back EMF suppression diode, available only when the Voltage rating (Vn) is DC. The diagram below shows how the operation coil (RL1) is protected by the diode and a varistor. Example of the back EMF supression diode. Siemens 2013 Siemens Protection Devices Limited Chapter 2 Page 19 of 48

36 AR Auxiliary Relay 2.6 7PG1111-2***4 (AR112SB) This Auxiliary Relay can be specified with 1, 3, 5 or 7 user available contacts. The Relay can be powered from either a DC or AC supply. For AC applications the supply to the operating coil is converted to DC by a full bridge rectifier (see Figure 2-11 and Figure 2-12). The contacts are held in the operate position by a mechanical latch. The relay is reset by pressing a lever on the front of the relay. Operation of Protection Relay (PR) contact causes RL1 to operate. The operation of RL1 causes SB (Series Break) contact to open therefore removing the supply to RL1 and reducing its burden to zero. The flag on the front of the relay is reset by hand. This relay is also available with 2 elements therefore doubling the number of user available contacts, the 7PG11212***4 (AR 212SB) is supplied with 2, 6 or 10 user available contacts. The MLFB code quotes the total number of contacts i.e. 2, 4, 6 or 8 contacts, this is correct but there are 1, 3, 5 or 7 user available contacts, the extra contact is used as the SB (Series Break). The MLFB code quotes 2, 4, or 6 contacts per element (4, 8, or 12 in total) providing 1, 3, or 5 contacts per element (2, 6 or 10 in total) user available contacts, the extra contact pairings are used as the SB (Series Break) in each element PG1111-2**0 (AR112 2 contact (1 User available contact)) 7PG1111-2**1 (AR112 4 contact (3 User available contacts)) Figure 2-11 Functional Diagram: 7PG1111-2**04 and 7PG1111-2**14 Table 2-11 Contact Terminal Numbers (AR112SB) (2 contact and 4 contact) Relay Type AR 112SB (Max Terminal Numbers Relay Type Number of B contacts) (2 Contact) (4 Contact) PG1111-2*A04/14 0 SB M SB M M M 7PG1111-2*B04/14 1 SB B SB B M M 7PG1111-2*C14 2 SB B M B 7PG1111-2*D14 3 SB B B B Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact Siemens Protection Devices Limited Chapter 2 Page 20 of 48

37 AR Auxiliary Relay PG1111-2**3 (AR112 6 contact (5 User available contacts)) 7PG1111-2**5 (AR112 8 contact (7 User available contacts)) Figure 2-12 Functional Diagram: 7PG1111-2**34 and 7PG1111-2**54 Table 2-12 Contact Terminal Numbers (AR112SB) (6 contact and 8 contact) Relay Type 7PG1111-2*A34/54 7PG1111-2*B34/54 7PG1111-2*C34/54 7PG1111-2*D34/54 7PG1111-2*E34/54 7PG1111-2*F34/54 7PG1111-2*G54 7PG1111-2*H54 Relay Type AR 112 (Max Number of B contacts) (6 Contact) Terminal Numbers (8 Contact) Terminal Numbers SB M M M M M SB M M M M M M M 1 SB B M M M M SB M M M M B M M 2 SB B M B M M SB B M M M B M M 3 SB B B B M M SB B M M B B M M 4 SB B B B M B SB B M M B B M B 5 SB B B B B B SB B M B B B M B 6 SB B M B B B B B 7 SB B B B B B B B Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact. Note: Contact pairing 5-7 on the 7PG1110-1**5 is always a make contact, it is therefore shown this way on Figure PG1111-2***4-0A*1 (AR112 SB D) This relay has the option of a back EMF suppression diode, available only when the Voltage rating (Vn) is DC. The diagram below shows how the operation coil (RL1) is protected by the diode and a varistor. Example of the back EMF supression diode. Siemens 2013 Siemens Protection Devices Limited Chapter 2 Page 21 of 48

38 AR Auxiliary Relay 2.7 7PG (AR113) This Auxiliary Relay can be specified with 4, 6 or 8 user available contacts. The Relay can be powered from either a DC or AC supply. For AC applications the supply to the operating coil and reset coil is converted to DC by a full bridge rectifier (This configuration is shown in Figure 2-13 and Figure 2-14). The relay is operated by the protection contact PR. The relay can be reset either by hand or electrically by operating the reset solenoid. The flag on the front of the relay is reset by hand PG1111-3**0 (AR113 4 contacts) 7PG1111-3**1 (AR113 6 contacts) Figure 2-13 Functional Diagram: 7PG1111-3**1 and 7PG1111-3**3 Table 2-13 Contact Terminal Numbers (AR113) (4 contact and 6 contact) Relay Type Relay Type AR 113 (Max Number of B contacts) (4 Contact) (6 Contact) PG1111-3*A1/3 0 M M M M M M M M M M 7PG1111-3*B1/3 1 M B M M M B M M M M 7PG1111-3*C1/3 2 B B M M B B M M M M 7PG1111-3*D1/3 3 B B M B B B M B M M 7PG1111-3*E1/3 4 B B B B B B B B M M 7PG1111-3*E3 5 B B B B M B 7PG1111-3*E3 6 B B B B B B Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact Siemens Protection Devices Limited Chapter 2 Page 22 of 48

39 AR Auxiliary Relay PG1111-3**5 (AR113 8 contacts) PG (AR 113) 8 Contact PR +ve 13 RL1 +ve R1 RESET SOLENOID -ve 14 -ve RL1 RESET SOLENOID R AC Applications Only Figure 2-14 Functional Diagram: 7PG1111-3**5 Table 2-14 Contact Terminal Numbers (AR113) (8 contact) Relay Type 7PG1111-3*A5 7PG1111-3*B5 7PG1111-3*C5 7PG1111-3*D5 7PG1111-3*E5 7PG1111-3*F5 7PG1111-3*G5 7PG1111-3*H5 7PG1111-3*J5 Relay Type AR 113 (Max Number of B contacts) (8 Contact) Terminal Numbers M M M M M M M M 1 M M M M M B M M 2 M B M M M B M M 3 M B M M B B M M 4 B B M M B B M M 5 B B M M B B M B 6 B B M B B B M B 7 B B M B B B B B 8 B B M B B B B B Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact. Note: Contact pairing 5-7 on the 7PG1111-3**5 is always a make contact, it is therefore shown this way on Figure PG1111-3***0-0A*1 (AR113D) This relay has the option of a back EMF suppression diode, available only when the Voltage rating (Vn) is DC. The diagram below shows how the operation coil (RL1) is protected by the diode and a varistor. Example of the back EMF supression diode. Siemens 2013 Siemens Protection Devices Limited Chapter 2 Page 23 of 48

40 AR Auxiliary Relay 2.8 7PG (AR114) This Auxiliary Relay can be specified with 4 or 6 user available contacts. The Relay can be powered from either a DC or AC supply. For AC applications the supply to the operating coil is converted to DC by a full bridge rectifier (This configuration is shown in Figure 2-15 and Figure 2-16). The relay is normally energised. The relay operates when RL1 is de-energised, the SR (self reset) contacts are held in the operate position until RL1 is energised, after this they return to there normal position. The HR (hand reset) contacts are held in the operate position while RL1 is energised, after this they are held in the operated position by a mechanical latch which is released by a reset mechanism on the front of the relay. The flag on the front of the relay is reset by hand PG1111-4**1 (AR114 4 contact) Figure 2-15 Functional Diagram: 7PG1111-4**1 Table 2-15 Contact Terminal Numbers (AR114) (4 contact) Contact Configuration Relay Type HR SR PG1111-4CC12 2M 2M M M M M 7PG1111-4CC12 2M 1M 1B M B M M 7PG1111-4CC12 2M 2B B B M M 7PG1111-4CC11 2B 2M M M B B 7PG1111-4CC11 2B 1M 1B M B B B 7PG1111-4CC11 2B 2B B B B B Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact. SR, Self Reset contacts HR, Hand Reset contacts Siemens Protection Devices Limited Chapter 2 Page 24 of 48

41 AR Auxiliary Relay PG1111-4**3 (AR114 6 contact) Figure 2-16 Functional Diagram: 7PG1111-4**3 Table 2-16 Contact Terminal Numbers (AR114) (6 contact) Contact Configuration Relay Type HR SR PG1111-4GA32 2M 4M M M M M M M 7PG1111-4FB32 2M 3M 1B M B M M M M 7PG1111-4EC32 2M 2M 2B B B M M M M 7PG1111-4EC32 2M 1M 3B B B M B M M 7PG1111-4CE32 2M 4B B B B B M M 7PG1111-4FB33 1M 1B 4M M M M M B M 7PG1111-4DD33 1M 1B 2M 2B B B M M B B 7PG1111-4EC31 2B 4M M M M M B B 7PG1111-4DD31 2B 3M 1B M B M M B B 7PG1111-4CE31 2B 2M 2B B B M M B B 7PG1111-4BF31 2B 1M 3B B B M B B B 7PG1111-4AG31 2B 4B B B B B B B Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact. SR, Self Reset contacts HR, Hand Reset contacts PG1111-4****-0A*1 (AR114D) This relay has the option of a back EMF suppression diode, available only when the Voltage rating (Vn) is DC. The diagram below shows how the operation coil (RL1) is protected by the diode and a varistor. Example of the back EMF supression diode. Siemens 2013 Siemens Protection Devices Limited Chapter 2 Page 25 of 48

42 AR Auxiliary Relay 2.9 7PG (AR121) This Auxiliary Relay can be specified with 2, 4, 6 or 8 user available contacts. The Relay can be powered from either a DC or AC supply. For AC applications the supply to the operating coil is converted to DC by a full bridge rectifier (This configuration is shown in Figure 2-17 and Figure 2-18). The relay is normally energised. The relay operates when RL1 is de-energised. When the relay is energised the contacts return to there normal position. This is the relay operating as a self reset. The flag on the front of the relay is reset by hand and is reverse acting (indicates that RL1 Is de-energised). This relay is also available with 2 elements therefore doubling the number of user available contacts, the 7PG11201 (AR 201) is supplied with 4, 8 or 12 user available contacts. This relay is also available with a delay on de-energisation, 7PG1112-1***0-**** (AR121T) / 7PG1122-1***0-**** (AR 221T). The AR 121T relay can be specified with 2, 4 or 6 user available contacts. The AR 221T relay can be specified with 4, 8 or 12 user available contacts. The AR 121T / AR 221T can only be powered from a DC supply PG1112-1**0 (AR121 2 contact) 7PG1112-1**1 (AR121 4 contact) Figure 2-17 Functional Diagram: 7PG1112-1**0 and 7PG1112-1**1 Table 2-17 Contact Terminal Numbers (AR121) (2 contact and 4 contact) Relay Type AR 121 (Max Terminal Numbers Relay Type Number of B contacts) (2 Contact) (4 Contact) PG1112-1*A0/1 0 M M M M M M 7PG1112-1*B0/1 1 M B M B M M 7PG1112-1*C0/1 2 B B B B M M 7PG1112-1*D1 3 B B M B 7PG1112-1*E1 4 B B B B Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact Siemens Protection Devices Limited Chapter 2 Page 26 of 48

43 AR Auxiliary Relay PG1112-1**3 (AR121 6 contact) 7PG1112-1**5 (AR121 8 contact) Figure 2-18 Functional Diagram: 7PG1112-1**3 and 7PG1112-1**5 Table 2-18 Contact Terminal Numbers (AR121) (6 contact and 8 contact) Relay Type 7PG1112-1*A3/5 7PG1112-1*B3/5 7PG1112-1*C3/5 7PG1112-1*D3/5 7PG1112-1*E3/5 7PG1112-1*F3/5 7PG1112-1*G3/5 7PG1112-1*H5 7PG1112-1*J5 Relay Type AR 121 (6 Contact) Terminal Numbers (8 Contact) Terminal Numbers (Max Number of B contacts) 22 0 M M M M M M M M M M M M M M 1 M B M M M M M M M M M B M M 2 B B M M M M M B M M M B M M 3 B B M B M M M B M M B B M M 4 B B B B M M B B M M B B M M 5 B B B B M B B B M M B B M B 6 B B B B B B B B M B B B M B 7 B B M B B B B B 8 B B M B B B B B Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact. Note: Contact pairing 5-7 on the 7PG1112-1**5 is always a make contact, it is therefore shown this way on Figure PG1112-1***0-0A*1 (AR121D) This relay has the option of a back EMF suppression diode, available only when the Voltage rating (Vn) is DC. The diagram below shows how the operation coil (RL1) is protected by the diode and a varistor. Example of the back EMF supression diode. Siemens 2013 Siemens Protection Devices Limited Chapter 2 Page 27 of 48

44 AR Auxiliary Relay PG (AR124) This Auxiliary Relay can be specified with 4 or 6 user available contacts. The Relay can be powered from either a DC or AC supply. For AC applications the supply to the operating coil is converted to DC by a full bridge rectifier (This configuration is shown in Figure 2-19 and Figure 2-20). The relay is normally energised. The relay operates when RL1 is de-energised, the SR (self reset) contacts are held in the operate position until RL1 resets (is energised), after this they return to there normal position. The HR (hand reset) contacts are held in the operate position while RL1 is un-energised. If the relay Rests (is energised) the hand reset contacts remain in the operate state. The hand reset contacts are reset by the flag mechanism on the front of the relay. The flag on the front of the relay is reset by hand and is reverse acting (indicates that RL1 has de-energised (operated)) PG1112-4**1 (AR124 4 contact) Figure 2-19 Functional Diagram: 7PG1112-4**1 Table 2-19 Contact Terminal Numbers (AR124) (4 Contact) Contact Configuration Relay Type HR SR PG1112-4CC12 2M 2M M M M M 7PG1112-4CC12 2M 1M 1B M B M M 7PG1112-4CC12 2M 2B B B M M 7PG1112-4CC11 2B 2M M M B B 7PG1112-4CC11 2B 1M 1B M B B B 7PG1112-4CC11 2B 2B B B B B Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact. SR, Self Reset contacts HR, Hand Reset contacts Siemens Protection Devices Limited Chapter 2 Page 28 of 48

45 AR Auxiliary Relay PG1112-4**3 (AR124 6 contact) Figure 2-20 Functional Diagram: 7PG1112-4**3 Table 2-20 Contact Terminal Numbers (AR124) (6 Contact) Contact Configuration Relay Type HR SR PG1112-4GA32 2M 4M M M M M M M 7PG1112-4FB32 2M 3M 1B M B M M M M 7PG1112-4EC32 2M 2M 2B B B M M M M 7PG1112-4EC32 2M 1M 3B B B M B M M 7PG1112-4CE32 2M 4B B B B B M M 7PG1112-4FB33 1M 1B 4M M M M M B M 7PG1112-4DD33 1M 1B 2M 2B B B M M B B 7PG1112-4EC31 2B 4M M M M M B B 7PG1112-4DD31 2B 3M 1B M B M M B B 7PG1112-4CE31 2B 2M 2B B B M M B B 7PG1112-4BF31 2B 1M 3B B B M B B B 7PG1112-4AG31 2B 4B B B B B B B Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact. SR, Self Reset contacts HR, Hand Reset contacts PG1112-4****-0A*1 (AR124D) This relay has the option of a back EMF suppression diode, available only when the Voltage rating (Vn) is DC. The diagram below shows how the operation coil (RL1) is protected by the diode and a varistor. Example of the back EMF supression diode. Siemens 2013 Siemens Protection Devices Limited Chapter 2 Page 29 of 48

46 AR Auxiliary Relay PG (AR131) This Auxiliary Relay can be specified with 2, 4, 6 or 8 user available contacts. The Relay can be powered from either a DC or AC supply. For AC applications the supply to the operating coil is converted to DC by a full bridge rectifier (This configuration is shown in Figure 2-21and Figure 2-22). The relay is operated by the protection contact PR. The contacts are held in the operate position until RL1 is deenergised, after this they return to there normal position. This is the relay operating as a self reset. The flag on the front of the relay is self reset. This relay is also available with 2 elements therefore doubling the number of user available contacts, the 7PG11231 (AR 231) is supplied with 4 or 8 user available contacts. This relay is also available with a delay on de-energisation, 7PG1113-1aan0-nAan (AR131T) / 7PG1123-1***0- *A** (AR231T). The AR 131T relay can be specified with 2 or 4 user available contacts. The AR 231T relay can be specified with 4 or 8 user available contacts. The AR 131 / AR 231 can only be powered from a DC supply PG1113-1**0 (AR131 2 contact) 7PG1113-1**1 (AR131 4 contact) Figure 2-21 Functional Diagram: 7PG1113-1**0 and 7PG1113-1**1 Table 2-21 Contact Terminal Numbers (AR131) (2 contact and 4 contact) Relay Type AR 131 (Max Terminal Numbers Relay Type Number of B contacts) (2 Contact) (4 Contact) PG1113-1*A0/1 0 M M M M M M 7PG1113-1*B0/1 1 M B M B M M 7PG1113-1*C0/1 2 B B B B M M 7PG1113-1*D1 3 B B M B 7PG1113-1*E1 4 B B B B Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact Siemens Protection Devices Limited Chapter 2 Page 30 of 48

47 AR Auxiliary Relay PG1113-1**3 (AR131 6 contact) Figure 2-22 Functional Diagram: 7PG1113-1**3 Table 2-22 Contact Terminal Numbers (AR131) (6 contact) Relay Type Relay Type AR 131 (Max Number of B (6 Contact) Terminal Numbers contacts) PG1113-1*A3 0 M M M M M M 7PG1113-1*B3 1 M B M M M M 7PG1113-1*C3 2 B B M M M M 7PG1113-1*D3 3 B B M B M M 7PG1113-1*E3 4 B B B B M M 7PG1113-1*F3 5 B B B B M B 7PG1113-1*G3 6 B B B B B B Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact PG1113-1***0-0A*1 (AR131D) This relay has the option of a back EMF suppression diode, available only when the Voltage rating (Vn) is DC. The diagram below shows how the operation coil (RL1) is protected by the diode and a varistor. Example of the back EMF supression diode. Siemens 2013 Siemens Protection Devices Limited Chapter 2 Page 31 of 48

48 AR Auxiliary Relay PG (AR133) This Auxiliary Relay can be specified with 2, 4, 6 or 7 user available contacts. The Relay can be powered from either a DC or AC supply. For AC applications the supply to the operating coil is converted to DC by a full bridge rectifier (This configuration is shown in Figure 2-23 and Figure 2-24). The relay is operated by the protection contact PR. The Operation of RL1 causes RL1-A to close, therefore allowing the reset solenoid to be operated if the supply voltage is applied between pin 27 and pin 28. The relay can also be reset by hand. The flag on the front of the relay is self reset PG1113-3**0 (AR133 2 contact) 7PG1113-3**1 (AR133 4 contact) Figure 2-23 Functional Diagram: 7PG1113-3**0 and 7PG1113-3**1 Table 2-23 Contact Terminal Numbers (AR133) (2 contact and 4 contact) Relay Type AR 133 (Max Terminal Numbers Relay Type Number of B contacts) (2 Contact) (4 Contact) PG1113-3*A0/1 0 M M M M M M 7PG1113-3*B0/1 1 M B M B M M 7PG1113-3*C0/1 2 B B B B M M 7PG1113-3*D1 3 B B M B 7PG1113-3*E1 4 B B B B Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact Siemens Protection Devices Limited Chapter 2 Page 32 of 48

49 AR Auxiliary Relay PG1113-3**3 (AR133 6 contact) 7PG1113-3**5 (AR133 8 contact (7 User available contacts)) Figure 2-24 Functional Diagram: 7PG1113-3**3 and 7PG1113-3**5 Table 2-24 Contact Terminal Numbers (AR133) (6 contact and 8 contact) Relay Type 7PG1113-3*A3/5 7PG1113-3*B3/5 7PG1113-3*C3/5 7PG1113-3*D3/5 7PG1113-3*E3/5 7PG1113-3*F3/5 7PG1113-3*G3/5 7PG1113-3*H5 Relay Type AR 133 (Max Number of B contacts) (6 Contact) Terminal Numbers (8 Contact) Terminal Numbers M M M M M M M M M M M M M 1 M B M M M M M M M M M B M 2 B B M M M M M B M M M B M 3 B B M B M M M B M M B B M 4 B B B B M M B B M M B B M 5 B B B B M B B B M M B B B 6 B B B B B B B B M B B B B 7 B B B B B B B Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact PG1113-3***0-0A*1 (AR133D) This relay has the option of a back EMF suppression diode, available only when the Voltage rating (Vn) is DC. The diagram below shows how the operation coil (RL1) is protected by the diode and a varistor. Example of the back EMF supression diode. Siemens 2013 Siemens Protection Devices Limited Chapter 2 Page 33 of 48

50 AR Auxiliary Relay PG (AR136) This Auxiliary Relay can be specified with 2, 4 or 6 user available contacts. The Relay can be powered from either a DC or AC supply. For AC applications the supply to the operating coil and reset coil is converted to DC by a full bridge rectifier (This configuration is shown in Figure 2-25 and Figure 2-26). The relay is operated by the protection contact PR. The relay is reset electrically by operating the reset solenoid. The relay has the option of a back EMF suppression diode available for the 6 contact relay only when the Voltage rating (Vn) is DC. The flag on the front of the relay is self reset PG1113-6**0 (AR136 2 contact) 7PG1113-6**1 (AR136 4 contact) Figure 2-25 Functional Diagram: 7PG1113-6**0 and 7PG1113-6**1 Table 2-25 Contact Terminal Numbers (AR136) (2 contact and 4 contact) Relay Type AR 136 (Max Number Terminal Numbers Relay Type of B contacts) (2 Contact) (4 Contact) PG1113-6*A0/1 0 M M M M M M 7PG1113-6*B0/1 1 M B M B M M 7PG1113-6*C0/1 2 B B B B M M 7PG1113-6*D0/1 3 B B M B 7PG1113-6*E0/1 4 B B B B Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact Siemens Protection Devices Limited Chapter 2 Page 34 of 48

51 AR Auxiliary Relay PG1113-6**3 (AR136 6 contact) Figure 2-26 Functional Diagram: 7PG1113-6**3 Table 2-26 Contact Terminal Numbers (AR136) (6 contact) Relay Type Relay Type AR 136 (Max Number of B (6 Contact) Terminal Numbers contacts) PG1113-6*A3 0 M M M M M M 7PG1113-6*B3 1 M B M M M M 7PG1113-6*C3 2 B B M M M M 7PG1113-6*D3 3 B B M B M M 7PG1113-6*E3 4 B B B B M M 7PG1113-6*F3 5 B B B B M B 7PG1113-6*G3 6 B B B B B B Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact PG1113-6***0-0A*1 (AR136D) This relay has the option of a back EMF suppression diode, available only when the Voltage rating (Vn) is DC. The diagram below shows how the operation coil (RL1) is protected by the diode and a varistor. Example of the back EMF supression diode. Siemens 2013 Siemens Protection Devices Limited Chapter 2 Page 35 of 48

52 AR Auxiliary Relay PG (AR141) This Auxiliary Relay can be specified with 2, 4, 6 or 8 user available contacts. The Relay can be powered from either a DC or AC supply. For AC applications the supply to the operating coil is converted to DC by a full bridge rectifier (This configuration is shown in Figure 2-27 and Figure 2-28). The relay is operated by the protection contact PR. The contacts are held in the operate position until RL1 is deenergised, after this they return to there normal position. This is the relay operating as a self reset. The flag on the front of the relay is self reset. This relay is also available with 2 elements therefore doubling the number of user available contacts, the 7PG11241 (AR 241) is supplied with 4 or 8 user available contacts. This relay is also available with a delay on de-energisation, 7PG1114-1***0-*A** (AR 141T) / 7PG1124-1***0-*A** (AR 241T). The AR 141 relay can be specified with 2 or 4 user available contacts. The AR 241 relay can be specified with 4 or 8 user available contacts. The AR 141T / 241T can only be powered from a DC supply PG1114-1**0 (AR141 2 contact) 7PG1114-1**1 (AR141 4 contact) Figure 2-27 Functional Diagram: 7PG1114-1**0 and 7PG1114-1**1 Table 2-27 Contact Terminal Numbers (AR141) (2 contact and 4 contact) Relay Type AR 141 (Max Terminal Numbers Relay Type Number of B contacts) (2 Contact) (4 Contact) PG1114-1*A0/1 0 M M M M M M 7PG1114-1*B0/1 1 M B M B M M 7PG1114-1*C0/1 2 B B B B M M 7PG1114-1*D1 3 B B M B 7PG1114-1*E1 4 B B B B Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact Siemens Protection Devices Limited Chapter 2 Page 36 of 48

