" 86 " LOCKOUT RELAY APPLICATION PRINCIPLE OF OPERATION

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1 " " LOCKOUT RELAY A typical Lockout Relay would have two positions "TRIP - RESET". Under normal condition, the handle would be turned to "RESET" position and would remain mechanically latched at this position. The Lockout Relay contact LR which is in series with the Lockout Relay coil would be closed at the 'RESET" position only. The fault contact FC makes only when there is a fault in the circuit. When the Lockout Relay coil LR is energise, it would released the mechanical latch holding the handle at 'RESET" position and the handle would spring return to 'TRIP" position. So long as FC remains at close contact condition ( due tothe presence of a fault in the circuit ) the handle will not latched at "RESET" position but would always spring return to "TRIP " L FC D LR LR D N APPLICATION The Lockout Relay is a high speed Automatic Trip/Manual Reset auxiliary relay permitting simultaneous operations of up to contacts from 0A to 0A for AC and 0A to A for DC. Lockout Relays are normally connected to the fault sensing contacts of the circuit breakers. If a fault should occur, the Lockout Relays ensure that all the critical circuits are isolated and would remain isolated so long as the fault is not cleared. It's positive trip action ensures that all the contacts would perform as to requirements and it multi-contact arrangement eliminates the need for several control relays contacts. Fig. Fig. L L FC FC D D LR LR LR LR D D N N PRINCIPLE OF OPERATION Fig. TRIP RESET a. No Fault Condition - Fig. Handle at "TRIP" position LR contact open circuit because handle is at "TRIP" position. FC contact open circuit because there is no fault condition b. No Fault Condition - Fig. Handle turn to "RESET " position LR contact close circuit because handle at "TRIP" position. FC contact open circuit because there is no fault condition. c. Fault Condition - Fig. FC contact close circuit to energise Lockout Relay coil LR via the Lockout Relay contact LR.

2 " " LOCKOUT RELAY When coil LR is energise, the mechanical latch holding the handle is release, and the handle spring returns to "TRIP" position. Contact LR opens to isolate the coil from the power supply to prevent overheating of the coil. TYPES OF LOCKOUT RELAY b. Lockout Relay without manual release. Testing of the switching system can be carried out by energising the coil. Two types of Lockout Relays are available: a. Lockout Relay with Manual Release to allow testing of the of the switching system. TRIP RESET TRIP RESET 0 0 max. Switch Type CA0L CA0L CAL AL AL CL CHR0L CHRL Ratings Ith current (A) Switch Type CA0M CA0M CAM AM AM CM CHR0M CHRM Ratings Ith current (A) Number of Contacts - 0 deg. switching - 90 deg. switching Number of Contacts - 0 deg. switching - 90 deg. switching Fig. b - Contact Ratings Fig. a - Contact Ratings

3 " " LOCKOUT RELAY CONSTRUCTION DETAILS The parts of the Lockout Relays are:. The Electro-magnetic System The coils of the electro-magnetic system is totally encapsulated with a series built in contact LR. This contact will make at "RESET" or "ON" position and opens at 'TRIP" or "" position. The same coil of rated voltage can be used for 0/0hz or DC. Coils are available for voltage of V-00V/0hz, V-0V/0hz and V-0V/DC. The specifications of the coils in ohms are: Voltage -V V 00V 0V/V 0/0V Resistance.... Pull-in voltage Normal coil 0% 0% 0% 0% 0% Special coil 0% 0% 0% 0% 0% In selecting the coil voltage of the Lockout Relay, it is important to verify if additional coils e.g. protective relay coils etc.would be connected in series with the Lockout Relay coil. I n order to ensure that the Lockout Relay can trip should a fault occurs, it is important : To adjust the setting of the protective relay T coil so that the Lockout Relay can trip when the coil is energise- refer Fig. b. If the protective relay T coil is not adjustable, it is important that the coil voltage of the Lockout Relay is properly selected to match with the series coil T so the Lockout Relay coil can trip when energise. In such a case, the rated coil voltage of the Lockout relay should be lower than the DC bus voltage. It is important to ensure that the voltage V across the Lockout Relay coil should not be lower than the Pull-in voltage as specified above. The current flowing in the circuit is sufficient to energise and trip the Lockout Relay coil. WARNING To obtain maximum tripping speed, the Lockout Relay coils are rated for intermittent duty only. Continous energisation of the coil and may result in overheating of the coil.. The Switching Contacts System The contacts used are all double break fast switching silver alloy contacts and are housed in high grade thermoplastic insulating materials. For corrosive environment like petro-chemicals plants, gold contacts are available. Switching speed is 0 milli-seconds. Type A/A have four contact per stage of contact chamber and types C/C/C have contacts per stage of contact chamber. OPTIONAL EXTRAS a. Trip Indicator M0 The Trip Indicator is a mechanical coloured indicator to show the "TRIP /"RESET" that the handle has been turned to. Hence, when the handle is turn and remain latch at "RESET" position, the trip indicator shows Green on the window of the escutcheon plate. If a fault condition arises, the handle will turn to "TRIP" position and the indicator will show Red on the window. The coding for the trip indicator as follows: Square escutcheon plate S M0/AA M999/US009 Rectangular escutcheon plate S M0/BA M999/US009 ( + ) Lockout Relay DC Trip Bus D V ( + ) Protective Relay Coil Lockout Relay DC Trip Bus TS D V V ENGRAVINGS Various types of engravings are available. The common types are: Engraving Ordering code "-ON" S F/AB/A-P "TRIP-CLOSE" S F/AB/A-P "TRIP-RESET" S F*SG00 ( - ) D ( - ) D Fig.a Lockout Relay Fig.b Lockout Relay with withiout series relay coil with series relay coil