53 AR Auxiliary Relay PG1114-1**3 (AR141 6 contact) Figure 2-28 Functional Diagram: 7PG1114-1**3 Table 2-28 Contact Terminal Numbers (AR141) (6 contact) Relay Type Relay Type AR 141 (Max Number of B (6 Contact) Terminal Numbers contacts) PG1114-1*A3 0 M M M M M M 7PG1114-1*B3 1 M B M M M M 7PG1114-1*C3 2 B B M M M M 7PG1114-1*D3 3 B B M B M M 7PG1114-1*E3 4 B B B B M M 7PG1114-1*F3 5 B B B B M B 7PG1114-1*G3 6 B B B B B B Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact PG1114-1***0-0A*1 (AR141D) This relay has the option of a back EMF suppression diode, available only when the Voltage rating (Vn) is DC. The diagram below shows how the operation coil (RL1) is protected by the diode and a varistor. Example of the back EMF supression diode. Siemens 2013 Siemens Protection Devices Limited Chapter 2 Page 37 of 48

54 AR Auxiliary Relay PG1110-7AE10-0A*0 (AR 901) This Auxiliary Relay has 4 user available contacts, it has been designed for a specific function to be used in conjunction with the 7SR23 DAD relay to act as a CT shorting Relay. The Relay is powered from a DC supply. After initial operation of RL1 due to the closing of the PR the supply to RL1 is cut by the break contact RL1-A. The output contacts break and are held in this position by a mechanical latch. This is the normal state of the relay and contacts. Energisation of the Reset solenoid causes the relay to operate and the output contacts to make (short out connected CTs). An applications diagram and explanation can be found in Applications 6.3. The relay is reset electrically by operating RL1. There is no flag indicator on the front of the relay PG1110-7AE10-0A*0 (AR 901) Figure 2-29 Functional Diagram: 7PG1110-7AE10-0A*0 Table 2-29 Contact Terminal Numbers (AR901) AR 901 Number of B contacts Terminal Numbers Relay Type PG1110-7AE10-0A*0 4 B B B B Note: The unconventional contact numbering. Abbreviations: B (Break), location of normally closed contact Siemens Protection Devices Limited Chapter 2 Page 38 of 48

55 AR Auxiliary Relay 3 Performance Specification Technical Information Rated Voltage Vn (AC) Rated Voltage Vn (AC) 63.5 V 110 V 220 V 240 V Operating range 80% to 110% of Vn Rated Voltage Vn (DC) Rated Voltage Vn (DC) 12 V 24 V 30 V 50 V 125 V 240 V Operating range 70% to 115% of Vn Nominal Burdens AR relays have a nominal burden of 3 to 5 W/VA depending upon rating. Rectified A.C. relays nominal power factor = Contacts Attribute Make and Carry continuously Make and carry for 3 seconds Break Minimum recommended load Minimum number of operations Value 1250VAa.c. or 1250Wd.c. within limits of 660V and 5A 7500VAa.c. or 7500Wd.c. within limits of 660V and 30A 1250VAa.c. or 100W (resistive) d.c. or 50W (inductive) d.c. within limits of 250V and 5A 0.5 Watt limits 10mA or 5V 10,000 operations, within the maximum contact loading specified. Siemens 2013 Siemens Protection Devices Limited Chapter 2 Page 39 of 48

56 AR Auxiliary Relay 3.2 Environmental Temperature IEC68-2-1/2 and BS2011(1977) Humidity IEC Vibration Shock and bump Operating -10 C to +55 C 56 days at 95% RH and 40 C IEC Class l. IEC and BS142, (1989) Storage -25 C to +70 C Relays meet the requirements with respect to shock and bump testing for Class 1 severity. 3.3 Insulation IEC RMS levels for 1 minute Between Contacts to earth and to the coil Between any case terminal and earth Between case terminals of independent circuits Across normally open contacts 2.0KV 2.0KV 2.0KV 1.0KV 3.4 Transient Overvoltage IEC Between all terminals and earth or between any two independent circuits without damage or flashover. 5 Kv 1.2/50 s 0.5J 2013 Siemens Protection Devices Limited Chapter 2 Page 40 of 48

57 AR Auxiliary Relay 4 Installation 4.1 Unpacking, Storage and Handling On receipt remove the relay from the container in which it was received and inspect it for obvious damage. It is recommended that the relay not be removed from its case. If damage has been sustained a claim should be immediately be made against the carrier, also inform Siemens Protection Devices Limited, and the nearest Siemens agent. When not required for immediate use, the relay should be returned to its original carton and stored in a clean, dry place. The relay contains static sensitive devices, which are susceptible to damage due to static discharge. The relay s electronic circuits are protected from damage by static discharge when the relay is housed in its case. There can be no requirement to disassemble any relay, since there are no user serviceable parts in the relay. If any modules have been tampered with, then the guarantee will be invalidated. Siemens Protection Devices Limited reserves the right to charge for any subsequent repairs. 4.2 Wiring The product should be wired according to the scheme requirements, with reference to the appropriate wiring diagram. 4.3 Front Cover The front cover provides additional securing of the relay element within the case. The relay cover should be in place during normal operating conditions. 4.4 Fixings Crimps Ring tongued crimps with 90 bend are recommended Panel Fixings Typical mounting screw kit per Relay consists of: 4 M4x10mm Screws 4 M4 Nuts 4 M4 Lock Washers Typical rear terminal block fixing kit (1kit per terminal block fitted to relay) Consists of: 28 M4, 8mm Screws 28 M4 Lock Washer Siemens 2013 Siemens Protection Devices Limited Chapter 2 Page 41 of 48

58 AR Auxiliary Relay 4.5 Relay Dimensions and Panel Fixings Relays are supplied in either the E2 or E4 epsilon cases E2 Case Dimensions mm 13.5 mm 150 mm 44 mm 51.5 mm 150 mm mm 177 mm Side view of E2 case Front view of E2 case Front view of E2 front cover Side view of E2 case with front cover attached E2 Terminal Numbering Viewed from Rear 2013 Siemens Protection Devices Limited Chapter 2 Page 42 of 48

59 AR Auxiliary Relay E4 Case Dimensions mm 13.5 mm 150 mm 96 mm mm 150 mm mm 177 mm Side view of E4 case Front view of E4 case Front view of E4 front cover RH-element LH-element Side view of E4 case with front cover attached E4 Terminal Numbering Viewed from Rear Siemens 2013 Siemens Protection Devices Limited Chapter 2 Page 43 of 48

60 AR Auxiliary Relay 5 Maintenance 5.1 Safety The commissioning and future maintenance of this equipment should only be carried out by skilled personnel trained in protective relay operation and capable of observing all the necessary safety precautions and regulations appropriate to this equipment and also the associated primary plant. Equipment should be isolated from auxiliary supplies and the circuit breaker trip circuit prior to commencing any work on an installed product. 5.2 Unpacking, Handling and Storage On receipt unpack the relay and inspect for any obvious damage. If damage has been sustained a claim should immediately be made against the carrier, also inform Siemens and the nearest Siemens agent. When not immediately required, return the relay to it s carton and store in a clean, dry place. 5.3 Preliminary Tests Check that the relay operating voltage (and reset voltage if a reset coil is fitted) are correct for the auxiliary voltage to be used. In some instances relays are to be used with the coil in a series with a voltage dropper resistor, this is advised on the Order Acknowledgement and shown on the relay label as +Ext R, suitable resistors are supplied with the relay, ensure that such resistors are mounted vertical, and secure and wired to the correct relay coil. Isolate from the auxiliary supply(s) by removing fuses and line as necessary. Physically check the wiring to the relay terminals for security and prove that it is wired correctly to the circuit schematic wiring diagrams. 5.4 Mechanical Settings It should not be necessary to adjust settings during routine tests unless parts have been replaced or other repairs carried out. Adjustment of one setting will often influence another, therefore all settings must be checked after the final adjustment. 5.5 Contacts Contact tips are fine silver on copper and should only be burnished if any pitting has occurred. Contact pressures are set by gentle pressure with contact setting pliers near to the contact stack assembly, during this operation avoid putting any stress on the contact actuating comb. Contact pressures should be measured using an accurate gram gauge at the tip of the contact leaf Siemens Protection Devices Limited Chapter 2 Page 44 of 48

61 AR Auxiliary Relay 6 Applications 6.1 AR 101 Trip Relay Auto Reset interlocking Relay Figure 6-1 Applications Diagram: 7PG (AR 101) Figure 6-1 shows the AR 101 used as a Trip Relay Auxiliary Relay in a Trip Relay Auto Reset Scheme. The AR 101 is a self reset relay; Figure 6-1 shows the scheme in it de-energised state, the AR101 is a normally deenergised relay. The operation of the Protection Relay contact will cause the Protection Trip Relay to operate and latch. The AR101 Relay will also operate for as long as the Protection Relay remains operated, when the fault has been cleared the Protection will reset, allowing this AR101 to reset and complete the connection to the Trip Relay Reset Coil. Once the associated timer has expired (TD10 when the line isolator is closed, TD120 when the line isolator is open) the trip relay will be reset. If the operation of the Trip Relay (and circuit breaker) fails to clear the fault, the protection remains operated, the AR101 energised and the TR Reset Coil is isolated from the timer outputs. This prevents the resetting of the Trip Relay until the fault is cleared. Siemens 2013 Siemens Protection Devices Limited Chapter 2 Page 45 of 48

62 AR Auxiliary Relay 6.2 AR 111 Intertrip Receive Trip Relay Auto Reset scheme Figure 6-2 Applications Diagram: 7PG (AR 111) Figure 6-2 shows the AR 111 used as a Trip Relay Auxiliary Relay in a Trip Relay Auto Reset Scheme. The AR 111 is a self reset relay; Figure 6-2 shows the scheme in it de-energised state, the AR111 is a normally deenergised relay. The AR 111 is used in this application instead of the AR 101 because of its flag indicator. A Flag is required to show an Intertrip signal is still being received from the remote end of the scheme and therefore the Intertrip Receive Trip Relay (TR231) can t be reset. The operation of the intertripping unit will cause the Intertrip Receive Trip Relay to operate and latch. The AR111 Relay will also operate for as long as the Intertrip Receive Trip Relay remains operated, when the fault has been cleared the intertripping unit will reset, allowing this AR111 to reset and complete the connection to the Trip Relay Reset Coil. Once the associated timer has expired (TD10 when the line isolator is closed, TD120 when the line isolator is open) the trip relay will be reset. If the operation of the Trip Relay (and circuit breaker) fails to clear the fault, the protection remains operated, the AR111 energised and the TR Reset Coil is isolated from the timer outputs. This prevents the resetting of the Trip Relay until the fault is cleared Siemens Protection Devices Limited Chapter 2 Page 46 of 48

63 AR Auxiliary Relay 6.3 AR 901 Current Transformer Shorting Relay Scheme Figure 6-3 Applications Diagram: 7PG (AR 901) Figure 6-3 shows the AR 901 in a CT Shorting scheme. Figure 6-3 shows the AR 901 and its associated contacts in there un-energised state. The AR 901 is electrically reset. When the protection healthy is on and the zone switch out is off, RL1 is energised causing the output contacts of the AR 901 to break meaning the current transformers are in service (not shorted) the output contacts are held in this position by a mechanical latch. The supply to RL1 breaks (RL1-A breaks) and a path from the protection relay to the reset coil of the AR 901 is made (RL1-B makes). (This is the AR 901 in its normal state). If the zone switch out changes state to on and the protection healthy remains on the reset coil will be operated, this will cause the output contacts to make (Short the CT). The supply to the reset coil is then cut by RL1-B breaking. The connection from the protection relay to RL1, is made By RL1-A making. (This is the AR 901 operating). The relay will also operate if the protection healthy changes state to off (after RL1 has been energised). Siemens 2013 Siemens Protection Devices Limited Chapter 2 Page 47 of 48

64 AR Auxiliary Relay 2013 Siemens Protection Devices Limited Chapter 2 Page 48 of 48

65 MR Measuring Relay 7PG13 MR Relays Measuring Relay Document Release History This document is issue The list of revisions up to and including this issue is: 2013 First Issue Siemens Siemens Protection Devices Limited Chapter 3 Page 1 of 14

66 MR Measuring Relay Contents 1 Introduction Contact Reset: Self Reset Description of Operation PG (MR101) PG1310-1**0 (MR101 2 contact) 7PG1310-1**1 (MR101 4 contact) PG (MR111) PG1311-1**0 (MR111 2 contact) 7PG1311-1**1 (MR111 4 contact) PG (MR102) PG1310-2**0 (MR102 2 contact) 7PG **1 (MR102 4 contact) PG (MR112) PG1311-2**0 (MR112 2 contact) 7PG **1 (MR112 4 contact) Performance Specification...10 Technical Information Contacts Indication Environmental Insulation Installation Unpacking, Storage and Handling Wiring Front Cover Fixings Crimps Panel Fixings Relay Dimensions and Panel Fixings E2 Case Dimensions Maintenance Safety Preliminary Tests Mechanical Settings Contacts Applications MR AC Measuring Relay...14 Figure 6-1 Applications Diagram: MR AC Measuring Relay...14 List of Figures Figure 2-1 Functional Diagram: 7PG1310-1aa0 and 7PG1310-1aa1...6 Figure 2-2 Functional Diagram: 7PG1311-1aa0 and 7PG1311-1aa1...7 Figure 2-3 Functional Diagram: 7PG1310-2aa0 and 7PG1310-2aa1...8 Figure 2-3 Functional Diagram: 7PG1311-2aa0 and 7PG1311-2aa1...9 Figure 6-1 Applications Diagram: MR AC Measuring Relay Siemens Protection Devices Limited Chapter 3 Page 2 of 14

67 MR Measuring Relay List of Tables Table 1-1 Numbering of Relay Features...4 Table 1-2 Relay Features...5 Table 2-1 Contact Terminal Numbers (MR101)...6 Table 2-2 Contact Terminal Numbers (MR111)...7 Table 2-3 Contact Terminal Numbers (MR 102)...8 Table 2-3 Contact Terminal Numbers (MR 112)...9 Siemens Siemens Protection Devices Limited Chapter 3 Page 3 of 14

68 MR Measuring Relay 1 Introduction This manual is applicable to the following relays: 7PG (MR101) 7PG (MR111) 7PG (MR102) 7PG (MR112) Type MR relays are a range of electro-mechanical relays complying to BS142. They can be supplied with either 2 or 4 user available self reset contacts. This range of relays use the same electro-mechanical assemblies as type AR family of relays with a specific operating point. MR relays have a consistent positive action and a long service life. Table 1-1 Numbering of Relay Features First Digit Number of Identical Elements Second Digit Type of Flag Third Digit Setting Type 0 No Flag 1 Fixed 1 Hand reset 2 Variable with plug bridge Type MR relays are intended for use where a precise level of a.c. current is required to operate the relay. Type MR relays are robust and reliable in operation, suitable for instantaneous overcurrent or earth fault protection and/or in conjunction with other protection systems or plant. MR relays are used entirely for AC applications and are therefore fitted with an AC core. Fixed setting relays (MR101, MR111) are factory-set to a specific operating point from the following list: 0.1 A 0.2 A 0.25 A to 0.33 A 0.4 A to 0.5 A 0.8 A to 1.0 A 2.0 A to 2.5 A 5.0 A Note: Where a range is shown this indicates the relay coil operating range. A customer can select a single setting within this range. Variable setting relays (MR102, MR112) have an adjustable setting selected by a 7step plug bridge. The variable settings options are: 0.1 A to 0.4 A (0.10 A, 0.15 A, 0.2 A, 0.25 A, 0.30 A, 0.35 A, 0.40 A) 0.5 A to 2.0 A (0.5 A, 0.75 A, 1.0 A, 1.25 A, 1.50 A, 1.75 A, 2.0 A) 1.0 A to 4.0 A (1.0 A, 1.5 A, 2.0 A, 2.5 A, 3.0 A, 3.5 A, 4.0 A) Siemens Protection Devices Limited Chapter 3 Page 4 of 14

69 MR Measuring Relay Table 1-2 Relay Features MLFB Code Relay Number of user Flag Reset Contact Reset Setting Case Size Type available Contacts Arrangement Arrangement Type 7PG1310-1***0-0A*0 MR or 4 No Flag Self Fixed E2 7PG1310-1***0-0A*0 MR or 4 Hand reset flag Self Fixed E2 7PG1310-2***0-0A*0 MR or 4 No Flag Self Variable E2 7PG1310-2***0-0A*0 MR or 4 Hand reset flag Self Variable E2 MR101 and MR111 can be specified with any combination of make and break contacts. MR102 and MR112 can be specified with either 2 make contacts and 2 break contacts or 4 make contacts. 1.1 Contact Reset: Self Reset The output contacts of self reset relays are held in the operate position whilst the relay operate coil is energised. Siemens Siemens Protection Devices Limited Chapter 3 Page 5 of 14

70 MR Measuring Relay 2 Description of Operation 2.1 7PG (MR101) This MR Relay can be specified with 2 or 4 user available contacts. The Relay is powered from an AC supply. The AC current level at which the relay coil operates can be specified from a list of options in the MLFB code. The relay is normally de-energised. The relay is operated (energised) when the AC current flowing exceeds the current setting of RL1. The user available output contacts are held in the operate position until RL1 is de-energised, after this they return to there normal position. There is no flag indicator on the front of the relay PG1310-1**0 (MR101 2 contact) 7PG1310-1**1 (MR101 4 contact) Figure 2-1 Functional Diagram: 7PG1310-1**0 and 7PG1310-1**1 Table 2-1 Contact Terminal Numbers (MR101) Relay Type MR 101 (Max Terminal Numbers Relay Type Number of B contacts) (2 Contact) (4 Contact) PG1310-1*A0/1 0 M M M M M M 7PG1310-1*B0/1 1 M B M B M M 7PG1310-1*C0/1 2 B B B B M M 7PG1310-1BD1 3 B B M B 7PG1310-1AE1 4 B B B B Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact Siemens Protection Devices Limited Chapter 3 Page 6 of 14

71 MR Measuring Relay 2.2 7PG (MR111) This MR Relay can be specified with 2 or 4 user available contacts. The Relay is powered from an AC supply. The AC current level at which the relay coil operates can be specified from a list of options in the MLFB code. The relay is normally de-energised. The relay is operated (energised) when the AC current flowing exceeds the current setting of RL1. The user available output contacts are held in the operate position until RL1 is de-energised, after this they return to there normal position. There is a flag indicator on the front of the relay. The flag is reset by hand PG1311-1**0 (MR111 2 contact) 7PG1311-1**1 (MR111 4 contact) Figure 2-2 Functional Diagram: 7PG1311-1**0 and 7PG1311-1**1 Table 2-2 Contact Terminal Numbers (MR111) Relay Type MR 111 (Max Terminal Numbers Relay Type Number of B contacts) (2 Contact) (4 Contact) PG1311-1*A0/1 0 M M M M M M 7PG1311-1*B0/1 1 M B M B M M 7PG1311-1*C0/1 2 B B B B M M 7PG1311-1BD1 3 B B M B 7PG1311-1AE1 4 B B B B Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact. Siemens Siemens Protection Devices Limited Chapter 3 Page 7 of 14

72 MR Measuring Relay 2.3 7PG (MR102) This MR Relay can be specified with 2 or 4 user available contacts. The Relay is powered from an AC supply. The AC current level at which the relay coil operates is selected using the 7 step plug bridge. The relay is normally de-energised. The relay is operated (energised) when the AC current flowing in the RL1 exceeds the current setting of RL1. The user available output contacts are held in the operate position until RL1 is de-energised, after this they return to there normal position. There is no flag indicator on the front of the relay PG1310-2**0 (MR102 2 contact) 7PG **1 (MR102 4 contact) Figure 2-3 Functional Diagram: 7PG1310-2**0 and 7PG1310-2**1 Table 2-3 Contact Terminal Numbers (MR 102) Relay Type MR 102 (Max Terminal Numbers Relay Type Number of B contacts) (2 Contact) (4 Contact) PG1310-2*A*A* 0 M M M M M M 7PG1310-2CC10A* 2 B B M M Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact Siemens Protection Devices Limited Chapter 3 Page 8 of 14

73 MR Measuring Relay 2.4 7PG (MR112) This MR Relay can be specified with 2 or 4 user available contacts. The Relay is powered from an AC supply. The AC current level at which the relay coil operates is selected using the 7 step plug bridge. The relay is normally de-energised. The relay is operated (energised) when the AC current flowing in the RL1 exceeds the current setting of RL1. The user available output contacts are held in the operate position until RL1 is de-energised, after this they return to there normal position. There is a flag indicator on the front of the relay. The flag is reset by hand PG1311-2**0 (MR112 2 contact) 7PG **1 (MR112 4 contact) Figure 2-4 Functional Diagram: 7PG1311-2**0 and 7PG1311-2**1 Table 2-4 Contact Terminal Numbers (MR 112) Relay Type MR 102 (Max Terminal Numbers Relay Type Number of B contacts) (2 Contact) (4 Contact) PG1311-2*A*A* 0 M M M M M M 7PG1311-2CC10A* 2 B B M M Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact. Siemens Siemens Protection Devices Limited Chapter 3 Page 9 of 14

74 MR Measuring Relay 3 Performance Specification Technical Information 3.1 Contacts Attribute Make and Carry continuously Make and carry for 3 seconds Break Minimum number of operations Value 1250VAa.c. or 1250Wd.c. within limits of 660V and 5A 7500VAa.c. or 7500Wd.c. within limits of 660V and 30A 1250VAa.c. or 100W (resistive) d.c. or 50W (inductive) (L/R = 0.04) d.c. within limits of 250V and 5A 10,000 operations, within the maximum contact loading specified. 3.2 Indication 7PG13111 (MR111) are fitted with a hand reset mechanical flag indicator. 7PG13112 (MR112) are fitted with a hand reset mechanical flag indicator. 3.3 Environmental Temperature IEC68-2-1/2 and BS2011(1977) Humidity IEC Vibration Shock and bump Operating -10 C to +55 C 56 days at 95% RH and 40 C IEC Class l. IEC and BS142, (1989) Storage -25 C to +70 C Relays meet the requirements with respect to shock and bump testing for Class 1 severity. 3.4 Insulation 7PG13 Relays will withstand: 5kV 1.2/50µs waveform as IEC kV rms 50Hz for 1minute (2.5kV for 1s) between all terminals and earth 1kV rms 50Hz for 1 minute across normally open contacts to IEC and BS Siemens Protection Devices Limited Chapter 3 Page 10 of 14

75 MR Measuring Relay 4 Installation 4.1 Unpacking, Storage and Handling On receipt remove the relay from the container in which it was received and inspect it for obvious damage. It is recommended that the relay not be removed from its case. If damage has been sustained a claim should be immediately be made against the carrier, also inform Siemens Protection Devices Limited, and the nearest Siemens agent. When not required for immediate use, the relay should be returned to its original carton and stored in a clean, dry place. The relay contains static sensitive devices, which are susceptible to damage due to static discharge. The relay s electronic circuits are protected from damage by static discharge when the relay is housed in its case. There can be no requirement to disassemble any relay, since there are no user serviceable parts in the relay. If any modules have been tampered with, then the guarantee will be invalidated. Siemens Protection Devices Limited reserves the right to charge for any subsequent repairs. 4.2 Wiring The product should be wired according to the scheme requirements, with reference to the appropriate wiring diagram. 4.3 Front Cover The front cover provides additional securing of the relay element within the case. The relay cover should be in place during normal operating conditions. 4.4 Fixings Crimps Ring tongued crimps with 90 bend are recommended Panel Fixings Typical mounting screw kit per Relay consists of: 4 M4x10mm Screws 4 M4 Nuts 4 M4 Lock Washers Typical rear terminal block fixing kit (1kit per terminal block fitted to relay) Consists of: 28 M4, 8mm Screws 28 M4 Lock Washer Siemens Siemens Protection Devices Limited Chapter 3 Page 11 of 14