4 " " LOCKOUT RELAY Typical Requirement. Lockout Relay with manual reset. Contact rating 0A. Contact requirement NO + NC. Coil voltage 0VDC. Engraving "TRIP-CLOSE". Trip Indicator required. HOW TO ORDER When ordering the Lockout Relay, the following datas are to be provided:. Type of Lockout Relay required Without Manual Release ( Type CLetc.) With Manual release (Type CM etc ) Manual Release type have a pushbutton which manually trips the Lockout Relay for circuit testing of the contacts. The location of the pushbutton on the front of the unit makes it unnecessary for the operator to go inside a live panel in order to mechanically trip the device from behind the switch.. Contact Ratings required - refer Fig.. Contact Configuration required Specify contact arrangements as follows; Number of contacts making at "TRIP" position and if required the terminal number. Number of contacts making at "RESET" position and if required, the terminal number.. Coil voltage required.. Engraving on plate For example, "TRIP-RESET" Ordering Code of Standard Switch Contact Rating C M A / D 0 Type M - With manual reset L - Without manual reset Contact Configuration Frequency A - 0hz B - 0hz D - DC Coil Voltage 0 - v to v 0 - v to 0v 0 - v to 0v 00-0v 0-0v to v 0-0v to 0v 0-0v to 0v The ordering code to be as follows: Item Code Description. Optional Extras - Trip Indictor 9

5 "" Lockout Relay - Without Manual Release Plate Contacts Electrical Rating Coil Switch SIS Handle Switch Dimension Engraving Optional Extras Diagram Ith Voltage Reference Code (Black) Depth( mm ) (Refer Pg. ) TRIP RESET a + b 0A VDC CHR0L A/D0 E SIS000 S/PE Trip indicator M0 A VDC CHRL A/D0 E SIS000 S/PE Lockout Relay V0 TRIP RESET 0A VDC CL A/D0 E SIS000 S/PE TRIP RESET a + b 0A VDC CHR0L A/D0 E SIS000 9 S/PE Trip indicator M0 A VDC CHRL A/D0 E SIS000 9 S/PE Lockout Relay V0 0A VDC CL A/D0 E SIS S/PE a + b 9 0 0A VDC CHR0L SGZ/D0 E SIS000 S/PE Trip indicator M0 A VDC CHRL SGZ/D0 E SIS000 S/PE Lockout Relay V0 0A VDC CL SGZ/D0 E SIS000 S/PE a + b 0A VDC CHR0L SGZ/D0 E SIS000 0 S/PE Trip indicator M0 9 0 A VDC CHRL SGZ/D0 E SIS000 0 S/PE Lockout Relay V0 0A VDC CL RCZ/D0 E SIS000 0 S/PE 0a + 0b 0A VDC CHR0L SGZ/D0 E SIS000 S/PE Trip indicator M0 A VDC CHRL SGZ/D0 E SIS000 S/PE 9 0 Lockout Relay V0 0A VDC CL SGZ/D0 E SIS000 S/PE a + b 0A VDC CHR0L SGZ/D0 E SIS000 0 S/PE Trip indicator M0 A VDC CHRL SGZ/D0 E SIS000 0 S/PE Lockout Relay V0 9 0 a + b 0A 0VDC CHR0L A/D0 E SIS000 S/PE Trip indicator M0 A 0VDC CHR0L A/D0 E SIS000 S/PE Lockout Relay V0 0A 0VDC CL A/D0 E SIS000 S/PE a + b 0A 0VDC CHR0L A/D0 E SIS000 9 S/PE Trip indicator M0 Coil A 0VDC CHRL A/D0 E SIS000 9 S/PE Lockout Relay V0 0A 0VDC CL A/D0 E SIS S/PE a + b D D 0A 0VDC CHR0L SGZ/D0 E SIS000 S/PE Trip indicator M0 A 0VDC CHRL SGZ/D0 E SIS000 S/PE Lockout Relay V0 0A 0VDC CL SGZ/D0 E SIS000 S/PE 0

6 "" Lockout Relay - Without Manual Release Plate Contacts Electrical Rating Coil Switch SIS Handle Switch Dimension Engraving Optional Extras Diagram Ith Voltage Reference Code (Black) Depth( mm ) (Refer Pg. ) TRIP RESET a + b 0A 0VDC CHR0L SGZ/D0 E SIS000 0 S/PE Trip indicator M0 A 0VDC CHRL SGZ/D0 E SIS000 0 S/PE Lockout Relay V0 TRIP RESET 0A 0VDC CL SGZ/D0 E SIS000 0 S/PE TRIP RESET 0a + 0b 0A 0VDC CHR0L SGZ/D0 E SIS000 S/PE Trip indicator M0 A 0VDC CHRL SGZ/D0 E SIS000 S/PE Lockout Relay V0 0A 0VDC CL SGZ/D0 E SIS000 S/PE a + b 9 0 A 0VDC CHR0L SGZ/D0 E SIS000 0 S/PE Trip indicator M0 A 0VDC CHRL SGZ/D0 E SIS000 0 S/PE Lockout Relay V0 9 0 a + b 0A VDC CHR0L A/DE SIS000 S/PE Trip indicator M0 A VDC CHRL A/DE SIS000 S/PE Lockout Relay V0 0A VDC CL A/DE SIS000 S/PE a + b 9 0 0A VDC CHR0L A/DE SIS000 9 S/PE Trip indicator M0 A VDC CHRL A/DE SIS000 9 S/PE Lockout Relay V0 0A VDC CL A/DE SIS S/PE a + b 0A VDC CHR0L SGZ/D E SIS000 S/PE Trip indicator M0 9 0 A VDC CHRL SGZ/D E SIS000 S/PE Lockout Relay V0 0A VDC CL SGZ/D E SIS000 S/PE a + b 0A VDC CHR0L SGZ/D E SIS000 0 S/PE Trip indicator M0 A VDC CHRL SGZ/D E SIS000 0 S/PE Lockout Relay V0 0A VDC CL SGZ/D E SIS000 0 S/PE Coil 0a + 0b 0A VDC CHR0L SGZ/D E SIS000 S/PE Trip indicator M0 A VDC CHRL SGZ/D E SIS000 S/PE Lockout Relay V0 0A VDC CL SGZ/D E SIS000 S/PE D D a + b 0A VDC CHR0L SGZ/D E SIS000 0 S/PE Trip indicator M0 A VDC CHRL SGZ/D E SIS000 0 S/PE Lockout Relay V0

7 "" Lockout Relay - Without Manual Release Plate Contacts Electrical Rating Coil Switch SIS Handle Switch Dimension Engraving Optional Extras Diagram Ith Voltage Reference Code (Black) Depth( mm ) (Refer Pg. ) TRIP CLOSE a + b 0A VDC CHR0L A/D0E SIS000 S/PE Trip indicator M0 A VDC CHRL A//D0E SIS000 S/PE Lockout Relay V0 TRIP 0A VDC CL A/SD0E SIS000 S/PE CLOSE TRIP CLOSE a + b 0A VDC CHR0L A/D0E SIS000 9 S/PE Trip indicator M0 A VDC CHRL A/D0E SIS000 9 S/PE Lockout Relay V0 0A VDC CL A/D0E SIS S/PE a + b 0A VDC CHR0L SGZ/D0 E SIS000 S/PE 9 0 Trip indicator M0 A VDC CHRL SGZ/D0 E SIS000 S/PE Lockout Relay V0 0A VDC CL SGZ/D0 E SIS000 S/PE a + b 0A VDC CHR0L SGZ/D0 E SIS000 0 S/PE Trip indicator M0 9 0 A VDC CHRL SGZ/D0 E SIS000 0 S/PE Lockout Relay V0 0A VDC CL SGZ/D0 E SIS000 S/PE 0a + 0b 0A VDC CHR0L SGZ/D0 E SIS000 S/PE Trip indicator M0 A VDC CHRL SGZ/D0 E SIS000 S/PE Lockout Relay V A VDC CL SGZ/D0 E SIS000 S/PE a + b 0A VDC CHR0L SGZ/D0 E SIS000 0 S/PE Trip indicator M0 A VDC CHRL SGZ/D0 E SIS000 0 S/PE Lockout Relay V0 9 0 a + b 0A 0VDC CHR0L A/D0E SIS000 S/PE Trip indicator M0 A 0VDC CHRL A/D0E SIS000 S/PE Lockout Relay V0 0A 0VDC CL A/D0E SIS000 S/PE a + b 0A 0VDC CHR0L A/D0E SIS000 9 S/PE Trip indicator M0 Coil A 0VDC CHRL A/D0E SIS000 9 S/PE Lockout Relay V0 0A 0VDC CL A/D0E SIS S/PE a + b 0A 0VDC CHR0L SGZ/D0 E SIS000 S/PE D D Trip indicator M0 A 0VDC CHRL SGZ/D0 E SIS000 S/PE Lockout Relay V0 0A 0VDC CL SGZ/D0 E SIS000 S/PE