76 MR Measuring Relay 4.5 Relay Dimensions and Panel Fixings Relays are supplied in the E2 Epsilon case E2 Case Dimensions mm 13.5 mm 150 mm 44 mm 51.5 mm 150 mm mm 177 mm Side view of E2 case Front view of E2 case Front view of E2 front cover Side view of E2 case with front cover attached E2 Terminal Numbering Viewed from Rear Siemens Protection Devices Limited Chapter 3 Page 12 of 14

77 MR Measuring Relay 5 Maintenance 5.1 Safety The commissioning and future maintenance of this equipment should only be carried out by skilled personnel trained in protective relay operation and capable of observing all the necessary safety precautions and regulations appropriate to this equipment and also the associated primary plant. Equipment should be isolated from auxiliary supplies and the circuit breaker trip circuit prior to commencing any work on an installed product. 5.2 Preliminary Tests Check that the relay operating voltage (and reset voltage if a reset coil is fitted) are correct for the auxiliary voltage to be used. In some instances relays are to be used with the coil in a series with a voltage dropper resistor, this is advised on the Order Acknowledgement and shown on the relay label as +Ext R, suitable resistors are supplied with the relay, ensure that such resistors are mounted vertical, and secure and wired to the correct relay coil. Isolate from the auxiliary supply(s) by removing fuses and line as necessary. Physically check the wiring to the relay terminals for security and prove that it is wired correctly to the circuit schematic wiring diagrams. 5.3 Mechanical Settings It should not be necessary to adjust settings during routine tests unless parts have been replaced or other repairs carried out. Adjustment of one setting will often influence another, therefore all settings must be checked after the final adjustment. 5.4 Contacts Contact tips are fine silver on copper and should only be burnished if any pitting has occurred. Contact pressures are set by gentle pressure with contact setting pliers near to the contact stack assembly, during this operation avoid putting any stress on the contact actuating comb. Contact pressures should be measured using an accurate gram gauge at the tip of the contact leaf. Siemens Siemens Protection Devices Limited Chapter 3 Page 13 of 14

78 MR Measuring Relay 6 Applications 6.1 MR AC MEASURING RELAY Figure 6-1 Applications Diagram: MR AC Measuring Relay All of the MR relays are manufactured with an AC operating coil (RL1), this allows the relay to be connected directly to the secondary of a current transformer. Figure 6-1 shows a MR relay connected to provide phase unbalance indication on a 3-phase circuit Siemens Protection Devices Limited Chapter 3 Page 14 of 14

79 TR High Speed Tripping Relay 7PG15 TR Relays High Speed Tripping Relay Document Release History This document is issue The list of revisions up to and including this issue is: 2013 First Issue Siemens 2013 Siemens Protection Devices Limited Chapter 4 Page 1 of 46

80 TR High Speed Tripping Relay Contents 1 Introduction Burden Low Burden 7PG151 (TR1) series High Burden 7PG152 (TR2) series TR range relay features TR-A (20 Contact High Burden Relays) Contact Reset Self Reset Hand Reset Electrical Reset Hand and Electrical Reset Operate Coil Cut Off Economy Instantaneous Time Delay Cut Off Description of Operation Low Burden Relays PG (TR112) PG (TR121) PG (TR131) PG (TR141)...14 Table 2-5: Contact Terminal Numbers (10 contact) High Burden relays PG (TR212) PG (TR212 E2 Case, late break contact) PG (TR212 E2 case 6 contact, E4 case 10 contact) PG (TR214) PG (TR221) PG (TR223) PG (TR231) PG (TR233) PG (TR241) PG TR Specific Variant Relays PG (TR431) PG (TR901) Performance Specification...37 Technical Information PG151 (TR1) PG152 (TR2) Nominal Burdens...37 Table 3-1: Nominal Burdens Contacts Indication Environmental Insulation Installation Unpacking, Storage and Handling Wiring Front Cover Fixings Crimps Panel Fixings Siemens Protection Devices Limited Chapter 4 Page 2 of 46

81 TR High Speed Tripping Relay 4.5 Relay Dimensions and Panel Fixings E2 Case Dimensions E4 Case Dimensions Maintenance Safety Unpacking, Handling and Storage Preliminary Tests Mechanical Settings Contacts Applications D.C. Circuit Diagram 400KV Mesh Substation...43 Figure 6-1 Applications Diagram: 400 KV Mesh Substation TR 901 Plant Follower scheme...44 Figure 6-2 Applications Diagram: 7PG (TR 901) TR KV Mesh Substation Scheme...45 Figure 6-3 Applications Diagram: 7PG (TR 231)...45 List of Figures Figure 2-1 functional Diagram: 7PG1511-2**4 (TR112)...8 Figure 2-2 functional Diagram: 7PG1511-2**7(TR112)...9 Figure 2-3 functional Diagram: 7PG1512-1**4 (TR121)...10 Figure 2-4 functional Diagram: 7PG1512-1**7 (TR121)...11 Figure 2-5 functional Diagram: 7PG1513-1**3 (TR131)...12 Figure 2-6 functional Diagram: 7PG1513-1**6 (TR131)...13 Figure 2-7 functional Diagram: 7PG1514-1**3 (TR141)...14 Figure 2-8 functional Diagram: 7PG1514-1**6 (TR141)...15 Figure 2-9 functional Diagram: 7PG1521-2**3 (TR212)...16 Figure 2-10 functional Diagram: 7PG1521-2**6 (TR212)...17 Figure 2-11 functional Diagram: 7PG1521-2**3 (TR212)...18 Figure 2-12 functional Diagram: 7PG1521-2**6 (TR212)...19 Figure 2-13 functional Diagram: 7PG1521-4**3 (TR214)...20 Figure 2-14 functional Diagram: 7PG1521-4**6 (TR214)...21 Figure 2-15 functional Diagram: 7PG1522-1**4 (TR221)...22 Figure 2-16 functional Diagram: 7PG1522-1**7 (TR221)...23 Figure 2-17 functional Diagram: 7PG1522-3**4 (TR221)...24 Figure 2-18 functional Diagram: 7PG1522-3**7 (TR223)...25 Figure 2-19 functional Diagram: 7PG1523-1**3 (TR231)...26 Figure 2-20 functional Diagram: 7PG1523-1**6 (TR231)...27 Figure 2-21 functional Diagram: 7PG1523-3**3 (TR233)...28 Figure 2-22 functional Diagram: 7PG1523-3**6 (TR233)...29 Figure 2-23 functional Diagram: 7PG1524-1**3 (TR241)...30 Figure 2-24 functional Diagram: 7PG1524-1**6 (TR241)...31 Figure 2-25 functional Diagram: 7PG1524-3**3 (TR243)...32 Figure 2-26 functional Diagram: 7PG1524-3**6 (TR243)...33 Figure 2-27 functional Diagram: 7PG1543-1**403CN (TR431)...34 Figure 2-28 functional Diagram: 7PG1543-1**403CN (TR431)...35 Figure 2-29 functional Diagram: 7PG1563-1**603A* (TR901)...36 Figure 6-1 Applications Diagram: 400 KV Mesh Substation...43 Figure 6-2 Applications Diagram: 7PG (TR 901)...44 Figure 6-3 Applications Diagram: 7PG (TR 231)...45 Siemens 2013 Siemens Protection Devices Limited Chapter 4 Page 3 of 46

82 TR High Speed Tripping Relay List of Tables Table 1-1 Break Down of Low and High Burden Relays...5 Table 1-2 Numbering of Relay Features...5 Table 1-3 Relay Burden Features...6 Table 1-4 Relay Features...6 Table 2-1 Contact Terminal Numbers (7 contact)...8 Table 2-2 Contact Terminal Numbers (11 contact)...9 Table 2-3 Contact Terminal Numbers (7 contact)...10 Table 2-4 Contact Terminal Numbers (11 contact)...11 Table 2-5 Contact Terminal Numbers (6 contact)...12 Table 2-6 Contact Terminal Numbers (10 contact)...13 Table 2-7 Contact Terminal Numbers (6 contact)...14 Table 2-8 Contact Terminal Numbers (6 contact)...16 Table 2-9 Contact Terminal Numbers (10 contact)...17 Table 2-10 Contact Terminal Numbers (6 contact)...18 Table 2-11 Contact Terminal Numbers (10 contact)...19 Table 2-12 Contact Terminal Numbers (6 contact)...20 Table 2-13 Contact Terminal Numbers (10 contact)...21 Table 2-14 Contact Terminal Numbers (7 contact)...22 Table 2-15 Contact Terminal Numbers (11 contact)...23 Table 2-16 Contact Terminal Numbers (7 contact)...24 Table 2-17 Contact Terminal Numbers (11 contact)...25 Table 2-18 Contact Terminal Numbers (6 contact)...26 Table 2-19 Contact Terminal Numbers (10 contact)...27 Table 2-20 Contact Terminal Numbers (6 contact)...28 Table 2-21 Contact Terminal Numbers (10 contact)...29 Table 2-22 Contact Terminal Numbers (6 contact)...30 Table 2-23 Contact Terminal Numbers (10 contact)...31 Table 2-24 Contact Terminal Numbers (6 contact)...32 Table 2-25 Contact Terminal Numbers (10 contact)...33 Table 2-26 Contact Terminal Numbers (7 contact)...34 Table 2-27 Contact Terminal Numbers (7 contact)...35 Table 2-28 Contact Terminal Numbers (10 contact) Siemens Protection Devices Limited Chapter 4 Page 4 of 46

83 TR High Speed Tripping Relay 1 Introduction This manual is applicable to the following relays: 7PG (TR112) 7PG (TR121) 7PG (TR131) 7PG (TR141) 7PG (TR212) 7PG (TR214) 7PG (TR221) 7PG (TR223) 7PG (TR231) 7PG (TR233) 7PG (TR241) 7PG (TR243) 7PG (TR312) 7PG (TR431) 7PG (TR901) Type 7PG15 relays are a range of multi-contact attracted armature relays designed to comply with both IEC and to BS142. A wide range of models are available to meet the requirements of the electric supply industry. These high speed, positive action relays can be supplied in a modular and draw out type case. The cases are of a robust design for a long, reliable service life. Tripping relays incorporate a hand reset operation indicator flag. The majority of the 7PG15 range of relays can be separated in to 2 categories: High Burden relays and Low Burden relays. Definitions of the burden levels are provided in the following standard. Table 1-1 Break Down of Low and High Burden Relays Standard Relay Low Burden ESI 48-4 EB1 & NGTS , ESI 1 7PG1511-2, 7PG1512-1, 7PG1513-1, 7PG High Burden ESI 48-4 EB2 & NGTS , ESI 2 7PG1521-2, 7PG1521-4, 7PG1522-1, 7PG1522-3, 7PG1523-1, 7PG1523-3, 7PG1524-1, 7PG Table 1-2 Numbering of Relay Features First Digit Second Digit Type of Reset Third Digit Operating Coil Cut Off 1 Low Burden 1 Self Reset 1 Instantaneous 2 High Burden 2 Hand reset 2 Economy 3 Electrical Reset 3 Time delay 4 Hand and Electrical Reset 4 Time delay economy Aside from the 2 categories above, there are also specific variant application 7PG15 relays details of these relays are provided in the appendices. 7PG (TR312) NGC (CEGB) P15. (low burden trip relay) 7PG (TR431) NGC (CEGB) TDM 5/11. (Control relay) 7PG (TR901) (high burden repeat relay) Siemens 2013 Siemens Protection Devices Limited Chapter 4 Page 5 of 46

84 TR High Speed Tripping Relay 1.1 Burden Low Burden 7PG151 (TR1) series A Low Burden TR relay is normally utilised for tripping applications with double pole switched trip initiations. A Low Burden TR relay must comply with the requirements specified in Table 1-3 Relay Burden Features. Type 7PG151 (TR1) relays are suitable for application for tripping and auxiliary duties where immunity to capacitance discharge and high minimum operation currents are not required. These relays are not intended for use with current operated series follower relays High Burden 7PG152 (TR2) series A High Burden TR relay is normally utilised for tripping applications with single pole switched trip initiations. A High Burden TR relay must comply with the requirements specified in Table 1-3 Relay Burden Features. Type 7PG152 (TR2) have a high burden, this ensures immunity to capacitance discharge currents. The capacitance discharge currents can arise on substation battery circuits if an earth fault occurs on the battery wiring. They are also suitable for certain applications where they are remote from the initiation signal. A high burden also permits reliable operation of current operated series repeat relays. After operation of the relay the high burden is automatically either switched out or reduced to a low economy level. This switch out can be either instantaneous or time delayed. (This is displayed in Table 1-4 Relay Features.) Table 1-3 Relay Burden Features Rating Class High Burden Low Burden Power Consumption < 150W and within 30 ms after operation <20W < 100W Minimum Operating Current > 50mA >25mA Minimum Operating Current for 48V & 30V 20mA 10mA Relays Capacitive Discharge Immunity Only required on 110V and 48V TR relays Not required 1.2 TR range relay features Table 1-4 Relay Features MLFB Code Relay Type Number of Contacts Contact Reset Arrangement Operating Coil Cut-off Specification Burden level Modular Case Size 7PG TR or 11 Self Economy EB1 Low E4 7PG TR or 11 Hand Instantaneous EB1 Low E2 7PG TR or 10 Electrical Instantaneous EB1 Low E2 7PG TR or 10 Hand & Electrical Instantaneous EB1 Low E2 7PG TR or 10 Self Economy EB2 High E2/E4 7PG TR or 10 Self (2s Delay) Economy 2s relay EB2 High E4 reset delay 7PG TR or 11 Hand Instantaneous EB2 High E2 7PG TR or 11 Hand 40/60ms delay EB2 High E4 7PG TR or 10 Electrical Instantaneous EB2 High E2 7PG TR or 10 Electrical 40/60ms delay EB2 High E4 7PG TR or 10 Hand & Electrical Instantaneous EB2 High E2 7PG TR or 10 Hand & Electrical 40/60ms delay EB2 High E Siemens Protection Devices Limited Chapter 4 Page 6 of 46

85 TR High Speed Tripping Relay 1.3 TR-A (20 Contact High Burden Relays) The High Burden relays available in the TR range are also available with 20 output contacts. These 20 contact relays are named the TR-A range, a separate chapter covering the specifics of the TR-A range can be found in chapter Contact Reset Self Reset The output contacts of self reset relays are held in the operate position whilst the relay operate coil is energised Hand Reset The contacts of hand reset relays are held in the operated position by a mechanical latch which is released by the cover mounted reset Electrical Reset The contacts of electrically reset relays are held in the operated position by a mechanical latch which is released by energising the reset coil Hand and Electrical Reset Hand and electrical reset models can have the main contacts reset either by hand as explained in or electrically as explained in Operate Coil Cut Off Economy After initial operation the burden of the relay automatically reduced to a low economy level Instantaneous After initial operation the burden of the relay automatically switches out. An internal heavy duty contact is arranged to open circuit the operate coil when operated Time Delay Cut Off Where instantaneous cut-off relays are utilised a normally closed contact opens the operating coil circuit and so the burden is reduced to zero instantaneously. A time delay circuit has been introduced on various 7PG15 variants for occasions where another series operating element requires a longer operating time. Siemens 2013 Siemens Protection Devices Limited Chapter 4 Page 7 of 46

86 TR High Speed Tripping Relay 2 Description of Operation 2.1 Low Burden Relays PG (TR112) This low burden self reset economy relay can be specified with either 7 or 11 user available contacts. When RL1 is operated by the protection contact PR, the contact RL1-A closes this energises the auxiliary relay RL2. RL2 has two break contacts (One of which isn t connected), when energised the contacts cause R1 to be connected in series with RL1. The moving of R1 in to series with the main relay (RL1) reduces the burden on RL1 (This is the economy function of the relay operating) PG1511-2**4 (TR112 7 contact) PG (TR 112) 7 Contact R1 Values VDC R x 180R in parallel = x 68R in series = x 820R in parallel = x 1000R in parallel = x 3900R in parallel = x 3900R in series = RL1-A R1 R L1 PR +ve 27 RL1-A RL2 -ve 28 Figure 2-1 functional Diagram: 7PG1511-2**4 (TR112) Table 2-1 Contact Terminal Numbers (7 contact) Relay type Relay Type TR 112 (Max No of B Epsilon Case Terminal Numbers contacts) PG1511-2*A4 0 M M M M M M M 7PG1511-2*B4 1 M B M M M M M 7PG1511-2*C4 2 B B M M M M M 7PG1511-2*D4 3 B B M B M M M 7PG1511-2*E4 4 B B B B M M M 7PG1511-2*F4 5 B B B B M B M 7PG1511-2*G4 6 B B B B B B M Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact. Note: Contact pairing is always a make contact, it is therefore shown this way on Figure Siemens Protection Devices Limited Chapter 4 Page 8 of 46

87 TR High Speed Tripping Relay PG1511-2**7 (TR contact) PG (TR 112) 11 Contact R1 Values VDC R x 180R in parallel = x 68R in series = x 820R in parallel = x 1000R in parallel = x 3900R in parallel = x 3900R in series = RL1-A R1 R L1 PR +ve 27 RL1-A RL2 -ve 28 Figure 2-2 functional Diagram: 7PG1511-2**7(TR112) Table 2-2 Contact Terminal Numbers (11 contact) Relay Type Relay Type TR 112 (Max No of B contacts) Epsilon Case Terminal Numbers PG1511-2*A7 0 M M M M M M M M M M M 7PG1511-2*B7 1 M B M M M M M M M M M 7PG1511-2*C7 2 B B M M M M M M M M M 7PG1511-2*D7 3 B B M B M M M M M M M 7PG1511-2*E7 4 B B B B M M M M M M M 7PG1511-2*F7 5 B B B B M B M M M M M 7PG1511-2*G7 6 B B M B M M B B B M M 7PG1511-2*H7 7 B B B B M M B B B M M 7PG1511-2*J7 8 B B B B M B B B B M M 7PG1511-2*K7 9 B B B B M B B B B B M Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact. Note: Contact pairings 9-11 and are always make contacts, they are therefore shown this way on Figure 2-2. Siemens 2013 Siemens Protection Devices Limited Chapter 4 Page 9 of 46

88 TR High Speed Tripping Relay PG (TR121) This is a low burden latching trip relay which is instantaneously cut off and reset by hand. This relay can be specified with either 7 or 11 user available contacts. Operation of protection contact PR causes RL1 to operate. The operation of RL1 causes RL1-A to break therefore removing the supply to RL1 instantaneously PG1512-1**4 (TR121 7 contact) PG (TR 121) 7 Contact PR +ve RL1-A 27 RL1-A R L1 -ve 28 Figure 2-3 functional Diagram: 7PG1512-1**4 (TR121) Table 2-3 Contact Terminal Numbers (7 contact) Relay type Relay Type TR 121 (Max No of B Epsilon Case Terminal Numbers contacts) PG1512-1*A4 0 M M M M M M M 7PG1512-1*B4 1 M B M M M M M 7PG1512-1*C4 2 B B M M M M M 7PG1512-1*D4 3 B B M B M M M 7PG1512-1*E4 4 B B B B M M M 7PG1512-1*F4 5 B B B B B M M Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact. Note: Contact pairings and are always make contacts, they are therefore shown this way on Figure Siemens Protection Devices Limited Chapter 4 Page 10 of 46

89 TR High Speed Tripping Relay PG1512-1**7 (TR contact) PG (TR 121) 11 Contact PR +ve RL1-A 27 RL1-A RL1 -ve 28 Figure 2-4 functional Diagram: 7PG1512-1**7 (TR121) Table 2-4 Contact Terminal Numbers (11 contact) Relay Type Relay Type TR 121 (Max No of B contacts) Epsilon Case Terminal Numbers PG1512-1*A7 0 M M M M M M M M M M M 7PG1512-1*B7 1 M B M M M M M M M M M 7PG1512-1*C7 2 B B M M M M M M M M M 7PG1512-1*D7 3 B B M B M M M M M M M 7PG1512-1*E7 4 B B B B M M M M M M M 7PG1512-1*F7 5 B B B B M B M M M M M 7PG1512-1*G7 6 B B M B M M B B B M M 7PG1512-1*H7 7 B B B B M M B B B M M 7PG1512-1*J7 8 B B B B M B B B B M M 7PG1512-1*K7 9 B B B B M B B B B B M Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact. Note: Contact pairings 9-11 and are always make contacts, they are therefore shown this way on Figure 2-4. Siemens 2013 Siemens Protection Devices Limited Chapter 4 Page 11 of 46

90 TR High Speed Tripping Relay PG (TR131) This is a low burden latching trip relay which is instantaneously cut off and reset electrically. This relay can be specified with either 6 or 10 user available contacts. Operation of protection contact PR causes RL1 to operate. The operation of RL1 causes RL1-A to break therefore removing the supply to RL1 instantaneously. The operation of RL1 also causes RL1-B to make. The relay is reset by applying volts across terminals 22 and 21 (6 Contact) or 25 and 26 (10 Contact). RL1-B will be closed from the operation of RL1, hence creating a path to energise the Reset Solenoid PG1513-1**3 (TR131 6 contact) PG (TR 131) 6 Contact R1 Values VDC R1 24 Not fitted Not Fitted PR +ve 27 RL1-A RL1-A RL1-B R L1 -ve 28 RESET +ve 21 RL1-B R1 RESET - ve SOLENOID 22 Figure 2-5 functional Diagram: 7PG1513-1**3 (TR131) Table 2-5 Contact Terminal Numbers (6 contact) Relay type Relay Type TR 131 (Max No of B Epsilon Case Terminal Numbers contacts) PG1513-1*A3 0 M M M M M M 7PG1513-1*B3 1 M B M M M M 7PG1513-1*C3 2 B B M M M M 7PG1513-1*D3 3 B B M B M M 7PG1513-1*E3 4 B B B B M M 7PG1513-1*F3 5 B B B B B M Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact. Note: Contact pairings 5-7 and are always make contacts, they are therefore shown this way on Figure Siemens Protection Devices Limited Chapter 4 Page 12 of 46

91 TR High Speed Tripping Relay PG1513-1**6 (TR contact) PG (TR 131) 10 Contact R1 Values VDC R1 24 Not fitted Not Fitted PR +ve 27 RL1-A RL1-A RL1-B RL1 -ve 28 RESET +ve RESET RL1-B R1 - ve 25 SOLENOID Figure 2-6 functional Diagram: 7PG1513-1**6 (TR131) 26 Table 2-6 Contact Terminal Numbers (10 contact) Relay Type Relay Type TR 231 (Max No of B contacts) Epsilon Case Terminal Numbers PG1523-1*A6 0 M M M M M M M M M M 7PG1523-1*B6 1 M B M M M M M M M M 7PG1523-1*C6 2 B B M M M M M M M M 7PG1523-1*D6 3 B B M B M M M M M M 7PG1523-1*E6 4 B B B B M M M M M M 7PG1523-1*F6 5 B B B B M B M M M M 7PG1523-1*G6 6 B B M B M M B B B M 7PG1523-1*H6 7 B B B B M M B B B M 7PG1523-1*J6 8 B B B B M B B B B M Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact. Note: Contact pairings 9-11 and are always make contacts, they are therefore shown this way on Figure 2-6. Siemens 2013 Siemens Protection Devices Limited Chapter 4 Page 13 of 46

92 TR High Speed Tripping Relay PG (TR141) This is a low burden latching trip relay which is instantaneously cut off and reset either electrically or by hand. This relay can be specified with either 6 or 10 user available contacts. Operation of protection contact PR causes RL1 to operate. The operation of RL1 causes RL1-A to break therefore removing the supply to RL1 instantaneously. The relay is reset by applying volts across terminals 22 and 21 (6 Contact) or 25 and 26 (10 Contact). RL1-B will be closed from the operation of RL1, hence creating a path to energise the Reset Solenoid PG1514-1**3 (TR141 6 contact) PG (TR 141) 6 Contact R1 Values VDC R1 24 Not fitted Not fitted PR +ve 27 RESET +ve RL1-A 21 RL1-B RL1-A R1 RL1-B RL1 RESET SOLENOID -ve 28 -ve 22 Figure 2-7 functional Diagram: 7PG1514-1**3 (TR141) Table 2-7 Contact Terminal Numbers (6 contact) Relay type Relay Type TR 141 (Max No of B Epsilon Case Terminal Numbers contacts) PG1514-1*A3 0 M M M M M M 7PG1514-1*B3 1 M B M M M M 7PG1514-1*C3 2 B B M M M M 7PG1514-1*D3 3 B B M B M M 7PG1514-1*E3 4 B B B B M M 7PG1514-1*F3 5 B B B B B M Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact. Note: Contact pairing is always a make contact, it is therefore shown this way on Figure Siemens Protection Devices Limited Chapter 4 Page 14 of 46