8 "" Lockout Relay - Without Manual Release Plate Contacts Electrical Rating Coil Switch SIS Handle Switch Dimension Engraving Optional Extras Diagram Ith Voltage Reference Code (Black) Depth( mm ) (Refer Pg. ) TRIP CLOSE a + b 0A 0VDC CHR0L SGZ/D0 E SIS000 0 S/PE Trip indicator M0 A 0VDC CHRL SGZ/D0 E SIS000 0 S/PE Lockout Relay V0 TRIP CLOSE 0A 0VDC CL SGZ/D0 E SIS000 0 S/PE TRIP CLOSE 0a + 0b 0A 0VDC CHR0L SGZ/D0 E SIS000 S/PE Trip indicator M0 A 0VDC CHRL SGZ/D0 E SIS000 S/PE Lockout Relay V0 0A 0VDC CL SGZ/D0 E SIS000 S/PE a + b 9 0 A 0VDC CHR0L SGZ/D0 E SIS000 0 S/PE Trip indicator M0 A 0VDC CHRL SGZ/D0 E SIS000 0 S/PE Lockout Relay V0 9 0 a + b 0A VDC CHR0L A/D E SIS000 S/PE Trip indicator M0 A VDC CHRL A/D E SIS000 S/PE Lockout Relay V0 0A VDC CL A/D E SIS000 S/PE a + b 9 0 0A VDC CHR0L A/D E SIS000 9 S/PE Trip indicator M0 A VDC CHRL A/D E SIS000 9 S/PE Lockout Relay V0 0A VDC CL A/D E SIS S/PE a + b 0A VDC CHR0L SGZ/D E SIS000 S/PE 9 0 Trip indicator M0 A VDC CHRL SGZ/D E SIS000 S/PE Lockout Relay V0 0A VDC CL SGZ/D E SIS000 S/PE a + b 0A VDC CHR0L SGZ/D E SIS000 0 S/PE Trip indicator M0 A VDC CHRL SGZ/D E SIS000 0 S/PE Lockout Relay V0 0A VDC CL SGZ/D E SIS000 0 S/PE Coil 0a + 0b 0A VDC CHR0L SGZ/D E SIS000 S/PE Trip indicator M0 A VDC CHRL SGZ/D E SIS000 S/PE Lockout Relay V0 0A VDC CL SGZ/D E SIS000 S/PE D D a + b 0A VDC CHR0L SGZ/D E SIS000 0 S/PE Trip indicator M0 A VDC CHRL SGZ/D E SIS000 0 S/PE Lockout Relay V0

9 "" Lockout Relay - With Manual Release Plate Contacts Electrical Rating Coil Switch SIS Handle Switch Dimension Engraving Optional Extras Diagram Ith Voltage Reference Code (Black) Depth( mm) (Refer Pg. ) TRIP RESET a + b 0A VDC CHR0M A/D0 E SIS000 S/QE Trip indicator M0 A VDC CHRM A/D0 E SIS000 S/QE Lockout Relay V0 0A TRIP RESET VDC CM A/D0 E SIS000 Sa TRIP RESET a + b 0A VDC CHR0M A/D0 E SIS000 9 S/QE Trip indicator M0 A VDC CHRM A/D0 E SIS000 9 S/QE Lockout Relay V0 0A VDC CM A/D0 E SIS S/QE a + b 0A VDC CHR0M SGZ/D0 E SIS000 S/QE 9 0 Trip indicator M0 A VDC CHRM SGZ/D0 E SIS000 S/QE Lockout Relay V0 0A VDC CM SGZ/D0 E SIS000 S/QE a + b 0A VDC CHR0M SGZ/D0 E SIS000 0 S/QE Trip indicator M0 9 0 A VDC CHRM SGZ/D0 E SIS000 0 S/QE Lockout Relay V0 0A VDC CM SGZ/D0 E SIS000 0 S/QE 0a + 0b 0A VDC CHR0M SGZ/D0 E SIS000 S/QE Trip indicator M0 A VDC CHRM SGZ/D0 E SIS000 S/QE Lockout Relay V A VDC CM SGZ/D0 E SIS000 S/QE a + b 0A VDC CHR0M SGZ/D0 E SIS000 0 S/QE Trip indicator M0 A VDC CHRM SGZ/D0 E SIS000 0 S/QE Lockout Relay V0 9 0 a + b 0A 0VDC CHR0M A/D0 E SIS000 S/QE Trip indicator M0 A 0VDC CHRM A/D0 E SIS000 S/QE Lockout Relay V0 0A 0VDC CM A/D0 E SIS000 S/QE a + b 0A 0VDC CHR0M A/D0 E SIS000 9 S/QE Trip indicator M0 Coil A 0VDC CHRM A/D0 E SIS000 9 S/QE Lockout Relay V0 0A 0VDC CM A/D0 E SIS S/QE a + b 0A 0VDC CHR0M SGZ/D0 E SIS000 S/QE D D Trip indicator M0 A 0VDC CHRM SGZ/D0 E SIS000 S/QE Lockout Relay V0 0A 0VDC CM SGZ/D0 E SIS000 S/QE

10 "" Lockout Relay - With Manual Release Plate Contacts Electrical Rating Coil Switch SIS Handle Switch Dimension Engraving Optional Extras Diagram Ith Voltage Reference Code (Black) Depth (mm) (Refer Pg. ) TRIP RESET a + b 0A 0VDC CHR0M SGZ/D0 E SIS000 0 S/QE Trip indicator M0 A 0VDC CHRM SGZ/D0 E SIS000 0 S/QE Lockout Relay V0 TRIP RESET 0A 0VDC CM SGZ/D0 E SIS000 0 S/QE TRIP RESET 0a + 0b 0A 0VDC CHR0M SGZ/D0 E SIS000 S/QE Trip indicator M0 A 0VDC CHRM SGZ/D0 E SIS000 S/QE Lockout Relay V0 0A 0VDC CM SGZ/D0 E SIS000 S/QE a + b 0A 0VDC CHR0M SGZ/D0 E SIS000 0 S/QE 9 0 Trip indicator M0 A 0VDC CHRM SGZ/D0 E SIS000 0 S/QE Lockout Relay V0 9 0 a + b 0A VDC CHR0M A/D E SIS000 S/QE Trip indicator M0 A VDC CHRM A/D E SIS000 S/QE Lockout Relay V0 0A VDC CM A/D E SIS000 S/QE a + b 0A VDC CHR0M A/D E SIS000 9 S/QE 9 0 Trip indicator M0 A VDC CHRM A/D E SIS000 9 S/QE Lockout Relay V0 0A VDC CM A/D E SIS S/QE a + b 0A VDC CHR0M SGZ/D E SIS000 S/QE Trip indicator M0 9 0 A VDC CHRM SGZ/D E SIS000 S/QE Lockout Relay V0 0A VDC CM SGZ/D E SIS000 S/QE a + b 0A VDC CHR0M SGZ/D E SIS000 0 S/QE Trip indicator M0 A VDC CHRM SGZ/D E SIS000 0 S/QE Lockout Relay V0 0A VDC CM SGZ/D E SIS000 0 S/QE 0a + 0b Coil 0A VDC CHR0M SGZ/D E SIS000 S/QE Trip indicator M0 A VDC CHRM SGZ/D E SIS000 S/QE Lockout Relay V0 0A VDC CM SGZ/D E SIS000 S/QE a + b D D 0A VDC CHR0M SGZ/D E SIS000 0 S/QE Trip indicator M0 A VDC CHRM SGZ/D E SIS000 0 S/QE Lockout Relay V0

11 "" Lockout Relay - With Manual Release Plate Contacts Electrical Rating Coil Switch SIS Handle Switch Dimension Engraving Optional Extras Diagram Ith Voltage Reference Code (Black) Depth( mm ) (Refer Pg. ) TRIP CLOSE a + b 0A VDC CHR0M A/D0 E SIS000 S/QE Trip indicator M0 A VDC CHRM A/D0 E SIS000 S/QE Lockout Relay V0 TRIP CLOSE 0A VDC CM A/D0 E SIS000 S/QE TRIP CLOSE a + b 0A VDC CHR0M A/D0 E SIS000 9 S/QE Trip indicator M0 A VDC CHRM A/D0 E SIS000 9 S/QE Lockout Relay V0 0A VDC CM A/D0 E SIS S/QE a + b 9 0 0A VDC CHR0M SGZ/D0 E SIS000 S/QE Trip indicator M0 A VDC CHRM SGZ/D0 E SIS000 S/QE Lockout Relay V0 0A VDC CM SGZ/D0 E SIS000 S/QE a + b 0A VDC CHR0M SGZ/D0 E SIS000 0 S/QE Trip indicator M0 9 0 A VDC CHRM SGZ/D0 E SIS000 0 S/QE Lockout Relay V0 0A VDC CM SGZ/D0 E SIS000 0 S/QE 0a + 0b 0A VDC CHR0M SGZ/D0 E SIS000 S/QE Trip indicator M0 A VDC CHRM SGZ/D0 E SIS000 S/QE Lockout Relay V A VDC CM SGZ/D0 E SIS000 S/QE a + b 0A VDC CHR0M SGZ/D0 E SIS000 0 S/QE Trip indicator M0 A VDC CHRM SGZ/D0 E SIS000 0 S/QE Lockout Relay V0 9 0 a + b 0A 0VDC CHR0M A/D0 E SIS000 S/QE Trip indicator M0 A 0VDC CHRM A/D0 E SIS000 S/QE Lockout Relay V0 0A 0VDC CM A/D0 E SIS000 S/QE a + b 0A 0VDC CHR0M A/D0 E SIS000 9 S/QE Trip indicator M0 Coil A 0VDC CHRM A/D0 E SIS000 9 S/QE Lockout Relay V0 0A 0VDC CM A/D0 E SIS S/QE a + b D D 0A 0VDC CHR0M SGZ/D0 E SIS000 S/QE Trip indicator M0 A 0VDC CHRM SGZ/D0 E SIS000 S/QE Lockout Relay V0 0A 0VDC CM SGZ/D0 E SIS000 S/QE