93 TR High Speed Tripping Relay PG1514-1**6 (TR contact) PG (TR 141) 10 Contact R1 Values VDC R1 24 Not fitted Not fitted PR +ve 27 RESET +ve RL1-A 25 RL1-B RL1-A R1 RL1-B R L1 RESET SOLENOID -ve 28 -ve 26 Figure 2-8 functional Diagram: 7PG1514-1**6 (TR141) Table 2-5: Contact Terminal Numbers (10 contact) Relay Type Relay Type TR 141 (Max No of B contacts) Epsilon Case Terminal Numbers PG1514-1*A6 0 M M M M M M M M M M 7PG1514-1*B6 1 M B M M M M M M M M 7PG1514-1*C6 2 B B M M M M M M M M 7PG1514-1*D6 3 B B M B M M M M M M 7PG1514-1*E6 4 B B B B M M M M M M 7PG1514-1*F6 5 B B B B M B M M M M 7PG1514-1*G6 6 B B M B M M B B B M 7PG1514-1*H6 7 B B B B M M B B B M 7PG1514-1*J6 8 B B B B M B B B B M Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact. Note: Contact pairing 9-11 is always a make contact, it is therefore shown this way on Figure 2-8. Siemens 2013 Siemens Protection Devices Limited Chapter 4 Page 15 of 46

94 TR High Speed Tripping Relay 2.2 High Burden relays PG (TR212) This high burden self reset economy relay can be specified with either 6 or 10 user available contacts. The relay has an option of two different circuits. One containing two elements used to switch in the economy circuit. The other circuit option uses a late break contact to switch in the economy circuit, this allows this relay to be provided in an E2 case for both the 6 contact and 10 contact variant (the two element circuit is provided in a E2 case for the 6 contact variant and a E4 case for the 10 contact variant.) Note: The TR-A 20 contact version of the TR212 is constructed with two elements used to provide the high burden economy function PG (TR212 E2 Case, late break contact) When RL1 is operated by the protection contact PR, the contact RL1-A breaks which removes the high burden part of the circuit (R1). RL1-B is a late break contact, it will take longer to open than RL1-A meaning that the economy circuit (R3/1 and R3/2) will be switched in after the high burden circuit (R1) has been removed thus reducing the burden on the relay PG1521-2**3 (TR212 6 contact) PG (TR 212) 6 Contact R3/1, R3/2, R3/3 and R3 Values VDC R3/1 R3/2 R3/3 R NA RL1-B RL1-A PR +ve 27 R3/1 R3/2 R3/3 RL1 -ve 28 RL1-B RL1-A R1 Figure 2-9 functional Diagram: 7PG1521-2**3 (TR212) Table 2-8 Contact Terminal Numbers (6 contact) Relay type Relay Type TR 212 (Max No of B Epsilon Case Terminal Numbers contacts) PG1521-2*A3 0 M M M M M M 7PG1521-2*B3 1 M B M M M M 7PG1521-2*C3 2 B B M M M M 7PG1521-2*D3 3 B B M B M M 7PG1521-2*E3 4 B B B B M M 7PG1521-2*F3 5 B B B B M B Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact. Note: Contact pairing 9-11 is always a make contact, it is therefore shown this way on Figure Siemens Protection Devices Limited Chapter 4 Page 16 of 46

95 TR High Speed Tripping Relay PG1521-2**6 (TR contact) R3/1, R3/2, R3/3 and R3 Values VDC R3/1 R3/2 R3/3 R NA NA NA NA Figure 2-10 functional Diagram: 7PG1521-2**6 (TR212) Table 2-9 Contact Terminal Numbers (10 contact) Relay Type Relay Type TR 212 (Max No of B contacts) Epsilon Case Terminal Numbers PG1521-2*A6 0 M M M M M M M M M M 7PG1521-2*B6 1 M B M M M M M M M M 7PG1521-2*C6 2 B B M M M M M M M M 7PG1521-2*D6 3 B B M B M M M M M M 7PG1521-2*E6 4 B B B B M M M M M M 7PG1521-2*F6 5 B B B B M B M M M M 7PG1521-2*G6 6 B B M B M M B B B M 7PG1521-2*H6 7 B B B B M M B B B M 7PG1521-2*J6 8 B B B B M B B B B M Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact. Note: Contact pairings 9-11 and are always make contacts, they are therefore shown this way on Figure Siemens 2013 Siemens Protection Devices Limited Chapter 4 Page 17 of 46

96 TR High Speed Tripping Relay PG (TR212 E2 case 6 contact, E4 case 10 contact) When RL1 is operated by the protection contact PR, the contact RL1-A closes and the contact RL1-B opens. The closing of RL1-A energises the auxiliary relay RL2 and the opening of RL1-B removes the shunt Resistor R1 from the circuit. RL2 has two break contacts (One of which isn t connected), when energised the contacts cause R3 to be connected in series with RL1. The moving of R3 in to series with the main relay (RL1) reduces the burden on RL1 (This is the economy function of the relay operating). The value of R1 and R3 can be found in table PG1521-2**3 (TR212 6 contact) PG (TR 212) 6 Contact RL1-B RL1-A R1 and R3 Values VDC R1 R3 24 Not Fitted 2 x 180 in parallel = Not Fitted 2 x 68 in series = x 820 in parallel = x 100R in series =200 2 x 3K9 in parallel = R3 RL1 PR +ve 27 RL1-A RL2 RL1-B R1 - ve 28 Figure 2-11 functional Diagram: 7PG1521-2**3 (TR212) Table 2-10 Contact Terminal Numbers (6 contact) Relay type Relay Type TR 212 (Max No of B Epsilon Case Terminal Numbers contacts) PG1521-2*A3 0 M M M M M M 7PG1521-2*B3 1 M B M M M M 7PG1521-2*C3 2 B B M M M M 7PG1521-2*D3 3 B B M B M M 7PG1521-2*E3 4 B B B B M M 7PG1521-2*F3 5 B B B B M B Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact. Note: Contact pairing 9-11 is always a make contact, it is therefore shown this way on Figure Siemens Protection Devices Limited Chapter 4 Page 18 of 46

97 TR High Speed Tripping Relay PG1521-2**6 (TR contact) PG (TR 212) 10 Contact RL1-B RL1-A R1 and R3 Values VDC R1 R3 24 Not Fitted 2 x 180 in parallel = Not Fitted 2 x 68 in series = x 820 in parallel = x 100R in series =200 2 x 3K9 in parallel = R3 RL1 PR +ve 27 RL1-A RL2 RL1-B R1 - ve 28 Figure 2-12 functional Diagram: 7PG1521-2**6 (TR212) Table 2-11 Contact Terminal Numbers (10 contact) Relay Type Relay Type TR 212 (Max No of B contacts) Epsilon Case Terminal Numbers PG1521-2*A6 0 M M M M M M M M M M 7PG1521-2*B6 1 M B M M M M M M M M 7PG1521-2*C6 2 B B M M M M M M M M 7PG1521-2*D6 3 B B M B M M M M M M 7PG1521-2*E6 4 B B B B M M M M M M 7PG1521-2*F6 5 B B B B M B M M M M 7PG1521-2*G6 6 B B M B M M B B B M 7PG1521-2*H6 7 B B B B M M B B B M 7PG1521-2*J6 8 B B B B M B B B B M Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact. Note: Contact pairings 9-11 and are always make contacts, they are therefore shown this way on Figure Siemens 2013 Siemens Protection Devices Limited Chapter 4 Page 19 of 46

98 TR High Speed Tripping Relay PG (TR214) This is a high burden latching trip which is switched to economy after operation. The relay has a 2 second delayed drop off. This Relay can be specified with either 6 or 10 user available contacts. Operation of protection contact PR causes RL1 and RL3 to operate. Operation of RL3 causes RL1 to be switched to economy mode (Supplied via R4). When PR resets RL3 is de-energised. RL3 has a 2 second time delayed reset characteristic so RL1 resets after elapse of this 2 second delay PG1521-4**3 (TR214 6 contact) PG (TR 214) 6 Contact R1 R5, V1, C1 and D1 Values VDC R1 R2 R3 R4 R5 V1 C1 D1 24 Not Fitted Not Fitted Not Fitted Not Fitted 200µF Not Fitted 30 Not Fitted Not Fitted Not Fitted Not Fitted 200µF Not Fitted Not Fitted Not Fitted 200µF Not Fitted Z15L6 100µF 1N Not Fitted Not Fitted Not Fitted Not Fitted Not Fitted Not Fitted Not Fitted Not Fitted RL1 A RL2/3A R4 RL1 A RL1 25 R5 RL2/3A +VE RL3 T.D.D.O R1 PR +ve 27 C1 D1 R2 R3 V1 V RL2 - ve 28 Figure 2-13 functional Diagram: 7PG1521-4**3 (TR214) Table 2-12 Contact Terminal Numbers (6 contact) Relay type Relay Type TR 214 (Max No of B Epsilon Case Terminal Numbers contacts) PG1521-4*A3 0 M M M M M M 7PG1521-4*B3 1 M B M M M M 7PG1521-4*C3 2 B B M M M M 7PG1521-4*D3 3 B B B M M M 7PG1521-4*E3 4 B B B M B M Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact. Note: Contact pairings 6-8 and are always make contacts, they are therefore shown this way on Figure Siemens Protection Devices Limited Chapter 4 Page 20 of 46

99 TR High Speed Tripping Relay PG1521-4**6 (TR contact) PG (TR 214) 10 Contact R1 R5, V1, C1 and D1 Values VDC R1 R2 R3 R4 R5 V1 C1 D1 24 Not Fitted Not Fitted Not Fitted Not Fitted 200µF Not Fitted 30 Not Fitted Not Fitted Not Fitted Not Fitted 200µF Not Fitted Not Fitted Not Fitted 200µF Not Fitted Z15L6 100µF 1N Not Fitted Not Fitted Not Fitted Not Fitted Not Fitted Not Fitted Not Fitted Not Fitted RL1A RL2/3A R4 RL1A R L1 25 R5 RL2/3A +VE RL3 T.D.D.O R1 PR +ve 27 C1 D1 R2 R3 V1 V RL2 -ve 28 Figure 2-14 functional Diagram: 7PG1521-4**6 (TR214) Table 2-13 Contact Terminal Numbers (10 contact) Relay Type Relay Type TR 214 (Max No of B contacts) Epsilon Case Terminal Numbers PG1521-4*A6 0 M M M M M M M M M M 7PG1521-4*B6 1 M B M M M M M M M M 7PG1521-4*C6 2 B B M M M M M M M M 7PG1521-4*D6 3 B B M B M M M M M M 7PG1521-4*E6 4 B B B B M M M M M M 7PG1521-4*F6 5 B B B B M B M M M M 7PG1521-4*G6 6 B B M B M M B B B M 7PG1521-4*H6 7 B B B B M M B B B M 7PG1521-4*J6 8 B B B B M B B B B M Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact. Note: Contact pairings 9-11 and are always make contacts, they are therefore shown this way on Figure Siemens 2013 Siemens Protection Devices Limited Chapter 4 Page 21 of 46

100 TR High Speed Tripping Relay PG (TR221) This is a high burden latching trip relay which is instantaneously cut off and reset by hand. This relay can be specified with either 7 or 11 user available contacts. Operation of protection contact PR causes RL1 to operate. The operation of RL1 causes RL1-A to break therefore removing the supply to RL1 instantaneously PG1522-1**4 (TR221 7 contact) PG (TR 221) 7 Contact R1 Values VDC R1 24 Not fitted 30 Not fitted x 100R in series = PR +ve RL1-A 27 R1 RL1-A RL1 -ve 28 Figure 2-15 functional Diagram: 7PG1522-1**4 (TR221) Table 2-14 Contact Terminal Numbers (7 contact) Relay type Relay Type TR 221 (Max No of B Epsilon Case Terminal Numbers contacts) PG1522-1*A4 0 M M M M M M M 7PG1522-1*B4 1 M B M M M M M 7PG1522-1*C4 2 B B M M M M M 7PG1522-1*D4 3 B B M B M M M 7PG1522-1*E4 4 B B M B B M M Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact. Note: Contact pairings 5-7, and are always make contacts, they are therefore shown this way on Figure Siemens Protection Devices Limited Chapter 4 Page 22 of 46

101 TR High Speed Tripping Relay PG1522-1**7 (TR contact) PG (TR 221) 11 Contact R1 Values VDC R1 24 Not fitted 30 Not fitted x 100R in series = PR +ve RL1-A 27 R1 RL1-A R L1 -ve 28 Figure 2-16 functional Diagram: 7PG1522-1**7 (TR221) Table 2-15 Contact Terminal Numbers (11 contact) Relay Type Relay Type TR 221 (Max No of B contacts) Epsilon Case Terminal Numbers PG1522-1*A7 0 M M M M M M M M M M M 7PG1522-1*B7 1 M B M M M M M M M M M 7PG1522-1*C7 2 B B M M M M M M M M M 7PG1522-1*D7 3 B B M B M M M M M M M 7PG1522-1*E7 4 B B B B M M M M M M M 7PG1522-1*F7 5 B B B B M B M M M M M 7PG1522-1*G7 6 B B M B M M B B B M M 7PG1522-1*H7 7 B B B B M M B B B M M 7PG1522-1*J7 8 B B B B M B B B B M M Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact. Note: Contact pairings 9-11, and are always make contacts, they are therefore shown this way on Figure Siemens 2013 Siemens Protection Devices Limited Chapter 4 Page 23 of 46

102 TR High Speed Tripping Relay PG (TR223) This is a high burden latching trip relay with a 40/60ms delay before cut off. It is reset by hand. This relay can be specified with either 7 or 11 user available contacts. RL1 and RL2 are energised together (in series) when the +ve is applied to terminal 27. The NO contact of RL2 closes providing an alternative supply path to RL1. The break contact of RL1 opens causing the DC supply to be interrupted to RL2. RL2 has a time delayed (40/60ms) drop-off time. After this time delay has elapsed its NO contact re-opens and removes the supply from RL PG1522-3**4 (TR223 7 contact) PG (TR 223) 7 Contact R1 Values VDC R1 24 Not fitted 30 Not fitted x 100R in series = Not fitted RL1A -ve 28 RL1 A RL1 R1 RL2 T.D.D.O PR +ve 27 Figure 2-17 functional Diagram: 7PG1522-3**4 (TR221) Table 2-16 Contact Terminal Numbers (7 contact) Relay type Relay Type TR 223 (Max No of B Epsilon Case Terminal Numbers contacts) PG1522-3*A4 0 M M M M M M M 7PG1522-3*B4 1 M B B M M M M 7PG1522-3*C4 2 B B B M M M M 7PG1522-3*D4 3 B B B M M M M 7PG1522-3*E4 4 B B B M B M M Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact. Note: Contact pairings 6-8, and are always make contacts, they are therefore shown this way on Figure Siemens Protection Devices Limited Chapter 4 Page 24 of 46

103 TR High Speed Tripping Relay PG1522-3**7 (TR contact) PG (TR 223) 11 Contact R1 Values VDC R1 24 Not fitted 30 Not fitted x 100R in series = Not fitted RL1A -ve 28 RL1 A RL1 R1 RL2 T.D.D.O PR +ve 27 Figure 2-18 functional Diagram: 7PG1522-3**7 (TR223) Table 2-17 Contact Terminal Numbers (11 contact) Relay Type Relay Type TR 223 (Max No of B contacts) Epsilon Case Terminal Numbers PG1522-3*A7 0 M M M M M M M M M M M 7PG1522-3*B7 1 M B M M M M M M M M M 7PG1522-3*C7 2 B B M M M M M M M M M 7PG1522-3*D7 3 B B M B M M M M M M M 7PG1522-3*E7 4 B B B B M M M M M M M 7PG1522-3*F7 5 B B B B M B M M M M M 7PG1522-3*G7 6 B B M B M M B B B M M 7PG1522-3*H7 7 B B B B M M B B B M M 7PG1522-3*J7 8 B B B B M B B B B M M Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact. Note: Contact pairings 9-11, and are always make contacts, they are therefore shown this way on Figure Siemens 2013 Siemens Protection Devices Limited Chapter 4 Page 25 of 46

104 TR High Speed Tripping Relay PG (TR231) This is a high burden trip relay which is instantaneously cut off and reset electrically. This relay can be specified with either 6 or 10 user available contacts. Operation of protection contact PR causes RL1 to operate. The operation of RL1 causes RL1-A to break therefore removing the supply to RL1 instantaneously. The relay is reset by applying volts across terminals 22 and 21 (6 Contact) or 25 and 26 (10 Contact). RL1-B will be closed from the operation of RL1, hence creating a path to energise the Reset Solenoid PG1523-1**3 (TR231 6 contact) PG (TR 231) 6 Contact R1 and R3 Values VDC R1 R2 24 Not fitted Not fitted 30 Not fitted Not fitted x 100R in series Not fitted = PR +ve 27 RL1-A R1 RL1-A RL1-B RL1 -ve 28 RESET +ve 21 RL1-B RESET SOLENOID R2 -ve 22 Figure 2-19 functional Diagram: 7PG1523-1**3 (TR231) Table 2-18 Contact Terminal Numbers (6 contact) Relay type Relay Type TR 231 (Max No of B Epsilon Case Terminal Numbers contacts) PG1523-1*A3 0 M M M M M M 7PG1523-1*B3 1 M B M M M M 7PG1523-1*C3 2 B B M M M M 7PG1523-1*D3 3 B B M B M M 7PG1523-1*E3 4 B B M B B M Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact. Note: Contact pairings 5-7 and are always make contacts, they are therefore shown this way on Figure Siemens Protection Devices Limited Chapter 4 Page 26 of 46

105 TR High Speed Tripping Relay PG1523-1**6 (TR contact) PG (TR 231) 10 Contact R1 and R3 Values VDC R1 R2 24 Not fitted Not fitted 30 Not fitted Not fitted x 100R in series Not fitted = PR +ve 27 RL1-A R1 RL1-A RL1-B RL1 -ve 28 RESET +ve 25 RL1-B RESET SOLENOID R2 -ve 26 Figure 2-20 functional Diagram: 7PG1523-1**6 (TR231) Table 2-19 Contact Terminal Numbers (10 contact) Relay Type Relay Type TR 231 (Max No of B contacts) Epsilon Case Terminal Numbers PG1523-1*A6 0 M M M M M M M M M M 7PG1523-1*B6 1 M B M M M M M M M M 7PG1523-1*C6 2 B B M M M M M M M M 7PG1523-1*D6 3 B B M B M M M M M M 7PG1523-1*E6 4 B B B B M M M M M M 7PG1523-1*F6 5 B B B B M B M M M M 7PG1523-1*G6 6 B B M B M M B B B M 7PG1523-1*H6 7 B B B B M M B B B M 7PG1523-1*J6 8 B B B B M B B B B M Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact. Note: Contact pairings 9-11 and are always make contacts, they are therefore shown this way on Figure Siemens 2013 Siemens Protection Devices Limited Chapter 4 Page 27 of 46

106 TR High Speed Tripping Relay PG (TR233) This is a high burden trip relay with a 40/60ms delay before cut off. It is reset electrically. This relay can be specified with either 6 or 10 user available contacts. RL1 and RL2 are energised together (in series) when the +ve is applied to terminal 27. The NO contact of RL2 closes providing an alternative supply path to RL1. The break contact of RL1 (RL1 A) opens causing the DC supply to be interrupted to RL2. RL2 has a time delayed (40/60ms) drop-off time. After this time delay has elapsed its NO contact re-opens and removes the supply from RL1. The relay is reset by applying volts across terminals pair 22 and 21 (6 Contact) or 25 and 26 (10 Contact). RL1-B will be closed from the operation of RL1, hence creating a path to energise the Reset Solenoid PG1523-3**3 (TR233 6 contact) PG (TR 233) 6 Contact R1 and R3 Values VDC R1 R2 24 Not fitted Not fitted 30 Not fitted Not fitted x 100R in series Not fitted = Not fitted Not fitted RL1A RL1-B -ve 28 RL1 A RL1 R1 RL2 T.D.D.O PR +ve RESET RESET RL1-B SOLENOID R2 22 Figure 2-21 functional Diagram: 7PG1523-3**3 (TR233) Table 2-20 Contact Terminal Numbers (6 contact) Relay type Relay Type TR 223 (Max No of B Epsilon Case Terminal Numbers contacts) PG1523-3*A3 0 M M M M M M 7PG1523-3*B3 1 M B M M M M 7PG1523-3*C3 2 B B M M M M 7PG1523-3*D3 3 B B B M M M 7PG1523-3*E3 4 B B B M B M Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact. Note: Contact pairings 6-8 and are always make contacts, they are therefore shown this way on Figure Siemens Protection Devices Limited Chapter 4 Page 28 of 46

107 TR High Speed Tripping Relay PG1523-3**6 (TR contact) PG (TR 233) 10 Contact Table 2-4: R1 and R3 Values VDC R1 R2 24 Not fitted Not fitted 30 Not fitted Not fitted x 100R in series Not fitted = Not fitted Not fitted RL1A RL1-B -ve 28 RL1 A RL1 R1 RL2 T.D.D.O PR +ve 27 RESET +ve 25 RESET RL1-B SOLENOID R2 -ve 26 Figure 2-22 functional Diagram: 7PG1523-3**6 (TR233) Table 2-21 Contact Terminal Numbers (10 contact) Relay Type Relay Type TR 233 (Max No of B contacts) Epsilon Case Terminal Numbers PG1523-3*A6 0 M M M M M M M M M M 7PG1523-3*B6 1 M B M M M M M M M M 7PG1523-3*C6 2 B B M M M M M M M M 7PG1523-3*D6 3 B B M B M M M M M M 7PG1523-3*E6 4 B B B B M M M M M M 7PG1523-3*F6 5 B B B B M B M M M M 7PG1523-3*G6 6 B B M B M M B B B M 7PG1523-3*H6 7 B B B B M M B B B M 7PG1523-3*J6 8 B B B B M B B B B M Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact. Note: Contact pairings 9-11 and are always make contacts, they are therefore shown this way on Figure Siemens 2013 Siemens Protection Devices Limited Chapter 4 Page 29 of 46

108 TR High Speed Tripping Relay PG (TR241) This is a high burden trip relay which is instantaneously cut off and reset either electrically or by hand. This relay can be specified with either 6 or 10 user available contacts. Operation of protection contact PR causes RL1 to operate. The operation of RL1 causes RL1-A to break therefore removing the supply to RL1 instantaneously. The relay is reset by applying volts across terminals 22 and 21 (6 Contact) or 25 and 26 (10 Contact). RL1-B will be closed from the operation of RL1, hence creating a path to energise the Reset Solenoid PG1524-1**3 (TR241 6 contact) PG (TR 241) 6 Contact Table 2-4: R1 and R3 Values VDC R1 R2 24 Not fitted Not fitted 30 Not fitted x 100R in series Not fitted = PR +ve 27 RL1-A R1 RL1-A RL1-B RL1 -ve 28 RESET +ve 21 RL1-B RESET SOLENOID R2 -ve 22 Figure 2-23 functional Diagram: 7PG1524-1**3 (TR241) Table 2-22 Contact Terminal Numbers (6 contact) Relay type Relay Type TR 241 (Max No of B Epsilon Case Terminal Numbers contacts) PG1524-1*A3 0 M M M M M M 7PG1524-1*B3 1 M B M M M M 7PG1524-1*C3 2 B B M M M M 7PG1524-1*D3 3 B B M B M M 7PG1524-1*E3 4 B B M B B M Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact. Note: Contact pairings 5-7 and are always make contacts, they are therefore shown this way on Figure Siemens Protection Devices Limited Chapter 4 Page 30 of 46