12 "" Lockout Relay - With Manual Release Plate Contacts Electrical Rating Coil Switch SIS Handle Switch Dimension Engraving Optional Extras Diagram Ith Voltage Reference Code (Black) Depth( mm ) (Refer Pg. ) TRIP CLOSE a + b 0A 0VDC CHR0M SGZ/D0 E SIS000 0 S/QE Trip indicator M0 A 0VDC CHRM SGZ/D0 E SIS000 0 S/QE Lockout Relay V0 TRIP CLOSE 0A 0VDC CM SGZ/D0 E SIS000 0 S/QE TRIP CLOSE 0a + 0b 0A 0VDC CHR0M SGZ/D0 E SIS000 S/QE Trip indicator M0 A 0VDC CHRM SGZ/D0 E SIS000 S/QE Lockout Relay V0 0A 0VDC CM SGZ/D0 E SIS000 S/QE a + b 9 0 0A 0VDC CHR0M SGZ/D0 E SIS000 0 S/QE Trip indicator M0 A 0VDC CHRM SGZ/D0 E SIS000 0 S/QE Lockout Relay V0 9 0 a + b 0A VDC CHR0M A/D E SIS000 S/QE Trip indicator M0 A VDC CHRM A/D E SIS000 S/QE Lockout Relay V0 0A VDC CM A/D E SIS000 S/QE a + b 9 0 0A VDC CHR0M A/D E SIS000 9 S/QE Trip indicator M0 A VDC CHRM A/D E SIS000 9 S/QE Lockout Relay V0 0A VDC CM A/D E SIS S/QE a + b 0A VDC CHR0M SGZ/D E SIS000 S/QE Trip indicator M0 9 0 A VDC CHRM SGZ/D E SIS000 S/QE Lockout Relay V0 0A VDC CM SGZ/D E SIS000 S/QE a + b 0A VDC CHR0M SGZ/D E SIS000 0 S/QE Trip indicator M0 A VDC CHRM SGZ/D E SIS000 0 S/QE Lockout Relay V0 0A VDC CM SGZ/D E SIS000 0 S/QE 0a + 0b Coil 0A VDC CHR0M SGZ/D E SIS000 S/QE Trip indicator M0 A VDC CHRM SGZ/D E SIS000 S/QE Lockout Relay V0 0A VDC CM SGZ/D E SIS000 S/QE D D a + b 0A VDC CHR0M SGZ/D E SIS000 0 S/QE Trip indicator M0 A VDC CHRM SGZ/D E SIS000 0 S/QE Lockout Relay V0

13 "AS" Ammeter Switch Plate Type of Electrical Rating Switch SIS Handle Dimension Engraving Metering Switch Diagram Ith Reference Code (Black) (Refer Pg. ) R T R S T 9 T AMMETER S R Ammeter Switch 0A CHR0 A0/SGZ*EG - S/PR A positions A CHR A0/SGZ*EG - S/PR CT 0A C A0/SGZE - S/PR Monitor phase current A CAD A0/SGZ*EG - S/PR R S T R T S Ammeter Switch 0A CHR0 A0/SGZ*EG - S/PR A positions A CHR A0/SGZ*EG - S/PR CT 0 9 0A C A0/SGZE - S/PR Monitor phase current A CAD A0/SGZ*EG - S/PR 9 AMMETER R S T Ammeter Switch R S T 0A CHR0 SGZ9EG SIS000 S/PR positions A CHR SGZ9EG SIS000 S/PR CT 0A C SGZ9E SIS000 S/PR A Monitor phase current A CAD SGZ9EG SIS000 S/PR AMMETER R S T Ammeter Switch R S R S T T N 0A CHR0 SGZ0EG SIS000 S/PR positions A CHR SGZ0EG SIS000 S/PR CT 0A C SGZ0E SIS000 S/PR Monitor phase & A A CAD SGZ0EG SIS000 S/PR neutral current 0 9 N R S T Ammeter Switch R 0A CHR0 SGZEG SIS000 S/PR positions A CHR SGZEG SIS000 S/PR S - 0A C SGZE SIS000 S/PR A T A CAD SGZEG SIS000 S/PR + 0 N 9 N