109 TR High Speed Tripping Relay PG1524-1**6 (TR contact) PG (TR 241) 10 Contact Table 2-4: R1 and R3 Values VDC R1 R2 24 Not fitted Not fitted 30 Not fitted x 100R in series Not fitted = PR +ve 27 RL1-A R1 RL1-A RL1-B RL1 -ve 28 RESET +ve 25 RL1-B RESET SOLENOID R2 -ve 26 Figure 2-24 functional Diagram: 7PG1524-1**6 (TR241) Table 2-23 Contact Terminal Numbers (10 contact) Relay Type Relay Type TR 241 (Max No of B contacts) Epsilon Case Terminal Numbers PG1524-1*A6 0 M M M M M M M M M M 7PG1524-1*B6 1 M B M M M M M M M M 7PG1524-1*C6 2 B B M M M M M M M M 7PG1524-1*D6 3 B B M B M M M M M M 7PG1524-1*E6 4 B B B B M M M M M M 7PG1524-1*F6 5 B B B B M B M M M M 7PG1524-1*G6 6 B B M B M M B B B M 7PG1524-1*H6 7 B B B B M M B B B M 7PG1524-1*J6 8 B B B B M B B B B M Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact. Note: Contact pairing 9-11 and are is always make a contact, it is therefore shown this way on Figure Siemens 2013 Siemens Protection Devices Limited Chapter 4 Page 31 of 46

110 TR High Speed Tripping Relay PG TR243 This is a high burden trip relay with a 40/60ms delay before cut off. It is reset either electrically or by hand. This relay can be specified with either 6 or 10 user available contacts. RL1 and RL2 are energised together (in series) when the +ve is applied to terminal 27. The NO contact of RL2 closes providing an alternative supply path to RL1. The break contact of RL1 opens causing the DC supply to be interrupted to RL2. RL2 has a time delayed (40/60ms) drop-off time. After this time delay has elapsed its NO contact re-opens and removes the supply from RL1. The relay is reset by applying volts across terminals 22 and 21 (6 Contact) or 25 and 26 (10 Contact). RL1-B will be closed from the operation of RL1, hence creating a path to energise the Reset Solenoid PG1524-3**3 (TR243 6 contact) PG (TR 243) 6 Contact R1 and R3 Values VDC R1 R2 24 Not fitted Not fitted 30 Not fitted Not fitted x 100R in series Not fitted = Not fitted Not fitted RL1A RL1-B -ve 28 RL1 A RL1 R1 RL2 T.D.D.O PR +ve RESET RESET RL1-B SOLENOID R2 22 Figure 2-25 functional Diagram: 7PG1524-3**3 (TR243) Table 2-24 Contact Terminal Numbers (6 contact) Relay type Relay Type TR 243 (Max No of B Epsilon Case Terminal Numbers contacts) PG1524-3*A3 0 M M M M M M 7PG1524-3*B3 1 M B M M M M 7PG1524-3*C3 2 B B M M M M 7PG1524-3*D3 3 B B B M M M 7PG1524-3*E3 4 B B B M B M Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact. Note: Contact pairings 6-8 and are always make contacts, they are therefore shown this way on Figure Siemens Protection Devices Limited Chapter 4 Page 32 of 46

111 TR High Speed Tripping Relay PG1524-3**6 (TR contact) PG (TR 243) 10 Contact R1 and R3 Values VDC R1 R2 24 Not fitted Not fitted 30 Not fitted Not fitted x 100R in series Not fitted = Not fitted Not fitted RL1A RL1-B -ve 28 RL1 A RL1 R1 RL2 T.D.D.O PR +ve 27 RESET +ve 25 RESET RL1-B SOLENOID R2 -ve 26 Figure 2-26 functional Diagram: 7PG1524-3**6 (TR243) Table 2-25 Contact Terminal Numbers (10 contact) Relay Type Relay Type TR 243 (Max No of B contacts) Epsilon Case Terminal Numbers PG1524-3*A6 0 M M M M M M M M M M 7PG1524-3*B6 1 M B M M M M M M M M 7PG1524-3*C6 2 B B M M M M M M M M 7PG1524-3*D6 3 B B M B M M M M M M 7PG1524-3*E6 4 B B B B M M M M M M 7PG1524-3*F6 5 B B B B M B M M M M 7PG1524-3*G6 6 B B M B M M B B B M 7PG1524-3*H6 7 B B B B M M B B B M 7PG1524-3*J6 8 B B B B M B B B B M Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact. Note: Contact pairings 9-11 and are always make contacts, they are therefore shown this way on Figure Siemens 2013 Siemens Protection Devices Limited Chapter 4 Page 33 of 46

112 TR High Speed Tripping Relay 2.3 Specific Variant Relays PG (TR431) This is a low burden switching relay with an instantaneous cut off. It is reset electrically. This relay can be specified with either 7 or 8 user available contacts. The relay is powered by a 50V DC / 125V DC supply. Output connection 28 and 26 are used with R5 and R6 to allow for a 50V supply, as shown in Figure Output connection 24 and 22 are used to allow for a 125V supply. The flag displays a label reading Out when RL1 is energised and In when RL1 is reset. RL1 operates when the out contact makes, this causes the output contacts to change state and RL1-A to break and RL1-B to make. When RL1-A breaks the operating coil is cut off. When RL1-B makes, this allows the output contacts to be reset when the in contact makes. The relay is used to switch in and out Protection and Auto Reclose circuits. It is AC immune to allow use with long cross site cables PG1543-1**403CN (TR431 7 contact) TR 431 Resistor values R1 150 R2 1K R3 220 R4 820 R5 3K7 R6 2K3 Figure 2-27 functional Diagram: 7PG1543-1**403CN (TR431) Table 2-26 Contact Terminal Numbers (7 contact) Relay type Relay Type TR 431 (Max No of B Epsilon Case Terminal Numbers contacts) PG1543-1HA40-3CN0 0 M M M M M M M 7PG1543-1GB40-3CN0 1 M B M M M M M 7PG1543-1FC40-3CN0 2 B B M M M M M 7PG1543-1ED40-3CN0 3 B B M B M M M 7PG1543-1DE40-3CN0 4 B B B B M M M 7PG1543-1CF40-3CN0 5 B B M M B B B 7PG1543-1BG40-3CN0 6 B B M B B B B 7PG1543-1AH40-3CN0 7 B B B B B B B Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact Siemens Protection Devices Limited Chapter 4 Page 34 of 46

113 TR High Speed Tripping Relay PG1543-1**503CN (TR431 8 contact) TR 431 Resistor values R1 150 R2 1K R3 220 R4 820 R5 3K7 R6 2K3 Figure 2-28 functional Diagram: 7PG1543-1**403CN (TR431) Table 2-27 Contact Terminal Numbers (7 contact) Relay type Relay Type TR 431 (Max No of B Epsilon Case Terminal Numbers contacts) PG1543-1JA503CN 0 M M M M M M M M 7PG1543-1HB503CN 1 M B M M M M M M 7PG1543-1GC503CN 2 B B M M M M M M 7PG1543-1FD503CN 3 B B M B M M M M 7PG1543-1EE503CN 4 B B B B M M M B 7PG1543-1DF503CN 5 B B M M B B B M 7PG1543-1CG503CN 6 B B M B B B B M 7PG1543-1BH503CN 7 B B B B B B B M Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact. Siemens 2013 Siemens Protection Devices Limited Chapter 4 Page 35 of 46

114 TR High Speed Tripping Relay PG (TR901) This is a high burden plant follower relay with an instantaneous cut off. It is reset electrically. This relay is specified with 10 user available contacts. The relay is powered from either a 50V DC or 125V DC supply. The flag displays a label reading closed when RL1 operates and open when RL1 is reset. RL1 operates when the protection contact makes, this causes the output contacts to change state and RL1-A to break and RL1-B to make. When RL1-A breaks the operating coil is cut off. When RL1-B makes, this allows the output contacts to be reset when the reset contact makes. The relay is used to provide additional contacts for items of plant with insufficient auxiliary contacts PG1563-1**603A* (TR contact) TR 901 Resistor values Supply Voltage R1 R2 50V DC V DC 200 N/A Figure 2-29 functional Diagram: 7PG1563-1**603A* (TR901) Table 2-28 Contact Terminal Numbers (10 contact) Relay type Relay Type TR 901 (Max No of B contacts) Epsilon Case Terminal Numbers PG1563-1LA603A* 0 M M M M M M M M M M 7PG1563-1KB603A* 1 M B M M M M M M M M 7PG1563-1JC603A* 2 B B M M M M M M M M 7PG1563-1HD603A* 3 B B M B M M M M M M 7PG1563-1GE603A* 4 B B B B M M M M M M 7PG1563-1FF603A* 5 B B B B M B M M M M 7PG1563-1EG603A* 6 B B M B M M B B B M 7PG1563-1DH603A* 7 B B B B M M B B B M 7PG1563-1CJ603A* 8 B B B B M B B B B M Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact Siemens Protection Devices Limited Chapter 4 Page 36 of 46

115 TR High Speed Tripping Relay 3 Performance Specification Technical Information PG151 (TR1) Rated Voltage Vn (DC) Operating range Operating time 24 V 30 V 50 V 60 V 125 V 240 V 50% to 120% of Vn 10ms at Vn Note: 24V and 240V ratings are not part of ESI PG152 (TR2) Rated Voltage Vn (DC) Operating range Operating time 24 V 30 V 50 V 125 V 240 V 50% to 120% of Vn 10ms at Vn Note: 24V and 240V ratings are not part of ESI 48-4 Operating coils of self-reset and economy cut-off relays are rated at 120% of rated voltage. All other operate and reset coils are short time rated well in excess of the operating time of their cut-off contacts. Self-reset relays will reset at not less than 5% rated voltage Nominal Burdens Table 3-1: Nominal Burdens Rated Voltage (V DC) Nominal Burden to Operate (W) TR1 series TR2 series Self Reset relays only, Burden (W) after operation of economy circuit Reset Coil Nominal Burden Note: Other ratings have proportionally similar burdens. Siemens 2013 Siemens Protection Devices Limited Chapter 4 Page 37 of 46

116 TR High Speed Tripping Relay Contacts Attribute Make and Carry continuously Make and carry for 3 seconds Break Contact Operate / Release Time Minimum number of operations Value 1250VAa.c. or 1250Wd.c. within limits of 660V and 5A 7500VAa.c. or 7500Wd.c. within limits of 660V and 30A 1250VAa.c. or 100W (resistive) d.c. or 50W (inductive) d.c. within limits of 250V and 5A 7ms / 3ms 10,000 operations, within the maximum contact loading specified Indication 7PG151 (TR1) and 7PG152 (TR2) relays have a hand reset mechanical flag indicator. 3.2 Environmental Temperature IEC68-2-1/2 and BS2011(1977) Humidity IEC Vibration Shock and bump Operating -10 C to +55 C 56 days at 95% RH and 40 C IEC Class l. IEC and BS142, (1989) Storage -25 C to +70 C Relays meet the requirements with respect to shock and bump testing for Class 1 severity. 3.3 Insulation 7PG151 and 7PG152 Relays will withstand: 5kV 1.2/50µs waveform as IEC kV rms 50Hz for 1minute (2.5kV for 1s) between all terminals and earth 1kV rms 50Hz for 1 minute across normally open contacts to IEC and BS Siemens Protection Devices Limited Chapter 4 Page 38 of 46

117 TR High Speed Tripping Relay 4 Installation 4.1 Unpacking, Storage and Handling On receipt remove the relay from the container in which it was received and inspect it for obvious damage. It is recommended that the relay not be removed from its case. If damage has been sustained a claim should be immediately be made against the carrier, also inform Siemens Protection Devices Limited, and the nearest Siemens agent. When not required for immediate use, the relay should be returned to its original carton and stored in a clean, dry place. The relay contains static sensitive devices, which are susceptible to damage due to static discharge. The relay s electronic circuits are protected from damage by static discharge when the relay is housed in its case. There can be no requirement to disassemble any relay, since there are no user serviceable parts in the relay. If any modules have been tampered with, then the guarantee will be invalidated. Siemens Protection Devices Limited reserves the right to charge for any subsequent repairs. 4.2 Wiring The product should be wired according to the scheme requirements, with reference to the appropriate wiring diagram. 4.3 Front Cover The front cover provides additional securing of the relay element within the case. The relay cover should be in place during normal operating conditions. 4.4 Fixings Crimps Ring tongued crimps with 90 bend are recommended Panel Fixings Typical mounting screw kit per Relay consists of: 4 M4x10mm Screws 4 M4 Nuts 4 M4 Lock Washers Typical rear terminal block fixing kit (1kit per terminal block fitted to relay) Consists of: 28 M4, 8mm Screws 28 M4 Lock Washer Siemens 2013 Siemens Protection Devices Limited Chapter 4 Page 39 of 46

118 TR High Speed Tripping Relay 4.5 Relay Dimensions and Panel Fixings Relays are supplied in either the E2 or E4 epsilon cases E2 Case Dimensions mm 13.5 mm 150 mm 44 mm 51.5 mm 150 mm mm 177 mm Side view of E2 case Front view of E2 case Front view of E2 front cover Side view of E2 case with front cover attached E2 Terminal Numbering Viewed from Rear 2013 Siemens Protection Devices Limited Chapter 4 Page 40 of 46

119 TR High Speed Tripping Relay E4 Case Dimensions mm 13.5 mm 150 mm 96 mm mm 150 mm mm 177 mm Side view of E4 case Front view of E4 case Front view of E4 front cover RH-element LH-element Side view of E4 case with front cover attached E4 Terminal Numbering Viewed from Rear Siemens 2013 Siemens Protection Devices Limited Chapter 4 Page 41 of 46

120 TR High Speed Tripping Relay 5 Maintenance 5.1 Safety The commissioning and future maintenance of this equipment should only be carried out by skilled personnel trained in protective relay operation and capable of observing all the necessary safety precautions and regulations appropriate to this equipment and also the associated primary plant. Equipment should be isolated from auxiliary supplies and the circuit breaker trip circuit prior to commencing any work on an installed product. 5.2 Unpacking, Handling and Storage On receipt unpack the relay and inspect for any obvious damage. If damage has been sustained a claim should immediately be made against the carrier, also inform Siemens and the nearest Siemens agent. When not immediately required, return the relay to it s carton and store in a clean, dry place. 5.3 Preliminary Tests Check that the relay operating voltage (and reset voltage if a reset coil is fitted) are correct for the auxiliary voltage to be used. In some instances relays are to be used with the coil in a series with a voltage dropper resistor, this is advised on the Order Acknowledgement and shown on the relay label as +Ext R, suitable resistors are supplied with the relay, ensure that such resistors are mounted vertical, and secure and wired to the correct relay coil. Isolate from the auxiliary supply(s) by removing fuses and line as necessary. Physically check the wiring to the relay terminals for security and prove that it is wired correctly to the circuit schematic wiring diagrams. 5.4 Mechanical Settings It should not be necessary to adjust settings during routine tests unless parts have been replaced or other repairs carried out. Adjustment of one setting will often influence another, therefore all settings must be checked after the final adjustment. 5.5 Contacts Contact tips are fine silver on copper and should only be burnished if any pitting has occurred. Contact pressures are set by gentle pressure with contact setting pliers near to the contact stack assembly, during this operation avoid putting any stress on the contact actuating comb. Contact pressures should be measured using an accurate gram gauge at the tip of the contact leaf Siemens Protection Devices Limited Chapter 4 Page 42 of 46

121 TR High Speed Tripping Relay 6 Applications 6.1 D.C. Circuit Diagram 400KV Mesh Substation 27 TR 231 RL1 28 DC SUPPLY +VE Over Current Inverse Time Protection Relay Over Current Protection Relay HV Transformer Disconnector 27 TR 231 RL1 28 User Available Output Contacts DC SUPPLY -VE 10 Sec Timing Relay User Available Output Contacts System Back-Up Protection First Main Feeder Protection First Intertrip Recieve Mesh Corner Protection Zone 1 LV Transformer Disconnector HV Relay Panel XR 152 LV Relay Panel 13 RL TR 212 User Available Output Contacts 27 RL1 28 LV Busbar Protection User Available Output Contacts Figure 6-1 Applications Diagram: 400 KV Mesh Substation Figure 6-1 shows an over current protection relay in a 400KV mesh substation scheme. There are various alpha relays incorporated in this scheme. The XR 152 is used to provide DC supply supervision. The two TR 231 relays are used to send signals relating to the HV side of the scheme. The TR 212 is used to send signals relating to the LV side of the scheme. Siemens 2013 Siemens Protection Devices Limited Chapter 4 Page 43 of 46

122 TR High Speed Tripping Relay 6.2 TR 901 Plant Follower scheme Figure 6-2 Applications Diagram: 7PG (TR 901) Figure 6-2 shows the TR 901 in a plant follower scheme. The TR 901 is used to produce additional contacts for items of plant where insufficient contacts exist Siemens Protection Devices Limited Chapter 4 Page 44 of 46

123 TR High Speed Tripping Relay 6.3 TR KV Mesh Substation Scheme XR RL1 14 DC SUPPLY +VE MESH CORNER PROTECTION 27 TR 231 RL1 28 DC SUPPLY -VE FIRST INTERTRIP SEND SECOND INTERTRIP SEND ACCEL OR UNSTABLE FIRST MAIN FEEDER PROTECTION ACCEL OR UNSTABLE SECOND MAIN FEEDER PROTECTION ALARM SUPPLY +VE TRIP RELAY AUTO RESET * FAULT RECORDER FEEDER END PROTECTION TRIP RELAY FEEDER END PROTECTION EVENT LOGGING MESSAGES FEEDER END PROTECTION DC SUPPLY FAIL Figure 6-3 Applications Diagram: 7PG (TR 231) Figure 6-3 shows a TR 231 in use with a mesh corner protection relay, the relay is used to send messages and initiate other parts of the mesh protection. * The TR 231 is an electrically reset relay. A trip relay auto reset scheme and description can be found in the AR chapter 6.1. The XR 152 is used to provide supply supervision, a scheme and description can be found in the XR manual section chapter 6.2 Siemens 2013 Siemens Protection Devices Limited Chapter 4 Page 45 of 46

124 TR High Speed Tripping Relay 2013 Siemens Protection Devices Limited Chapter 4 Page 46 of 46

125 TR-A High Speed Tripping Relay 7PG18 TR-A Relays High Speed Tripping Relay Document Release History This document is issue The list of revisions up to and including this issue is: 2013 First Issue Siemens 2013 Siemens Protection Devices Limited Chapter 5 Page 1 of 14

126 TR-A High Speed Tripping Relay Contents 1 Introduction High Burden, 7PG182 (TR2) series Contact Reset Self Reset Hand Reset Electrical Reset Hand and Electrical Reset Flag Reset Hand Reset Operate Coil Cut Off Economy Instantaneous Time Delay Cut Off Description PG (TR-A212) PG (TR-A214) PG (TR-A221) PG (TR-A223) PG (TR-A231) PG (TR-A233) PG (TR-A241) PG (TR-A243) Performance Specification...9 Technical Information PG182 (TR2) Nominal Burdens...9 Table 3-1: Nominal Burdens Contacts Indication Environmental Insulation Installation Unpacking, Storage and Handling Wiring Front Cover Fixings Crimps Panel Fixings Relay Dimensions and Panel Fixings E4 TR-A Case Dimensions Maintenance Safety Preliminary Tests Mechanical Settings Contacts Applications Siemens Protection Devices Limited Chapter 5 Page 2 of 14

127 TR-A High Speed Tripping Relay List of Tables Table 1-1 Numbering of Relay Features...4 Table 1-2 Relay Burden Features...4 Table 1-3 Relay Features...5 Siemens 2013 Siemens Protection Devices Limited Chapter 5 Page 3 of 14

128 TR-A High Speed Tripping Relay 1 Introduction This manual is applicable to the following relays: 7PG (TR-A 212) 7PG (TR-A 214) 7PG (TR-A 221) 7PG (TR-A 223) 7PG (TR-A 231) 7PG (TR-A 233) 7PG (TR-A 241) 7PG (TR-A 243) Type 7PG18 relays are a range of 20 contact attracted armature, high burden relays. They are designed to comply with both IEC and to BS142. A wide range of models are available to meet the requirements of the electric supply industry. These high speed, positive action relays are supplied in an epsilon case. The relays incorporate a hand reset operation indicator flag. Table 1-1 Numbering of Relay Features First Digit Second Digit Type of Reset Third Digit Operating Coil Cut Off 2 High Burden 1 Self Reset 1 Instantaneous 2 Hand reset 2 Economy 3 Electrical Reset 3 Time delay 4 Hand and Electrical Reset 4 Time delay economy 1.1 High Burden, 7PG182 (TR2) series A High Burden TR relay is normally utilised for tripping applications with single pole switched trip initiations. A High Burden TR relay must comply with the requirements specified in Table 1-2 Relay Burden Features. Type 7PG152 (TR2) have a high burden, this ensures immunity to capacitance discharge currents. The capacitance discharge currents can arise on substation battery circuits if an earth fault occurs on the battery wiring. They are also suitable for certain applications where they are remote from the initiation signal. A high burden also permits reliable operation of current operated series repeat relays. After operation of the relay the high burden is automatically either switched out or reduced to a low economy level. This switch out can be either instantaneous or time delayed. (This is displayed in Table 1-3 Relay Features.) Table 1-2 Relay Burden Features Rating Class High Burden Low Burden Power Consumption < 150W and within 30 ms after operation <20W < 100W Minimum Operating Current > 50mA >25mA Minimum Operating Current for 48V & 30V 20mA 10mA Relays Capacitive Discharge Immunity Only required on 110V and 48V TR relays Not required 2013 Siemens Protection Devices Limited Chapter 5 Page 4 of 14

129 TR-A High Speed Tripping Relay Table 1-3 Relay Features MLFB Code Relay Type Number of Contacts Contact Reset Arrangement Operating Coil Cut-off Specification Burden level Modular Case Size 7PG TR-A Self Economy EB2 High E4 7PG TR-A Self (2s Delay) Economy 2s relay EB2 High E4 reset delay 7PG TR-A Hand Instantaneous EB2 High E4 7PG TR-A Hand 40/60ms delay EB2 High E4 7PG TR-A Electrical Instantaneous EB2 High E4 7PG TR-A Electrical 40/60ms delay EB2 High E4 7PG TR-A Hand & Electrical Instantaneous EB2 High E4 7PG TR-A Hand & Electrical 40/60ms delay EB2 High E4 1.2 Contact Reset Self Reset The output contacts of self reset relays are held in the operate position whilst the relay operate coil is energised Hand Reset The contacts of hand reset relays are held in the operated position by a mechanical latch which is released by the cover mounted reset Electrical Reset The contacts of electrically reset relays are held in the operated position by a mechanical latch which is released by energising the reset coil Hand and Electrical Reset Hand and electrical reset models can have the main contacts reset either by hand as explained in or electrically as explained in Flag Reset Hand Reset When the relay operate coil is energised, the flag indicator is displayed. The indicator remains visible until it is reset by a mechanical lever operated by hand from the front cover of the relay. 1.4 Operate Coil Cut Off Economy After initial operation the burden of the relay automatically reduced to a low economy level Instantaneous After initial operation the burden of the relay automatically switches out. An internal heavy duty contact is arranged to open circuit the operate coil when operated. Siemens 2013 Siemens Protection Devices Limited Chapter 5 Page 5 of 14

130 TR-A High Speed Tripping Relay Time Delay Cut Off Where instantaneous cut-off relays are utilised a normally closed contact opens the operating coil circuit and so the burden is reduced to zero instantaneously. A time delay circuit has been introduced on various 7PG18 variants for occasions where another series operating element requires a longer operating time Siemens Protection Devices Limited Chapter 5 Page 6 of 14

131 TR-A High Speed Tripping Relay 2 Description PG (TR-A212) This relay performs electrically in exactly the same way as the 7PG (TR 212). The 7PG (TR-A 212) provides 20 output contacts. The relay incorporates a hand reset operation indicator flag. The 20 output contacts can be specified in any variation of Break (Normally Closed) and Make (Normally Open) For a description of operation see in the TR chapter of the manual PG (TR-A214) This relay performs electrically in exactly the same way as the 7PG (TR 214). The 7PG (TR-A 214) provides 20 output contacts. The relay incorporates a hand reset operation indicator flag. The 20 output contacts can be specified in any variation of Break (Normally Closed) and Make (Normally Open) For a description of operation see in the TR chapter of the manual PG (TR-A221) This relay performs electrically in exactly the same way as the 7PG (TR 221). The 7PG (TR-A 221) provides 20 output contacts. The relay incorporates a hand reset operation indicator flag. The 20 output contacts can be specified in any variation of Break (Normally Closed) and Make (Normally Open) The output contacts of the relay are reset by hand. For a description of operation see in the TR chapter of the manual PG (TR-A223) This relay performs electrically in exactly the same way as the 7PG (TR 223). The 7PG (TR-A 223) provides 20 output contacts. The relay incorporates a hand reset operation indicator flag. The 20 output contacts can be specified in any variation of Break (Normally Closed) and Make (Normally Open) The output contacts of the relay are reset by hand. For a description of operation see in the TR chapter of the manual. Siemens 2013 Siemens Protection Devices Limited Chapter 5 Page 7 of 14

132 TR-A High Speed Tripping Relay PG (TR-A231) This relay performs electrically in exactly the same way as the 7PG (TR 231). The 7PG (TR-A 231) provides 20 output contacts. The relay incorporates a hand reset operation indicator flag. The 20 output contacts can be specified in any variation of Break (Normally Closed) and Make (Normally Open) The output contacts of the relay are electrically reset. For a description of operation see in the TR chapter of the manual PG (TR-A233) This relay performs electrically in exactly the same way as the 7PG (TR 233). The 7PG (TR-A 233) provides 20 output contacts. The relay incorporates a hand reset operation indicator flag. The 20 output contacts can be specified in any variation of Break (Normally Closed) and Make (Normally Open) The output contacts of the relay are electrically reset. For a description of operation see in the TR chapter of the manual PG (TR-A241) This relay performs electrically in exactly the same way as the 7PG (TR 241). The 7PG (TR-A 241) provides 20 output contacts. The relay incorporates a hand reset operation indicator flag. The 20 output contacts can be specified in any variation of Break (Normally Closed) and Make (Normally Open) The output contacts of the relay are electrically reset and hand reset. For a description of operation see in the TR chapter of the manual PG (TR-A243) This relay performs electrically in exactly the same way as the 7PG (TR 243). The 7PG (TR-A 243) provides 20 output contacts. The relay incorporates a hand reset operation indicator flag. The 20 output contacts can be specified in any variation of Break (Normally Closed) and Make (Normally Open) The output contacts of the relay are electrically reset and hand reset. For a description of operation see in the TR chapter of the manual Siemens Protection Devices Limited Chapter 5 Page 8 of 14

133 TR-A High Speed Tripping Relay 3 Performance Specification Technical Information PG182 (TR2) Rated Voltage Vn (DC) Operating range Operating time 24 V 30 V 50 V 125 V 240 V 50% to 120% of Vn 12.5ms at Vn Note: 24V and 240V ratings are not part of ESI 48-4 Operating coils of self-reset and economy cut-off relays are rated at 120% of rated voltage. All other operate and reset coils are short time rated well in excess of the operating time of their cut-off contacts. Self-reset relays will reset at not less than 5% rated voltage Nominal Burdens Table 3-1: Nominal Burdens Rated Voltage (V DC) Nominal Burden to Operate (W) TR-A2 series Self Reset relays only, Burden (W) after operation of economy circuit < Reset Coil 50 Nominal Burden Note: Other ratings have proportionally similar burdens Contacts Attribute Make and Carry continuously Make and carry for 3 seconds Break Contact Operate / Release Time Minimum number of operations Value 1250VAa.c. or 1250Wd.c. within limits of 660V and 5A 7500VAa.c. or 7500Wd.c. within limits of 660V and 30A 1250VAa.c. or 100W (resistive) d.c. or 50W (inductive) d.c. within limits of 250V and 5A 7ms / 3ms 10,000 operations, within the maximum contact loading specified Indication 7PG182 (TR-A2) relays have a hand reset mechanical flag indicator. Siemens 2013 Siemens Protection Devices Limited Chapter 5 Page 9 of 14

134 TR-A High Speed Tripping Relay 3.2 Environmental Temperature IEC68-2-1/2 and BS2011(1977) Humidity IEC Vibration Shock and bump Operating -10 C to +55 C 56 days at 95% RH and 40 C IEC Class l. IEC and BS142, (1989) Storage -25 C to +70 C Relays meet the requirements with respect to shock and bump testing for Class 1 severity. 3.3 Insulation 7PG151 and 7PG152 Relays will withstand: 5kV 1.2/50µs waveform as IEC kV rms 50Hz for 1minute (2.5kV for 1s) between all terminals and earth 1kV rms 50Hz for 1 minute across normally open contacts to IEC and BS Siemens Protection Devices Limited Chapter 5 Page 10 of 14

135 TR-A High Speed Tripping Relay 4 Installation 4.1 Unpacking, Storage and Handling On receipt remove the relay from the container in which it was received and inspect it for obvious damage. It is recommended that the relay not be removed from its case. If damage has been sustained a claim should be immediately be made against the carrier, also inform Siemens Protection Devices Limited, and the nearest Siemens agent. When not required for immediate use, the relay should be returned to its original carton and stored in a clean, dry place. The relay contains static sensitive devices, which are susceptible to damage due to static discharge. The relay s electronic circuits are protected from damage by static discharge when the relay is housed in its case. There can be no requirement to disassemble any relay, since there are no user serviceable parts in the relay. If any modules have been tampered with, then the guarantee will be invalidated. Siemens Protection Devices Limited reserves the right to charge for any subsequent repairs. 4.2 Wiring The product should be wired according to the scheme requirements, with reference to the appropriate wiring diagram. 4.3 Front Cover The front cover provides additional securing of the relay element within the case. The relay cover should be in place during normal operating conditions. 4.4 Fixings Crimps Ring tongued crimps with 90 bend are recommended Panel Fixings Typical mounting screw kit per Relay consists of: 4 M4x10mm Screws 4 M4 Nuts 4 M4 Lock Washers Typical rear terminal block fixing kit (1kit per terminal block fitted to relay) Consists of: 28 M4, 8mm Screws 28 M4 Lock Washer Siemens 2013 Siemens Protection Devices Limited Chapter 5 Page 11 of 14

136 TR-A High Speed Tripping Relay 4.5 Relay Dimensions and Panel Fixings Relays are supplied in epsilon E4 case E4 TR-A Case Dimensions mm 13.5 mm 150 mm 96 mm mm 150 mm mm 177 mm Side view of E4 TR-A case Front view of E4 TR-A case Front view of E4 TR-A front cover RH-element LH-element Side view of E4 TR-A case with front cover attached E4 TR-A Terminal Numbering Viewed from Rear 2013 Siemens Protection Devices Limited Chapter 5 Page 12 of 14

137 TR-A High Speed Tripping Relay 5 Maintenance 5.1 Safety The commissioning and future maintenance of this equipment should only be carried out by skilled personnel trained in protective relay operation and capable of observing all the necessary safety precautions and regulations appropriate to this equipment and also the associated primary plant. Equipment should be isolated from auxiliary supplies and the circuit breaker trip circuit prior to commencing any work on an installed product. 5.2 Preliminary Tests Check that the relay operating voltage (and reset voltage if a reset coil is fitted) are correct for the auxiliary voltage to be used. In some instances relays are to be used with the coil in a series with a voltage dropper resistor, this is advised on the Order Acknowledgement and shown on the relay label as +Ext R, suitable resistors are supplied with the relay, ensure that such resistors are mounted vertical, and secure and wired to the correct relay coil. Isolate from the auxiliary supply(s) by removing fuses and links as necessary. Physically check the wiring to the relay terminals for security and prove that it is wired correctly to the circuit schematic wiring diagrams. 5.3 Mechanical Settings It should not be necessary to adjust settings during routine tests unless parts have been replaced or other repairs carried out. Adjustment of one setting will often influence another, therefore all settings must be checked after the final adjustment. 5.4 Contacts Contact tips are fine silver on copper and should only be burnished if any pitting has occurred. Contact pressures are set by gentle pressure with contact setting pliers near to the contact stack assembly, during this operation avoid putting any stress on the contact actuating comb. Contact pressures should be measured using an accurate gram gauge at the tip of the contact leaf. 6 Applications See the applications section of the TR chapter. Siemens 2013 Siemens Protection Devices Limited Chapter 5 Page 13 of 14

138 TR-A High Speed Tripping Relay 2013 Siemens Protection Devices Limited Chapter 5 Page 14 of 14

139 VR Over and Under Voltage Relays 7PG16 VR Relays Over and Under Voltage Relays Document Release History This document is issue The list of revisions up to and including this issue is: 2013/4 First Issue Siemens 2013 Siemens Protection Devices Limited Chapter 6 Page 1 of 18

140 VR Over and Under Voltage Relays Contents 1 Introduction Voltage Rating Nominal voltage Vn Auxiliary voltage Vx Setting Voltage Vs Relay Numbering Contact Reset: Self Reset Description of Operation VR VR115 (2 Contact) Figure 2-1 Functional Diagram: VR115 (2 Contact) VR VR116 (6 Contact) Figure 2-2 Functional Diagram: VR116 (6 Contact) VR VR121 (2 Contact) Figure 2-3 Functional Diagram: VR121 (2 Contact) VR VR122 (6 Contact) Figure 2-4 Functional Diagram: VR122 (6 Contact) VR VR123 (2 Contact and 4 Contact) Figure 2-5 Functional Diagram: VR123 (2 Contact and 4 Contact) Performance Specification...11 Technical Information Contacts Indication Environmental Insulation Thermal Withstand (Continuous) Operating Time Installation Unpacking, Storage and Handling Wiring Front Cover Fixings Crimps Panel Fixings Relay Dimensions and Panel Fixings E2 Case Dimensions E4 Case Dimensions Maintenance Safety Preliminary Tests Mechanical Settings Contacts Applications VR 121/123 Nominal Supply under Voltage Relay...16 Figure 6-1 Applications Diagram: VR 121/ Siemens Protection Devices Limited Chapter 6 Page 2 of 18

141 VR Over and Under Voltage Relays 6.2 VR 115 Nominal Supply over voltage Relay...16 Figure 6-2 Applications Diagram: VR VR 122 Dual Supply under Voltage Relay...17 Figure 6-3 Applications Diagram: VR VR 116 Dual Supply over Voltage Relay...17 Figure 6-4 Applications Diagram: VR List of Figures Figure 2-1 Functional Diagram: VR115 (2 Contact)...6 Figure 2-2 Functional Diagram: VR116 (6 Contact)...7 Figure 2-3 Functional Diagram: VR121 (2 Contact)...8 Figure 2-4 Functional Diagram: VR122 (6 Contact)...9 Figure 2-5 Functional Diagram: VR123 (2 Contact and 4 Contact)...10 Figure 6-1 Applications Diagram: VR 121/ Figure 6-2 Applications Diagram: VR Figure 6-3 Applications Diagram: VR Figure 6-4 Applications Diagram: VR List of Tables Table 1-1 Model range and characteristics...5 Table 2-1 Contact Terminal Numbers (VR115)...6 Table 2-2 Contact Terminal Numbers (VR116)...7 Table 2-3 Contact Terminal Numbers (VR121)...8 Table 2-4 Contact Terminal Numbers (VR122)...9 Table 2-5 Contact Terminal Numbers (VR123)...10 Siemens 2013 Siemens Protection Devices Limited Chapter 6 Page 3 of 18

142 VR Over and Under Voltage Relays 1 Introduction This manual is applicable to the following relays: (VR115) (VR116) (VR121) (VR122) (VR123) Type VR relays use the same electro-mechanical assemblies as type AR relays but with the settings required for specific under/over voltage applications. Type VR relays have a consistent, positive action, a long service life and complies with BS 142. VR relays provide instantaneous under and over voltage detection for A.C. and D.C. operation. They are suitable for under and over voltage protection in conjunction with protection systems or other plant. They provide reliable operation and cover a wide range of settings. 1.1 Voltage Rating Nominal voltage Vn Vn is the voltage at which the operate coil in the relay is rated at. A.C. Ranges 50Hz or 60Hz D.C. Ranges 63.5V to 69.2V 24V to 27V 110V to 125V 220V to 250V 380V to 440V Auxiliary voltage Vx 30V to 34V 48V to 54V 110V to 125V 220V to 250V An Auxiliary voltage is required for the VR116 and the VR122. The operating range is 80% to 125% of the nominal voltage. This voltage is required to operate a second element used to provide more user available contacts. D.C. Auxiliary Voltage 24V 30V 48V 110V 220V A.C. Auxiliary Voltage 19V to 31V 24V to 38V 37V to 60V 87V to 138V 175V to 225V 2013 Siemens Protection Devices Limited Chapter 6 Page 4 of 18

143 VR Over and Under Voltage Relays Setting Voltage Vs The VR 123 is a variable setting relays, it has a plug bridge permitting selection drop-off voltage in 7 steps between 30% of Vn and 60% of Vn. Fixed setting relays have a factory-set operating voltage within the stated range. Vs is a percentage of Vn. For under voltage relays Vs will be a smaller value than Vn. Table 1-1 Model range and characteristics Model User Available contacts Setting Vs % Steps (Vn) No Value Burden at Vn (W or VA) Resetting Vs% (Vn) Pick-up drop-off ratio VR115 E2 Case 2 120% - 150% 0 Fixed < 50% <50% VR116 E4 Case 6 120% -150% 0 Fixed % - 135% 90% VR121 E2 Case 2 30% - 63% 0 Fixed % - 90% 33% - 74% VR122 E4 Case 6 62% - 81% 0 Fixed % - 90% 90% VR123 E4 Case 2 or 4 30% - 60% 7 5% % - 90% 33% - 74% Relay Numbering These relays are identified by the product designation VR and three numbers which define important relay features as follows: Note: The VR range of relays are not included in the MLFB ordering code. First digit Second digit Third digit Number of identical elements. Duty: 1= over voltage, 2= under voltage. Identifies specific models. 1.2 Contact Reset: Self Reset The VR range of relays all contain self reset contacts. Once the applied voltage rises above or falls below Vs (depending on over voltage relay or under voltage relay) the contacts change to there operate position. When the relay is reset (due to Vs becoming a certain percentage of Vn) the contacts return to there de-energised position. Siemens 2013 Siemens Protection Devices Limited Chapter 6 Page 5 of 18

144 VR Over and Under Voltage Relays 2 Description of Operation 2.1 VR 115 This VR Relay is specified with 2 user available contacts. The Relay can be powered from either an AC or DC supply (Vn). The range of Vn values available is listed in The VR 115 is an over voltage relay. RL1 is normally de-energised. When the voltage between pins 27 and 28 rises to 120% - 150% of Vn the coil is energised, the relay operates and the contacts change state. The contacts are held in this position until the voltage between pins 27 and 28 drops below 50% of Vn at which point they return to there normally de-energised state. An Applications diagram and explanation can be found in Applications There is a hand reset flag indicator on the front of the relay. It indicates upon energisation of RL VR115 (2 Contact) VR Contact C2 RL1 R2 C1 Link D2 D2 D2 V1 A D2 Link 28 Vn Vn 27 RT 1 R1 V Figure 2-1 Functional Diagram: VR115 (2 Contact) Note: Figure 2-1 shows the VR115 wired for A.C. applications. For D.C. applications C1, C2, D2*4, V1A and V2 are removed. Two wired links are added, they are shown as dotted lines in Figure 2-1. Figure 2-1 shows the VR115 in its de-energised state. Table 2-1 Contact Terminal Numbers (VR115) Relay Type Relay Type VR 115 (Max Number of B contacts) VR115 2M 0 M M VR115 1M 1B 1 M B Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact. Note: Contact paring 1-3 is always a make contact, it is therefore shown this way on Figure Siemens Protection Devices Limited Chapter 6 Page 6 of 18

145 VR Over and Under Voltage Relays 2.2 VR 116 This VR Relay is specified with 6 user available contacts. The Relay can be powered from either an AC or DC supply (Vn). The relay also requires an auxiliary supply (Vx) to drive the majority of the output contacts. The range of Vn values available is listed in The range of Vx values available is listed in The VR 116 is an over voltage relay. RL1 and RL2 are normally de-energised. When the voltage between pins 27 and 28 rises to 120% - 150% of Vn, RL1 operates and contact paring and RL1A make. When RL1A makes this switches in the auxiliary voltage which operates RL2 making the rest of the user available contacts change state. Operation of RL2 causes RL2A to open thus switching in RT1 and reducing the burden on RL1. The contacts are held in the operate position until the voltage between pins 27 and 28 drops to 108% - 135% of Vn. At which point RL1A and contact paring open, this causes the 5 user available contacts that are operated by RL2 to return to there normally de-energised state. An Applications diagram and explanation can be found in Applications There is a hand reset flag indicator on the front of the relay. It indicates upon energisation of RL VR116 (6 Contact) VR Contact RL1A RL2A C2 RL1 27 V3 RT1 RT2 RL2A R1 C1 D2 D2 V2 D2 D2 28 D1 D1 V1 D1 D1 RL2 RL1A Figure 2-2 Functional Diagram: VR116 (6 Contact) Note: Figure 2-2 shows the VR116 wired for both A.C. and D.C. applications. (There are no components removed or wired links added for the VR116). Figure 2-2 shows the VR116 in its de-energised state. Table 2-2 Contact Terminal Numbers (VR116) Relay type Relay Type VR 116 (Max Number of B contacts) VR 116 6M 0 M M M M M M VR 116 1B 5M 1 B M M M M M VR 116 2B 4M 2 B B M M M M VR 116 3B 3M 3 B B B M M M VR 116 4B 2M 4 B B B B M M VR 116 5B 1M 5 B B B B B M Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact. Siemens 2013 Siemens Protection Devices Limited Chapter 6 Page 7 of 18

146 VR Over and Under Voltage Relays 2.3 VR 121 This VR Relay is specified with 2 user available contacts. The Relay can be powered from either an AC or DC supply (Vn). The range of Vn values available is listed in The VR 121 is an under voltage relay. RL1 is a normally energised. When the voltage between pins 27 and 28 falls to 30% - 63% of Vn, RL1 is de-energised and contact parings 1-3 and 2-4 change state. These contacts remain in this position until the voltage between pins 27 and 28 rises to 85% - 90% of Vn. At which point RL1 is energised again and the contact parings 1-3 and 2-4 return to there normal state. An Applications diagram and explanation can be found in Applications There is a hand reset flag indicator on the front of the relay. It indicates upon de-energisation of RL VR121 (2 Contact) Figure 2-3 Functional Diagram: VR121 (2 Contact) Note: Figure 2-3 shows the VR121 wired for both A.C. and D.C. applications. (There are no components removed or wired links added for the VR116). Figure 2-3 shows the VR121 in its de-energised state. Table 2-3 Contact Terminal Numbers (VR121) Relay Type VR 121 ( Max Relay Type Number of B contacts ) VR121 2M 0 M M VR121 1M 1B 1 M B Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact. Note: Contact paring 1-3 is always a make contact, it is therefore shown this way on Figure Siemens Protection Devices Limited Chapter 6 Page 8 of 18

147 VR Over and Under Voltage Relays 2.4 VR 122 This VR Relay is specified with 6 user available contacts. The Relay can be powered from either an AC or DC supply (Vn). The relay also requires an auxiliary supply (Vx) to drive the majority of the output contacts. The range of Vn values available is listed in The range of Vx values available is listed in The VR 122 is an under voltage relay. RL1 and RL2 are normally energised. When the voltage between pins 27 and 28 falls to 62% - 81% of Vn, RL1 is de-energised and contact paring and RL1A break. This removes Vx from RL2 (thus de-energising RL2) causing the contacts to change state and RL2A to make. When RL2A makes this switches out RT1 and increases the burden on RL1. When the voltage between pins 27 and 28 rises to 68.8% - 90% of Vn the relay resets, RL1 becomes energised causing the user available contacts to return to there normal state and RT1 is switched in to reduce the burden on RL1. An Applications diagram and explanation can be found in Applications There is a hand reset flag indicator on the front of the relay. It indicates upon de-energisation of RL VR122 (6 Contact) VR Contact RL1A RL2A C2 RL1 27 V3 RT1 RT2 RL2A R1 C1 D2 D2 V2 D2 D2 28 D1 D1 V1 D1 D1 RL2 RL1A Figure 2-4 Functional Diagram: VR122 (6 Contact) Note: Figure 2-4 shows the VR122 wired for both A.C. and D.C. applications. (There are no components removed or wired links added for the VR122). Figure 2-4 shows the VR122 in its de-energised state. Table 2-4 Contact Terminal Numbers (VR122) Relay type Relay Type VR 122 (Max Number of B contacts) VR 122 6M 0 M M M M M M VR 122 1B 5M 1 B M M M M M VR 122 2B 4M 2 B B M M M M VR 122 3B 3M 3 B B B M M M VR 122 4B 2M 4 B B B B M M VR 122 5B 1M 5 B B B B B M Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally Siemens open contact Siemens Protection Devices Limited Chapter 6 Page 9 of 18

148 VR Over and Under Voltage Relays 2.5 VR 123 This VR Relay is specified with either 2 or 4 user available contacts. The Relay can be powered from either an AC or DC supply (Vn). The range of Vn values available is listed in The VR 123 is an under voltage relay. RL1 is normally energised. The Vs value can be determined using a plug bridge. There are 7 steps between 30% of Vn and 60% of Vn. When the voltage between pins 27 and 28 falls to the Vs level, RL1 is de-energised and user available contacts change state. When the voltage between pins 27 and 28 rises to 68.8% - 90% of Vn the relay rests, RL1 becomes energised causing the user available contacts to return to there normal state. An Applications diagram and explanation can be found in Applications There is a hand reset flag indicator on the front of the relay. It indicates upon de-energisation of RL VR123 (2 Contact and 4 Contact) Figure 2-5 Functional Diagram: VR123 (2 Contact and 4 Contact) Note: Figure 2-5 shows the VR123 wired for both A.C. and D.C. applications. (There are no components removed or wired links added for the VR122). Figure 2-5 shows the VR123 in its de-energised state. Table 2-5 Contact Terminal Numbers (VR123) Relay type Relay Type VR 123 (Max Number of B contacts) 2 Contact 4 Contact VR 123 (2 Contact) 2M 0 M M VR 123 (2 Contact) 1B 1M 1 M B VR 123 (4Contact) 1B 3M 2 M B M M Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact Siemens Protection Devices Limited Chapter 6 Page 10 of 18

149 VR Over and Under Voltage Relays 3 Performance Specification Technical Information 3.1 Contacts Attribute Make and Carry continuously Make and carry for 3 seconds Break Minimum number of operations Value 1250VAa.c. or 1250Wd.c. within limits of 660V and 5A 7500VAa.c. or 7500Wd.c. within limits of 660V and 30A 1250VAa.c. or 100W (resistive) d.c. or 50W (inductive) (L/R = 0.04) d.c. within limits of 250V and 5A 10,000 operations, within the maximum contact loading specified. 3.2 Indication A hand reset flag indicator is provided. For under voltage it indicates on de-energiseation, for over voltage it indicates on energisation. Where an auxiliary element is used it also operates the flag. 3.3 Environmental Temperature IEC68-2-1/2 and BS2011(1977) Humidity IEC Vibration Shock and bump Operating -10 C to +55 C 56 days at 95% RH and 40 C IEC Class l. IEC and BS142, (1989) Storage -25 C to +70 C Relays meet the requirements with respect to shock and bump testing for Class 1 severity. 3.4 Insulation 7PG13 Relays will withstand: 5kV 1.2/50µs waveform as IEC kV rms 50Hz for 1minute (2.5kV for 1s) between all terminals and earth 1kV rms 50Hz for 1 minute across normally open contacts to IEC and BS Thermal Withstand (Continuous) Under voltage Over voltage Auxiliary supply 12Vn 1.5Vn or 12Vs whichever is the greater 1.25Vx 3.6 Operating Time Under voltage relays Over voltage relays Typically less than 40ms from Vn to switch-off Typically less than 90ms, 110ms with follower relay at 1.1 Vn. Siemens 2013 Siemens Protection Devices Limited Chapter 6 Page 11 of 18