14 "AS" Ammeter Switch Plate Type of Electrical Rating Switch SIS Handle Dimension Engraving Metering Switch Diagram Ith Reference Code (Black) (Refer Pg. ) R S T R S T Ammeter Switch 0A CHR0 SGZ9EG SIS000 S/PE positions A CHR SGZ9EG SIS000 S/PE A CT phase wire AMMETER 9 R S T Ammeter Switch R S T 0A CHR0 SGZ9EG SIS000 S/PE R S T A positions A CHR SGZ9EG SIS000 S/PE CT with transducer phase wire 9 0 T R AMMETER R S T Ammeter Switch 0A CHR0 SGZ9EG SIS000 S/PE positions A CHR SGZ9EG SIS000 S/PE CT phase wire 9 0 A R S T 9 T S R R S T Ammeter Switch A 0A CHR0 SGZ9EG SIS000 S/PE positions A CHR SGZ9EG SIS000 S/PE CT with transducer phase wire 9 R S T 0 T S R 9

15 "AS" Ammeter Switch Plate Type of Electrical Rating Switch SIS Handle Dimension Engraving Metering Switch Diagram Ith Reference Code (Black) (Refer Pg. ) 9 AMMETER S R T R S T R S T Ammeter Switch 0A CHR0 SGZ9EG SIS000 S/PE A positions A CHR SGZ9EG SIS000 S/PE CT 9 0 phase wire 9 AMMETER S R T R S T R S T N Ammeter Switch 0A CHR0 SGZ9EG SIS000 S/PE positions A CHR SGZ9EG SIS000 S/PE CT A phase wire 9 0 0

16 " VS " Voltmeter Switch Plate Type of Electrical Rating Switch SIS Handle Dimension Engraving Metering Switch Diagram Ith Reference Code (Black) (Refer Pg. ) VOLTMETER TR RS 9 Voltmeter Switch 0A CHR0 SGZEG SIS000 S/PR positions RS ST TR A CHR SGZEG SIS000 S/PR Phase to phase voltage 0A C SGZE SIS000 S/PR R T S V ST VOLTMETER RS RN ST SN 9 Voltmeter Switch 0A CHR0 SGZEG SIS000 S/PR TR ST RS RN SN TN positions A CHR SGZEG SIS000 S/PR Phase to phase and T 0A C SGZE SIS000 S/PR phase to neutral voltage V S TR TN 9 0 R N VOLTMETER RS RN ST SN TR TN 9 Voltmeter Switch 0A CHR0 SGZEG SIS000 S/PR RS positions A CHR SGZEG SIS000 S/PR - + Phase to phase and A CAD SGZEG SIS000 S/PR TR phase to neutral voltage - + 0A C SGZE SIS000 S/PR through transducers V SN - + ST - + TN - + RN RS ST TR TN SN RN 0 0

17 " VS " Voltmeter Switch Plate Type of Electrical Rating Switch SIS Handle Dimension Engraving Metering Switch Diagram Ith Reference Code (Black) (Refer Pg. ) Voltmeter Switch R S T RS ST TR 0A CHR0 SGZEG SIS000 S/PE positions V A CHR SGZEG SIS000 S/PE Phase to phase voltage via PT phase wire system 9 VOLTMETER ST RS TR R S T Voltmeter Switch RS ST TR 0A CHR0 SGZEG SIS000 S/PE positions A CHR SGZEG SIS000 S/PE Phase to phase voltage V via PT phase wire system R S T N Voltmeter Switch RN SN TN 0A CHR0 SGZEG SIS000 S/PE positions A CHR SGZEG SIS000 S/PE Phase to neutral voltage V via PT phase wire system 9 VOLTMETER ST RS TR Voltmeter Switch R S T 0A CHR0 SGZ9EG SIS000 S/PE RS ST TR positions A CHR SGZ9EG SIS000 S/PE Phase tophase voltage V via PT phase wire system 9 VOLTMETER RS RN ST SN TR TN R S T N Voltmeter Switch TR ST RS RN SN TN 0A CHR0 A00/SGZ90*EG - S/PE positions A CHR A00/SGZ90*EG - S/PE Phase tophase and V Phase to neutral voltage phase wire system 0 9