150 VR Over and Under Voltage Relays 4 Installation 4.1 Unpacking, Storage and Handling On receipt remove the relay from the container in which it was received and inspect it for obvious damage. It is recommended that the relay not be removed from its case. If damage has been sustained a claim should be immediately be made against the carrier, also inform Siemens Protection Devices Limited, and the nearest Siemens agent. When not required for immediate use, the relay should be returned to its original carton and stored in a clean, dry place. The relay contains static sensitive devices, which are susceptible to damage due to static discharge. The relay s electronic circuits are protected from damage by static discharge when the relay is housed in its case. There can be no requirement to disassemble any relay, since there are no user serviceable parts in the relay. If any modules have been tampered with, then the guarantee will be invalidated. Siemens Protection Devices Limited reserves the right to charge for any subsequent repairs. 4.2 Wiring The product should be wired according to the scheme requirements, with reference to the appropriate wiring diagram. 4.3 Front Cover The front cover provides additional securing of the relay element within the case. The relay cover should be in place during normal operating conditions. 4.4 Fixings Crimps Ring tongued crimps with 90 bend are recommended Panel Fixings Typical mounting screw kit per Relay consists of: 4 M4x10mm Screws 4 M4 Nuts 4 M4 Lock Washers Typical rear terminal block fixing kit (1kit per terminal block fitted to relay) Consists of: 28 M4, 8mm Screws 28 M4 Lock Washer 2013 Siemens Protection Devices Limited Chapter 6 Page 12 of 18

151 VR Over and Under Voltage Relays 4.5 Relay Dimensions and Panel Fixings Relays are supplied in either the E2 or E4 Epsilon case E2 Case Dimensions mm 13.5 mm 150 mm 44 mm 51.5 mm 150 mm mm 177 mm Side view of E2 case Front view of E2 case Front view of E2 front cover Side view of E2 case with front cover attached E2 Terminal Numbering Viewed from Rear Siemens 2013 Siemens Protection Devices Limited Chapter 6 Page 13 of 18

152 VR Over and Under Voltage Relays E4 Case Dimensions mm 13.5 mm 150 mm 96 mm mm 150 mm mm 177 mm Side view of E4 case Front view of E4 case Front view of E4 front cover Side view of E4 case with front cover attached E4 Terminal Numbering Viewed from Rear 2013 Siemens Protection Devices Limited Chapter 6 Page 14 of 18

153 VR Over and Under Voltage Relays 5 Maintenance 5.1 Safety The commissioning and future maintenance of this equipment should only be carried out by skilled personnel trained in protective relay operation and capable of observing all the necessary safety precautions and regulations appropriate to this equipment and also the associated primary plant. Equipment should be isolated from auxiliary supplies and the circuit breaker trip circuit prior to commencing any work on an installed product. 5.2 Preliminary Tests Check that the relay operating voltage (and reset voltage if a reset coil is fitted) are correct for the auxiliary voltage to be used. In some instances relays are to be used with the coil in a series with a voltage dropper resistor, this is advised on the Order Acknowledgement and shown on the relay label as +Ext R, suitable resistors are supplied with the relay, ensure that such resistors are mounted vertical, and secure and wired to the correct relay coil. Isolate from the auxiliary supply(s) by removing fuses and line as necessary. Physically check the wiring to the relay terminals for security and prove that it is wired correctly to the circuit schematic wiring diagrams. 5.3 Mechanical Settings It should not be necessary to adjust settings during routine tests unless parts have been replaced or other repairs carried out. Adjustment of one setting will often influence another, therefore all settings must be checked after the final adjustment. 5.4 Contacts Contact tips are fine silver on copper and should only be burnished if any pitting has occurred. Contact pressures are set by gentle pressure with contact setting pliers near to the contact stack assembly, during this operation avoid putting any stress on the contact actuating comb. Contact pressures should be measured using an accurate gram gauge at the tip of the contact leaf. Siemens 2013 Siemens Protection Devices Limited Chapter 6 Page 15 of 18

154 VR Over and Under Voltage Relays 6 Applications 6.1 VR 121/123 Nominal Supply under Voltage Relay Figure 6-1 Applications Diagram: VR 121/3 The VR 121/3 are normally energised Relays, Figure 6-1 shows the VR 121/3 in a under voltage scheme. This scheme shows the relays and there associated contacts in there de-energised states. If the supply voltage between pins 27 and 28 falls to 30% - 63% of Vn (VR121) / 30% - 60% Vn (VR123), RL1 operates (de-energises) and the output contacts change state. These contacts remain in this position until the voltage between pins 27 and 28 rises to 85% - 90% Vn (VR 121) / 68.8% - 90% Vn (VR 123). At which point RL1 is energised again and the output contacts return to there normal state. The VR 123 is available with 2 or 4 user available contacts, contacts parings 5-7 and 6-8 are shown in a dotted line to represent this. The value at which the VR123 operates (30%-60% of Vn) is termed the voltage setting Vs and can be determined using a plug bridge. 6.2 VR 115 Nominal Supply over voltage Relay Figure 6-2 Applications Diagram: VR 115 The VR 115 is a normally de-energised Relay, Figure 6-2 shows the VR 115 in a over voltage scheme. This scheme shows the relay and its associated contacts in there de-energised state. If the supply voltage between pins 27 and 28 rises to 120% - 150% of Vn the coil is energised, the relay operates and the contacts change state. The contacts are held in this position until the voltage between pins 27 and 28 drops below 50% of Vn at which point they are returned to there normally de-energised state Siemens Protection Devices Limited Chapter 6 Page 16 of 18

155 VR Over and Under Voltage Relays 6.3 VR 122 Dual Supply under Voltage Relay Figure 6-3 Applications Diagram: VR 122 The VR 122 is a under voltage Relay, Figure 6-3 shows an applications diagram of the VR 122 in a under voltage scheme with an auxiliary supply used to power the output contacts. RL1 and RL2 are normally energised. This scheme shows RL1 and RL2 and there associated contacts in there de-energised state. If the voltage between pins 27 and 28 falls to 62% - 81% of Vn, RL1 is de-energised (operates) and contact paring and RL1 A break. When RL1 A breaks, RL2 de-energises (operates) causing the contacts associated with RL2 to change state. When the voltage between pins 27 and 28 rises to 68.8% - 90% of Vn, RL1 resets, causing RL1A to make which causes RL2 and the associated contacts to reset. 6.4 VR 116 Dual Supply over Voltage Relay Figure 6-4 Applications Diagram: VR 116 The VR 116 is a over voltage Relay, Figure 6-4 shows an applications diagram of the VR 116 in a over voltage scheme with an auxiliary supply used to power the output contacts. RL1 and RL2 are normally de-energised. This scheme shows RL1 and RL2 and there associated contacts in there de-energised state. If the voltage between pins 27 and 28 rises to 120% - 150% of Vn, RL1 operates and contact paring and RL1 A make. When RL1-A Makes, RL2 energises (operates) causing the contacts associated with RL2 to change state. When the voltage between pins 27 and 28 falls to 108% - 135% of Vn, RL1 resets, causing RL1 A to break causing RL2 and its associated contacts Siemens to reset Siemens Protection Devices Limited Chapter 6 Page 17 of 18

156 VR Over and Under Voltage Relays 2013 Siemens Protection Devices Limited Chapter 6 Page 18 of 18

157 XR Interposing, Supervision and Special Purpose Relays 7PG17 XR Relays Interposing, Supervision and Special Purpose Relays Document Release History This document is issue The list of revisions up to and including this issue is: 2013 First Issue Siemens 2013 Siemens Protection Devices Limited Chapter 7 Page 1 of 36

158 XR Interposing, Supervision and Special Purpose Relays Contents 1 Introduction Relay Description Interposing Relay Trip Relay Supervision Relay Supply Supervision Relay Special Purpose Relay Relay Features Type of Flag Description Self Reset Hand Reset Heavy Duty Contacts...7 Figure 1-1 Heavy Duty Contact Rating Curves Description of Operation PG (XR 105) PG1731-0**0 (XR105 2 Contact)...8 Figure 2-1 Functional Diagram: 7PG1731-0**0 (XR105 2 Contact) PG1731-0**1 (XR105 4 Contact)...9 Figure 2-2 Functional Diagram: 7PG1731-0**1 XR105 (4 Contact) PG (XR 106) PG1731-1**0 (XR106 2 Contact)...10 Figure 2-3 Functional Diagram: 7PG1731-1**0 (XR106 2 Contact) PG1731-1**1 (XR106 4 Contact)...11 Figure 2-4 Functional Diagram: 7PG1731-1**1 XR106 (4 Contact) PG1751-* XR PG1751-***1 (XR151 4 Contact)...12 Figure 2-5 Functional Diagram: 7PG1751-***1 XR151 (4 Contact) PG (XR 152) PG1741-3**1 (XR152 4 Contact)...13 Figure 2-6 Functional Diagram: 7PG1741-3**1 XR152 (4 Contact) PG (XR 153) PG1741-1**1 (XR153 4 Contact)...14 Figure 2-7 Functional Diagram: 7PG1741-1**1 XR153 (4 Contact) PG (XR 205) PG1732-0**0 (XR Contact)...15 Figure 2-8 Functional Diagram: 7PG1732-0**0 (XR205 4 Contact) PG1732-0**1 (XR205 8 Contact)...16 Figure 2-9 Functional Diagram: 7PG1732-0**1 XR205 (8 Contact) PG (XR Contact) PG1732-1**0 (XR Contact)...17 Figure 2-10 Functional Diagram: 7PG1732-1**0 (XR206 4 Contact) PG1732-1**1 (XR206 8 Contact)...18 Figure 2-11 Functional Diagram: 7PG1732-1**1 XR206 (8 Contact) PG (XR 250) PG1752-3**1 (XR250 4 Contact)...19 Figure 2-12 Functional Diagram: 7PG1752-3**1 XR250 (4 Contact) PG (XR 251) PG1752-1** (XR251 4 Contact)...20 Figure 2-13 Functional Diagram: 7PG1752-1**1 XR251 (4 Contact) PG (XR 350) PG1753-3**1 (XR350 4 Contact)...21 Figure 2-14 Functional Diagram: 7PG1753-3**1 XR350 (4 Contact) PG (XR 351) PG1753-1**1 (XR351 4 Contact) Siemens Protection Devices Limited Chapter 7 Page 2 of 36

159 XR Interposing, Supervision and Special Purpose Relays Figure 2-15 Functional Diagram: 7PG1753-1**1 XR351 (4 Contact) PG1763-0BA00-4CA0 (XR 309)...23 Figure 2-16 Functional Diagram: 7PG1763-0BA00-4CA0 (XR309) Technical Information Performance Specification...24 Technical Information Standard Contacts Operating Time Operating Time Typical Burden Environmental Insulation Thermal Withstand (Continuous) Operating Time Installation Unpacking, Storage and Handling Wiring Front Cover Fixings Crimps Panel Fixings Relay Dimensions and Panel Fixings E2 Case Dimensions E3 Case Dimensions E4 Case Dimensions Maintenance Safety Preliminary Tests Mechanical Settings Contacts Applications XR 151 Trip Relay Supervision Relay...31 Figure 6-1 Applications Diagram: 7PG1751-* (XR 151) XR 152/3 D.C. Supply Supervision Relay...32 Figure 6-2 Applications Diagram: 7PG1741-* (XR 152/3) XR 250/1 Trip Relay Supervision Application...33 Figure 6-3 Applications Diagram: 7PG1752-* (XR 250/1) Trip Relay Supervision Application XR 350/1 Trip Circuit Supervision Relay...35 Figure 6-4 Applications Diagram: 7PG1753-* (XR 350/1) XR 309 Ferro Resonance Detector...36 Figure 6-5 Applications Diagram: 7PG1763-0BA00-4CA0 (XR 309)...36 List of Figures Figure 1-1 Heavy Duty Contact Rating Curves...7 Figure 2-1 Functional Diagram: 7PG1731-0**0 (XR105 2 Contact)...8 Figure 2-2 Functional Diagram: 7PG1731-0**1 XR105 (4 Contact)...9 Figure 2-3 Functional Diagram: 7PG1731-1**0 (XR106 2 Contact)...10 Figure 2-4 Functional Diagram: 7PG1731-1**1 XR106 (4 Contact)...11 Figure 2-5 Functional Diagram: 7PG1751-***1 XR151 (4 Contact)...12 Siemens 2013 Siemens Protection Devices Limited Chapter 7 Page 3 of 36

160 XR Interposing, Supervision and Special Purpose Relays Figure 2-6 Functional Diagram: 7PG1741-3**1 XR152 (4 Contact)...13 Figure 2-7 Functional Diagram: 7PG1741-1**1 XR153 (4 Contact)...14 Figure 2-8 Functional Diagram: 7PG1732-0**0 (XR205 4 Contact)...15 Figure 2-9 Functional Diagram: 7PG1732-0**1 XR205 (8 Contact)...16 Figure 2-10 Functional Diagram: 7PG1732-1**0 (XR206 4 Contact)...17 Figure 2-11 Functional Diagram: 7PG1732-1**1 XR206 (8 Contact)...18 Figure 2-12 Functional Diagram: 7PG1752-3**1 XR250 (4 Contact)...19 Figure 2-13 Functional Diagram: 7PG1752-1**1 XR251 (4 Contact)...20 Figure 2-14 Functional Diagram: 7PG1753-3**1 XR350 (4 Contact)...21 Figure 2-15 Functional Diagram: 7PG1753-1**1 XR351 (4 Contact)...22 Figure 2-16 Functional Diagram: 7PG1763-0BA00-4CA0 (XR309)...23 Figure 6-1 Applications Diagram: 7PG1751-* (XR 151)...31 Figure 6-2 Applications Diagram: 7PG1741-* (XR 152/3)...32 Figure 6-3 Applications Diagram: 7PG1752-* (XR 250/1) Trip Relay Supervision Application...33 Figure 6-4 Applications Diagram: 7PG1753-* (XR 350/1)...35 Figure 6-5 Applications Diagram: 7PG1763-0BA00-4CA0 (XR 309)...36 List of Tables Table 1-1 Relay Features...6 Table 2-1 Contact Terminal Numbers (XR105 2 Contact)...8 Table 2-2 Contact Terminal Numbers (XR105 4 Contact)...9 Table 2-3 Contact Terminal Numbers (XR106 2 Contact)...10 Table 2-4 Contact Terminal Numbers (XR106 4 Contact)...11 Table 2-5 Contact Terminal Numbers (XR151 4 Contact)...12 Table 2-6 Contact Terminal Numbers (XR152 4 Contact)...13 Table 2-7 Contact Terminal Numbers (XR153 4 Contact)...14 Table 2-8 Contact Terminal Numbers (XR205 4 Contact)...15 Table 2-9 Contact Terminal Numbers (XR205 8 Conatct)...16 Table 2-10 Contact Terminal Numbers (XR206 4 Contact)...17 Table 2-11 Contact Terminal Numbers (XR206 8 Contact)...18 Table 2-12 Contact Terminal Numbers (XR250 4 Contact)...19 Table 2-13 Contact Terminal Numbers (XR251 4 Contact)...20 Table 2-14 Contact Terminal Numbers (XR350 4 Contact)...21 Table 2-15 Contact Terminal Numbers (XR351 4 Contact) Siemens Protection Devices Limited Chapter 7 Page 4 of 36

161 XR Interposing, Supervision and Special Purpose Relays 1 Introduction This manual is applicable to the following relays: 7PG (XR105) 7PG (XR106) 7PG1751-* (XR151) 7PG (XR152) 7PG (XR153) 7PG (XR205) 7PG (XR206) 7PG (XR250) 7PG (XR251) 7PG (XR350) 7PG (XR351) 7PG (XR309) Type XR relays are developments for specific applications from AR relay range. They are electro-mechanical relays with a consistent positive action, a long service life and comply with BS142. The XR range is used as Interposing, Supervision or Special Purpose Relays. 1.1 Relay Description Interposing Relay XR105 XR106 XR205 XR206 Types XR105, XR106, XR205 and XR206 are intended for the remote control of switchgear and associated equipment over pilot wires with a maximum resistance of 200 ohms. These relays are designed so that they are not susceptible to certain A.C. voltage levels which may be induced on to the pilot wires Trip Relay Supervision Relay XR151 XR250 XR251 XR350 XR351 Trip relay supervision relays have a low operating current, specific settings and time delayed drop-off. This latter feature is to keep the relay in the operated condition during temporary reductions in the battery voltage, such as those which occur just prior to a fuse blowing or during a busbar fault when many trip relays operate simultaneously. Siemens 2013 Siemens Protection Devices Limited Chapter 7 Page 5 of 36

162 XR Interposing, Supervision and Special Purpose Relays Supply Supervision Relay XR152 XR153 Types XR152 and XR153 relays are designed to comply with CEGB and other specification for protection supervision requirements and the monitoring of D.C. voltage supplies. These applications require relays with a low operating current, visual indication and the ability to initiate a remote alarm Special Purpose Relay XR309 This relay provides ferro-resonance detection as required by NGTS Three attracted armature elements are connected phase-to-phase via full bridge rectifiers. Under normal healthy conditions, with the system energised or de-energised, all the relay elements will be in unison and either operated or reset. No output is given. On supergrid systems the phenomenon of ferro-resonance may be experienced following the de-energisation of a directly connected transformer, and the ferro-resonance may be sustained by the induction from an energised parallel circuit. Re-energising the transformer whilst in a ferro-resonant state can risk severe switching overvoltages, therefore where there is a risk, a ferro-resonance detector relay is essential. 1.2 Relay Features Table 1-1 Relay Features MLFB Code Relay Type Number of Elements Number of Contacts/ Element Type of Flag Product description Specification Modular Case Size 7PG XR or 4 No Flag Interposing control relay E2 7PG XR or 4 Hand Reset Interposing control relay E2 7PG1751-* XR Hand/Self Reset Trip Relay Supervision Relay E2 (Show on deenergisation) 7PG XR Self Reset (Show on D.C. supply supervision relay E2 de-energisation) 7PG XR Self Reset (Show on D.C. supply supervision relay E2 de-energisation) 7PG XR or 4 No Flag Interposing Control Relay E2/E4 7PG XR or 4 Hand Reset Interposing Control Relay E2 7PG XR Self Reset Trip circuit supervision relay E3 7PG XR Hand Reset Trip circuit supervision relay E3 7PG XR Self Reset Trip circuit supervision relay E3 7PG XR Hand Reset Trip circuit supervision relay E3 7PG XR No Flag Ferro-resonance detector relay E4 1.3 Type of Flag Description Self Reset The flag shows whilst the relay is operated. (For normally energised relays the flag shows on de-energisation) Hand Reset The flag is held in the operated position by a mechanical latch which is released by the cover mounted reset Siemens Protection Devices Limited Chapter 7 Page 6 of 36

163 XR Interposing, Supervision and Special Purpose Relays 1.4 Heavy Duty Contacts Heavy duty output contacts are available with some of the XR relays (see Description of Operation for specific relays that have a heavy duty output contact option). The contacts become polarity conscious due to the addition of the blow out magnet which is fitted to aid arc extinction. The Heavy Duty contacts have a larger break duty compared to standard duty contacts. The make and carry of a heavy duty contact is the same as the standard duty contacts W 2500 W 5000 W 500 W 250 W 100 W 50 W 25 W Figure 1-1 Heavy Duty Contact Rating Curves Siemens 2013 Siemens Protection Devices Limited Chapter 7 Page 7 of 36

164 XR Interposing, Supervision and Special Purpose Relays 2 Description of Operation 2.1 7PG (XR 105) This XR Relay is specified with either 2 or 4 user available contacts. These contacts can either be heavy duty or standard contacts. The Relay is powered from a rated voltage DC supply. The XR 105 is an interposing control relay. RL1 is normally de-energised. The relay is operated by the protection contact PR. The output contacts of the relay are held in the operate position whilst the relay operate coil is energised. The relay has an option of heavy duty output contacts. There is no flag indicator on the front of the relay PG1731-0**0 (XR105 2 Contact) Figure 2-1 Functional Diagram: 7PG1731-0**0 (XR105 2 Contact) Table 2-1 Contact Terminal Numbers (XR105 2 Contact) Relay Type Relay Type XR 105 Max No of B Contacts Terminal Numbers (2 Contact) PG1731-0CA0 0 M M 7PG1731-0BB0 1 M B 7PG1731-0AC0 2 B B XR105 2M (HD) Heavy Duty contact arrangement is M+ M+ XR105 1B (HD), 1M (STD) specified in the non-mlfb listing. +B M XR105 1B (STD), 1M (HD) B M+ XR105 1B (HD), 1M (HD) Heavy duty contacts are fitted with +B M+ XR105 1M (STD), 1M (HD) blowout magnets and are polarity M M+ XR105 2B (HD) conscious. +B +B Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact. HD (Heavy duty), location of heavy duty contact. STD (Standard), location of Standard contact Siemens Protection Devices Limited Chapter 7 Page 8 of 36

165 XR Interposing, Supervision and Special Purpose Relays PG1731-0**1 (XR105 4 Contact) Figure 2-2 Functional Diagram: 7PG1731-0**1 XR105 (4 Contact) Table 2-2 Contact Terminal Numbers (XR105 4 Contact) Relay Type XR 105 Max No of B Contacts Terminal Numbers Relay Type (4 Contact) PG1731-0CA1 0 M M M M 7PG1731-0BB1 1 M B M M 7PG1731-0AC1 2 B B M M 7PG1731-0BD1 3 B B M B 7PG1731-0AE1 4 B B B B XR105 4M (HD) Heavy Duty contact arrangement is M+ M+ M+ M+ XR105 3M (HD) 1B (HD) specified in the non-mlfb listing. M+ M+ M+ +B XR105 2M (HD) 2B (HD) M+ M+ +B +B XR105 1B (HD) 3M (HD) M+ +B +B +B XR105 4B (HD) +B +B +B +B XR105 2M (HD) 2M (STD) Heavy duty contacts are fitted with blowout M+ M+ M M XR105 2M (HD) 2B (STD) magnets and are polarity conscious. M+ M+ B B Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact. HD (Heavy duty), location of heavy duty contact. STD (Standard), location of Standard contact. Siemens 2013 Siemens Protection Devices Limited Chapter 7 Page 9 of 36

166 XR Interposing, Supervision and Special Purpose Relays 2.2 7PG (XR 106) This XR Relay is specified with either 2 or 4 user available contacts. These contacts can either be heavy duty or standard contacts. The Relay is powered from a rated voltage DC supply. The XR 105 is an interposing control relay. RL1 is normally de-energised. The relay is operated by the protection contact PR. The output contacts of the relay are held in the operate position whilst the relay operate coil is energised. The relay has an option of heavy duty output contacts. There is a hand reset flag indicator on the front of the relay. The flag indicates upon energisation of RL PG1731-1**0 (XR106 2 Contact) Figure 2-3 Functional Diagram: 7PG1731-1**0 (XR106 2 Contact) Table 2-3 Contact Terminal Numbers (XR106 2 Contact) Relay Type Relay Type XR 106 Max No of B Contacts Terminal Numbers (2 Contact) PG1731-1CA0 0 M M 7PG1731-1BB0 1 M B 7PG1731-1AC0 2 B B XR106 2M (HD) Heavy Duty contact arrangement is M+ M+ XR106 1B (HD), 1M (STD) specified in the non-mlfb listing. +B M XR106 1B (STD), 1M (HD) B M+ XR106 1B (HD), 1M (HD) Heavy duty contacts are fitted with +B M+ XR106 1M (STD), 1M (HD) blowout magnets and are polarity M M+ XR106 2B (HD) conscious. +B +B Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact. HD (Heavy Duty), location of heavy duty contact. STD (Standard), location of Standard contact Siemens Protection Devices Limited Chapter 7 Page 10 of 36

167 XR Interposing, Supervision and Special Purpose Relays PG1731-1**1 (XR106 4 Contact) Figure 2-4 Functional Diagram: 7PG1731-1**1 XR106 (4 Contact) Table 2-4 Contact Terminal Numbers (XR106 4 Contact) Relay Type XR 106 Max No of B Contacts Terminal Numbers Relay Type (4 Contact) PG1731-1CA1 0 M M M M 7PG1731-1BB1 1 M B M M 7PG1731-1AC1 2 B B M M 7PG1731-1BD1 3 B B M B 7PG1731-1AE1 4 B B B B XR106 4M (HD) Heavy Duty contact arrangement is M+ M+ M+ M+ XR106 3M (HD) 1B (HD) specified in the non-mlfb listing. M+ M+ M+ +B XR106 2M (HD) 2B (HD) M+ M+ +B +B XR106 1B (HD) 3M (HD) M+ +B +B +B XR106 4B (HD) +B +B +B +B XR106 2M (HD) 2M (STD) Heavy duty contacts are fitted with blowout M+ M+ M M XR106 2M (HD) 2B (STD) magnets and are polarity conscious. M+ M+ B B Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact. HD (Heavy duty), location of heavy duty contact. STD (Standard), location of Standard contact. Siemens 2013 Siemens Protection Devices Limited Chapter 7 Page 11 of 36

168 XR Interposing, Supervision and Special Purpose Relays 2.3 7PG1751-* XR 151 This XR Relay is specified with 4 user available contacts. The Relay is powered from a rated voltage 125V DC supply. The XR151 is designed to allow the supervision of a trip relay operating coil. RL1 is normally energised. When the supply voltage reduces to the drop-off value (not less than 26% of Vn) the output contacts change state. The contacts are held in this position until the supply voltage increases to the pick up value (70% of Vn). The two ve terminals (14 and 16) are required for applications of trip relay supervision. An example of this can be found in Applications 6.1. There is a flag indicator on the front of the relay, it can be specified as either a hand reset or a self reset. The flag indicates upon de-energisation of RL PG1751-***1 (XR151 4 Contact) PG1751-* (XR 151) 4 Contact ve 14 - ve 16 R1 R2 RL1 +ve 13 Figure 2-5 Note: R1 and R2 are both 5K6. Functional Diagram: 7PG1751-***1 XR151 (4 Contact) Table 2-5 Contact Terminal Numbers (XR151 4 Contact) Relay Type Relay Type XR151(Max (4 Contact) No of B Contacts) PG1751-*EA10-4**0 0 M M M M 7PG1751-*DB10-4**0 1 M B M M 7PG1751-*CC10-4**0 2 B B M M 7PG1751-*BD10-4**0 3 B B M B 7PG1751-*AE10-4**0 4 B B B B Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact PG (XR 152) 2013 Siemens Protection Devices Limited Chapter 7 Page 12 of 36

169 XR Interposing, Supervision and Special Purpose Relays This XR Relay is specified with 4 user available contacts. The Relay is powered from a rated DC Voltage supply. The XR152 is designed to allow the supervision of a D.C. voltage supply. RL1 is normally energised. When the supply voltage reduces to the drop-off value (not less than 26% of Vn) the output contacts change state. The contacts are held in this position until the supply voltage increases to the pick up value (70% of Vn). The relay has an option of heavy duty output contacts. An applications diagram and description can be found in Applications 6.2. There is a self reset flag indicator on the front of the relay, the flag indicates upon de-energisation of RL PG1741-3**1 (XR152 4 Contact) Figure 2-6 Functional Diagram: 7PG1741-3**1 XR152 (4 Contact) Table 2-6 Contact Terminal Numbers (XR152 4 Contact) Relay Type Relay Type XR152(Max (4 Contact) No of B Contacts) PG1741-3EA10-nAA0 0 M M M M 7PG1741-3DB10-nAA0 1 M B M M 7PG1741-3CC10-nAA0 2 B B M M 7PG1741-3BD10-nAA0 3 B B M B 7PG1741-3AE10-nAA0 4 B B B B XR152 4M (HD) Heavy Duty contact M+ M+ M+ M+ XR152 3M (HD) 1B (HD) arrangement is specified M+ M+ M+ +B XR152 2M (HD) 2B (HD) in the non-mlfb listing. M+ M+ +B +B XR152 1M (HD) 3B (HD) M+ +B +B +B XR152 4B (HD) Heavy duty contacts are +B +B +B +B XR152 2M (HD) 2M(STD) fitted with blowout M+ M+ M M XR152 2M (HD) 2B(STD) magnets and are polarity M+ M+ B B XR152 2M (HD) 2B(STD) conscious. M M +B +B Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact. HD (Heavy duty), location of heavy duty contact. STD (Standard), location of Standard contact PG (XR 153) This XR Relay is specified with 4 Siemens user available contacts. The Relay is powered from a rated DC Voltage supply Siemens Protection Devices Limited Chapter 7 Page 13 of 36

170 XR Interposing, Supervision and Special Purpose Relays The XR153 is designed to allow the supervision of a D.C. voltage supply. RL1 is normally energised. When the supply voltage reduces to the drop-off value (not less than 26% of Vn) the output contacts change state. The contacts are held in this position until the supply voltage increases to the pick up value (70% of Vn). The relay has an option of heavy duty output contacts. An applications diagram and description can be found in Applications 6.2. There is a hand reset flag indicator on the front of the relay, the flag indicates upon de-energisation of RL PG1741-1**1 (XR153 4 Contact) Figure 2-7 Functional Diagram: 7PG1741-1**1 XR153 (4 Contact) Table 2-7 Contact Terminal Numbers (XR153 4 Contact) Relay Type Relay Type XR153(Max (4 Contact) No of B Contacts) PG1741-1EA10-*AA0 0 M M M M 7PG1741-1DB10-*AA0 1 M B M M 7PG1741-1CC10-*AA0 2 B B M M 7PG1741-1BD10-*AA0 3 B B M B 7PG1741-1AE10-*AA0 4 B B B B XR153 4M (HD) Heavy Duty contact M+ M+ M+ M+ XR153 3M (HD) 1B (HD) arrangement is specified M+ M+ M+ +B XR153 2M (HD) 2B (HD) in the non-mlfb listing. M+ M+ +B +B XR153 1M (HD) 3B (HD) M+ +B +B +B XR153 4B (HD) Heavy duty contacts are +B +B +B +B XR153 2M (HD) 2M(STD) fitted with blowout M+ M+ M M XR153 2M (HD) 2B(STD) magnets and are polarity M+ M+ B B XR153 2M (HD) 2B(STD) conscious. M M +B +B Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact. HD (Heavy duty), location of heavy duty contact. STD (Standard), location of Standard contact PG (XR 205) This relay is the two element version of the XR 105, it is specified with either 4 or 8 user available contacts. These contacts can either be heavy duty or standard contacts. The Relay is powered from a rated voltage DC supply Siemens Protection Devices Limited Chapter 7 Page 14 of 36

171 XR Interposing, Supervision and Special Purpose Relays The XR 205 is an interposing control relay. RL1 and RL2 are normally de-energised. RL1 and Rl2 are operated by the protection contacts PR1 and PR2. The output contacts of the relay are held in the operate position whilst the relay operate coil is energised. The relay has an option of heavy duty output contacts. There is no flag indicator on the front of the relay PG1732-0**0 (XR Contact) Figure 2-8 Functional Diagram: 7PG1732-0**0 (XR205 4 Contact) Table 2-8 Contact Terminal Numbers (XR205 4 Contact) Relay Type XR 205 Max No of B Contacts Terminal Relay Type Numbers (4 Contact) PG1732-0CA0 0 M M 7PG1732-0BB0 1 M B 7PG1732-0AC0 2 B B XR205 2M (HD) Heavy Duty contact arrangement is specified M+ M+ XR205 1M (HD), 1M (STD) in the non-mlfb listing. Heavy duty contacts are fitted with blowout magnets and are polarity conscious. M+ M Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact. HD (Heavy duty), location of heavy duty contact. STD (Standard), location of Standard contact. Siemens 2013 Siemens Protection Devices Limited Chapter 7 Page 15 of 36

172 XR Interposing, Supervision and Special Purpose Relays PG1732-0**1 (XR205 8 Contact) Figure 2-9 Functional Diagram: 7PG1732-0**1 XR205 (8 Contact) Table 2-9 Contact Terminal Numbers (XR205 8 Conatct) Relay Type Relay Type XR 205 Max No of B Contacts Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact. HD (Heavy duty), location of heavy duty contact. STD (Standard), location of Standard contact. Terminal Numbers (8 Contact) PG1732-0CA1 0 M M M M 7PG1732-0BB1 1 M B M M 7PG1732-0AC1 2 B B M M 7PG1732-0BD1 3 B B M B 7PG1732-0AE1 4 B B B B XR205 4M (HD) M+ M+ M+ M+ XR205 2M (HD) 2M Heavy Duty contact arrangement is M+ M+ M M XR205 2M (HD) 2B (STD) specified in the non-mlfb listing. M+ M+ B B XR205 2M (HD) 1M 1B (STD) M+ M+ M B XR205 2M (HD) 2B (HD) M+ M+ +B +B XR205 3M (HD) 1B (HD) M+ M+ M+ B XR205 1M (HD) 2M 1B (STD) Heavy duty contacts are fitted with M+ M+ B B XR205 1M (HD) 3M 0B (STD) blowout magnets and are polarity M+ M M M conscious. XR205 2M (STD) 2B (HD) M M +B +B 2.7 7PG (XR CONTACT) 2013 Siemens Protection Devices Limited Chapter 7 Page 16 of 36

173 XR Interposing, Supervision and Special Purpose Relays This relay is the two element version of the XR 106, it is specified with either 4 or 8 user available contacts. These contacts can either be heavy duty or standard contacts. The Relay is powered from a rated voltage DC supply. The XR 206 is an interposing control relay. RL1 and RL2 are normally de-energised. RL1 and Rl2 are operated by the protection contacts PR1 and PR2. The output contacts of the relay are held in the operate position whilst the relay operate coil is energised. The relay has the option of heavy duty output contacts. There are two hand reset flag indicators on the front of the relay. The flags indicate upon energisation of RL1 and RL PG1732-1**0 (XR Contact) Figure 2-10 Functional Diagram: 7PG1732-1**0 (XR206 4 Contact) Table 2-10 Contact Terminal Numbers (XR206 4 Contact) Relay Type XR 206 Max No of B Contacts Terminal Relay Type Numbers (4 Contact) PG1732-1CA0 0 M M 7PG1732-1BB0 1 M B 7PG1732-1AC0 2 B B XR206 2M (HD) Heavy Duty contact arrangement is specified M+ M+ XR206 1M (HD), 1M (STD) in the non-mlfb listing. Heavy duty contacts are fitted with blowout magnets and are polarity conscious. M+ M Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact. HD (Heavy duty), location of heavy duty contact. STD (Standard), location of Standard contact. Siemens 2013 Siemens Protection Devices Limited Chapter 7 Page 17 of 36

174 XR Interposing, Supervision and Special Purpose Relays PG1732-1**1 (XR206 8 Contact) Figure 2-11 Functional Diagram: 7PG1732-1**1 XR206 (8 Contact) Table 2-11 Contact Terminal Numbers (XR206 8 Contact) Relay Type Relay Type XR 206 Max No of B Contacts Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact. HD (Heavy duty), location of heavy duty contact. STD (Standard), location of Standard contact. Terminal Numbers (8 Contact) PG1732-1CA1 0 M M M M 7PG1732-1BB1 1 M B M M 7PG1732-1AC1 2 B B M M 7PG1732-1BD1 3 B B M B 7PG1732-1AE1 4 B B B B XR206 4M (HD) M+ M+ M+ M+ XR206 2M (HD) 2M Heavy Duty contact arrangement is M+ M+ M M XR206 2M (HD) 2B (STD) specified in the non-mlfb listing. M+ M+ B B XR206 2M (HD) 1M 1B (STD) M+ M+ M B XR206 2M (HD) 2B (HD) M+ M+ +B +B XR206 3M (HD) 1B (HD) M+ M+ M+ B XR206 1M (HD) 2M 1B (STD) Heavy duty contacts are fitted with M+ M+ B B XR206 1M (HD) 3M 0B (STD) blowout magnets and are polarity M+ M M M conscious. XR206 2M (STD) 2B (HD) M M +B +B 2013 Siemens Protection Devices Limited Chapter 7 Page 18 of 36

175 XR Interposing, Supervision and Special Purpose Relays 2.8 7PG (XR 250) This XR Relay is specified with 4 user available contacts (contact is an additional contact used as a special purpose pre closing supervision contact). The XR 250 contains 2 elements (RL1 and RL3). RL1 and RL3 are powered from two separate D.C. Supply s. RL1 is powered from a Trip D.C. supply. RL3 is powered from an alarm D.C. supply. The XR250 is designed to allow the supervision of a trip relay circuit. RL1 and RL3 are normally energised. Figure 2-12 shows the relay in the de-energised state. An applications diagram and description of the XR250 can be found in Applications 6.3. There is a self reset flag indicator on the front of the relay, the flag indicates upon de-energisation of RL PG1752-3**1 (XR250 4 Contact) PG (XR 250) 4 Contact RL1 B ve 28 +ve 21 RL1 A RL1 B RL1 -ve 22 RL3 -ve 27 Figure 2-12 Functional Diagram: 7PG1752-3**1 XR250 (4 Contact) Table 2-12 Contact Terminal Numbers (XR250 4 Contact) Relay Type Note: Contact is always a make (5 Contact) contact. It is not documented in the PG1752-3EA10-nBa0 MLFB code because it is operated by M M M M M 7PG1752-3DB10-nBa0 a separate element (RL1). The MLFB M B M M M 7PG1752-3CC10-nBa0 code describes the 4 contacts B B M M M 7PG1752-3BD10-nBa0 operated by RL3. Contact is B B M B M 7PG1752-3AE10-nBa0 used as a special purpose pre closing B B B B M supervision contact Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact. Siemens 2013 Siemens Protection Devices Limited Chapter 7 Page 19 of 36

176 XR Interposing, Supervision and Special Purpose Relays 2.9 7PG (XR 251) This XR Relay is specified with 4 user available contacts (contact is an additional contact used as a special purpose pre closing supervision contact). The XR 251 contains 2 elements (RL1 and RL3). RL1 and RL3 are powered from two separate D.C. Supply s. RL1 is powered from a Trip D.C. supply. RL3 is powered from an alarm D.C. supply. The XR251 is designed to allow the supervision of a trip relay circuit. RL1 and RL3 are normally energised. Figure 2-13 shows the relay in the de-energised state. An applications diagram and description of the XR251 can be found in Applications 6.3. There is a hand reset flag indicator on the front of the relay, the flag indicates upon de-energisation of RL PG1752-1** (XR251 4 Contact) PG (XR 251) 4 Contact RL1 B ve 28 +ve 21 RL1 A RL1 B RL1 -ve 22 RL3 -ve 27 Figure 2-13 Functional Diagram: 7PG1752-1**1 XR251 (4 Contact) Table 2-13 Contact Terminal Numbers (XR251 4 Contact) Relay Type Note: Contact is always a make (5 Contact) contact. It is not documented in the PG1752-1EA10-nBa0 MLFB code because it is operated by M M M M M 7PG1752-1DB10-nBa0 a separate element (RL1). The MLFB M B M M M 7PG1752-1CC10-nBa0 code describes the 4 contacts B B M M M 7PG1752-1BD10-nBa0 operated by RL3. Contact is B B M B M 7PG1752-1AE10-nBa0 used as a special purpose pre closing B B B B M supervision contact Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact Siemens Protection Devices Limited Chapter 7 Page 20 of 36

177 XR Interposing, Supervision and Special Purpose Relays PG (XR 350) This XR Relay is specified with 4 user available contacts (contact is an additional contact used as a special purpose pre closing supervision contact). The XR 350 contains 3 elements (RL1, RL2 and RL3). RL1 and RL2 are powered from a Trip D.C. supply. RL3 is powered from an alarm D.C. supply. The XR350 is designed to allow the supervision of a trip relay circuit. RL1, RL2 and RL3 are normally energised. Figure 2-14 shows the relay in the de-energised state. An applications diagram and description of the XR350 can be found in Applications 6.4. There is a self reset flag indicator on the front of the relay, the flag indicates upon de-energisation of RL PG1753-3**1 (XR350 4 Contact) Figure 2-14 Functional Diagram: 7PG1753-3**1 XR350 (4 Contact) Table 2-14 Contact Terminal Numbers (XR350 4 Contact) Relay Type Note: Contact is always a make (5 Contact) contact. It is not documented in the PG1753-3EA10-*B*0 MLFB code because it is operated by M M M M M 7PG1753-3DB10-*B*0 a separate element (RL1). The MLFB M B M M M 7PG1753-3CC10-*B*0 code describes the 4 contacts B B M M M 7PG1753-3BD10-*B*0 operated by RL3. Contact is B B M B M 7PG1753-3AE10-*B*0 used as a special purpose pre closing B B B B M supervision contact Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact. Siemens 2013 Siemens Protection Devices Limited Chapter 7 Page 21 of 36

178 XR Interposing, Supervision and Special Purpose Relays PG (XR 351) This XR Relay is specified with 4 user available contacts (contact is an additional contact used as a special purpose pre closing supervision contact). The XR 351 contains 3 elements (RL1, RL2 and RL3). RL1 and RL2 are powered from a Trip D.C. supply. RL3 is powered from an alarm D.C. supply. The XR351 is designed to allow the supervision of a trip relay circuit. RL1, RL2 and RL3 are normally energised. Figure 2-14 shows the relay in the de-energised state. An applications diagram and description of the XR351 can be found in Applications 6.4. There is a self reset flag indicator on the front of the relay, the flag indicates upon de-energisation of RL PG1753-1**1 (XR351 4 Contact) Figure 2-15 Functional Diagram: 7PG1753-1**1 XR351 (4 Contact) Table 2-15 Contact Terminal Numbers (XR351 4 Contact) Relay Type Note: Contact is always a make (5 Contact) contact. It is not documented in the PG1735-1EA10-*B*0 MLFB code because it is operated by M M M M M 7PG1735-1DB10-*B*0 a separate element (RL1). The MLFB M B M M M 7PG1735-1CC10-*B*0 code describes the 4 contacts B B M M M 7PG1735-1BD10-*B*0 operated by RL3. Contact is B B M B M 7PG1735-1AE10-*B*0 used as a special purpose pre closing B B B B M supervision contact Abbreviations: B (Break), location of normally closed contact. M (Make), location of normally open contact Siemens Protection Devices Limited Chapter 7 Page 22 of 36

179 XR Interposing, Supervision and Special Purpose Relays PG1763-0BA00-4CA0 (XR 309) This XR Relay provides ferro-resonance detection. The relay has a voltage rating of 110V A.C. Figure 2-16 shows the relay in its de-energised state. Pins 23, 25 and 27 are used as inputs from the secondary winding of a 3 phase transformer. When the 3 phase system is balanced RL1, RL2 and RL3 are all energised. On system deenergisation, the secondary voltage falls below the reset level and all 3 elements drop-off. In this situation there is no output at pin 3. In the event of ferro-resonance occurring two out of three elements will remain energised, this produces an output at pin3. This output can be used to initiate either an alarm timer or an external suppression circuit. If ferro-resonance is induced onto a de-energised system the relay will only respond if the amplitude of ferroresonance is above the relay element pick up level 40V A.C. Figure 2-16 Functional Diagram: 7PG1763-0BA00-4CA0 (XR309) Technical Information Frequency Rating Continuous Rating 50HZ 110V A.C. 127V A.C. Siemens 2013 Siemens Protection Devices Limited Chapter 7 Page 23 of 36

180 XR Interposing, Supervision and Special Purpose Relays 3 Performance Specification Technical Information 3.1 Standard Contacts Attribute Make and Carry continuously Make and carry for 3 seconds Break Minimum number of operations Value 1250VAa.c. or 1250Wd.c. within limits of 660V and 5A 7500VAa.c. or 7500Wd.c. within limits of 660V and 30A 1250VAa.c. or 100W (resistive) d.c. or 50W (inductive) (L/R = 0.04) d.c. within limits of 250V and 5A 10,000 operations, within the maximum contact loading specified. 3.2 Operating Time Operating Time XR 105, XR 106, XR 205, XR 206: typically 30ms, with 200 pilot resistance less than 80ms. XR 151: Reset time is no less than 100ms when supply is switched from 100% to 26% of Vn. XR 152/153: Reset time is no less than 100ms when supply is switched from 100% to 26% of Vn. XR 250, XR 251, XR 350, XR 351: Reset time is 400ms when supply is switched from Vn to off Typical Burden XR 105, XR 106, XR 205, XR 206: Typically 3.7W for a relay with 4 M contacts. XR151: less than 2.5W XR 152/153: 0.4W at 24V D.C. 125W at 125V D.C. XR 250, XR 251, XR 350, XR 351: Rated Voltage Trip Circuit Condition C.B. Open C.B. Closed Alarm Circuit 50V D.C W 125V D.C. 1W 2W 4W 240V D.C. 2W 4W 9W XR 309: Approximately 3VA per element Siemens Protection Devices Limited Chapter 7 Page 24 of 36

181 XR Interposing, Supervision and Special Purpose Relays 3.3 Environmental Temperature IEC68-2-1/2 and BS2011(1977) Humidity IEC Vibration Shock and bump Operating -10 C to +55 C 56 days at 95% RH and 40 C IEC Class l. IEC and BS142, (1989) Storage -25 C to +70 C Relays meet the requirements with respect to shock and bump testing for Class 1 severity. 3.4 Insulation 7PG13 Relays will withstand: 5kV 1.2/50µs waveform as IEC kV rms 50Hz for 1minute (2.5kV for 1s) between all terminals and earth 1kV rms 50Hz for 1 minute across normally open contacts to IEC and BS Thermal Withstand (Continuous) Normally De- Energised Relays Normally Energised Relays Auxiliary supply 12Vn 1.5Vn or 12Vs whichever is the greater 1.25Vx 3.6 Operating Time Normally De- Energised Relays Normally Energised Relays Typically less than 40ms from Vn to switch-off Typically less than 90ms, 110ms with follower relay at 1.1 Vn. Siemens 2013 Siemens Protection Devices Limited Chapter 7 Page 25 of 36

182 XR Interposing, Supervision and Special Purpose Relays 4 Installation 4.1 Unpacking, Storage and Handling On receipt remove the relay from the container in which it was received and inspect it for obvious damage. It is recommended that the relay not be removed from its case. If damage has been sustained a claim should be immediately be made against the carrier, also inform Siemens Protection Devices Limited, and the nearest Siemens agent. When not required for immediate use, the relay should be returned to its original carton and stored in a clean, dry place. The relay contains static sensitive devices, which are susceptible to damage due to static discharge. The relay s electronic circuits are protected from damage by static discharge when the relay is housed in its case. There can be no requirement to disassemble any relay, since there are no user serviceable parts in the relay. If any modules have been tampered with, then the guarantee will be invalidated. Siemens Protection Devices Limited reserves the right to charge for any subsequent repairs. 4.2 Wiring The product should be wired according to the scheme requirements, with reference to the appropriate wiring diagram. 4.3 Front Cover The front cover provides additional securing of the relay element within the case. The relay cover should be in place during normal operating conditions. 4.4 Fixings Crimps Ring tongued crimps with 90 bend are recommended Panel Fixings Typical mounting screw kit per Relay consists of: 4 M4x10mm Screws 4 M4 Nuts 4 M4 Lock Washers Typical rear terminal block fixing kit (1kit per terminal block fitted to relay) Consists of: 28 M4, 8mm Screws 28 M4 Lock Washer 2013 Siemens Protection Devices Limited Chapter 7 Page 26 of 36

183 XR Interposing, Supervision and Special Purpose Relays 4.5 Relay Dimensions and Panel Fixings Relays are supplied in either the E2, E3 or E4 epsilon cases E2 Case Dimensions mm 13.5 mm 150 mm 44 mm 51.5 mm 150 mm mm 177 mm Side view of E2 case Front view of E2 case Front view of E2 front cover Side view of E2 case with front cover attached E2 Terminal Numbering Viewed from Rear Siemens 2013 Siemens Protection Devices Limited Chapter 7 Page 27 of 36

184 XR Interposing, Supervision and Special Purpose Relays E3 Case Dimensions mm 13.5 mm 150 mm 68 mm 77.5mm 150 mm mm 177 mm Side view of E3 case Front view of E3 case Front view of E3 front cover Side view of E3 case with front cover attached E3 Terminal Numbering Viewed from Rear 2013 Siemens Protection Devices Limited Chapter 7 Page 28 of 36

185 XR Interposing, Supervision and Special Purpose Relays E4 Case Dimensions mm 13.5 mm 150 mm 96 mm mm 150 mm mm 177 mm Side view of E4 case Front view of E4 case Front view of E4 front cover Side view of E4 case with front cover attached E4 Terminal Numbering Viewed from Rear Siemens 2013 Siemens Protection Devices Limited Chapter 7 Page 29 of 36