18 " VS + AS " Voltmeter /Ammeter Switch Plate Type of Electrical Rating Switch SIS Handle Dimension Engraving Metering Switch Diagram Ith Reference Code (Black) (Refer Pg. ) R R-S S S-T T T-R R S T PT R S T RS ST TR Voltmeter/Ammeter 0A CHR0 SGZ90EG SIS000 S/PE positions A CHR SGZ90EG SIS000 S/PE V Phase to phase voltage via PT 9 0 CT A phase wire system 9 0 CT

19 DISCREPANCY SWITCH mimic panel and the actual field condition exists. c. To TRIP the circuit breaker ( to close the tripping circuit of the breaker ) at position "A", it is necessary to Push-in and Turn the handle to position "AB". The handle will spring return back to position "A " when release. The double action of Push-in and Turn is a safety precaution to prevent accidental operation of the Discrepancy Switch. Auxiliary contacts which operates when the handle is Push-in can be incorporated for additional safety circuits. d. To "CLOSE" the circuit breaker ( to activate the closing circuit of the breaker) at position "E", it is necessary to Push-in and Turn the handle to position "EB". The handle will spring return back to position "E" when release. The double action of Push-in and Turn is a safety precaution to prevent accidental operation of the Discrepancy Switch. Auxiliary contacts which operates when the handle is Push-in can be incorporated for additional safety circuits ( for Size S0 and S switch only ) A APPLICATION AB The Discrepancy Switch allows operation of the circuit breakers remotely from the control room. An illuminated handle on the discrepancy switch mounted on the mimic panel would shows the discrepancy between what is shown on the mimic diagram and the real condition of the circuit breaker. In the normal condition, none of the panel lights would light up. Circuit breakers are controlled by a negative lighting system. Hence when the lamp is lighted " ON", means there is a discrepancy between what is indicated in the control room and the actual field condition of the circuit breaker. From the above requirement, a large number of push-buttons, selector switches and pilot lamps would normally be required to fulfil the control functions. A discrepancy switch with multi-function can combine all these requirements in a single cam switch. PRINCIPLE OF OPERATION - Fig. A typical Discrepancy Switch would have four positions AB, A, E and EB. Position A and B are stay-put positions. To turn from position A to AB, it is necessary to Push-in at position A and then turn to position AB. Handle will spring-return back to position A when release. Similarly for positions E and EB. Mechanical interlocks will prevent turning of the handle from A to B when handle is Push-in. The switch would operated at two levels: a. The handle can be Turn from A to B to give a semaphore indication in the mimic panel. b. The handle will light up whenever any discrepancies between the condition on the E EB Fig. - Principle of operation

20 DISCREPANCY SWITCH Push-in Level EB Normal Level E AB A. TYPES OF DISCREPANCY SWITCH Kraus & Naimer discrepancy switch are available in the following sizes: a. Size S00 - for switch rating up to 0A. These switches are commonly used in mimic and mosaic panels. Low voltage switches of gold contact ( Type CA- ) are available for electronics and thermocouple circuits. b. Size S0 - for switch rating from A to A/AC. These switches are commonly used in mimic and mosaic panels. Low voltage switches of silver H- Bridge contact ( type CAD ) or gold H-Bridge contact ( type CAD) are available for electronics and thermocouple circuits. c. Size S - for switch rating of 0A to A AC. These switches are especially suitable for switching highly inductive loads e.g. circuit breaker coils etc. Fig. - Handle movement. FEATURES OF DISCREPANCY SWITCH a. Ratings available: Size S00-0A Size S0 - A to A AC Size S - 0A to A AC. b. The lighting system is placed directly behind a translucent handle and consist of lamps connected in series/parallel network as follows: Size S00 consist of a single lamp Size S0 consist of lamps with rating of.w each. Size S consist of lamps with rating of.w each. The advantage of having more than one lamp is that should one lamp fails, the other lamps connected in the parallel network still operates but with reduced illumination in case a discrepancy condition occurs. c. Auxiliary push-button contacts can be operated which operates when the handle is Push-in ( S0 AND S only ) d. Residual or slip-clutch contact can be incorporated on request ( S0 and S only ).

21 DISCREPANCY SWITCH FOR MOSIAC Mounting - Size S00. DISCREPANCY SWITCH for Mosaic Panel Mounting - Size S00 Mosiac Grid Lock nut Adaptor Lamp Lamp holder Lamp terminals Fig. c- Rear mounting Fig. d- Front mounting by lock nut/adaptor on mosaic grid Fig. a - M/M Mounting a. General information. Type M and M mountings are designed for used on mosaic panel with x mm tiles - Type M x mm tiles - Type M The switch is slot in between the grids of the mosaic panel and mounted on the grids and clamp on to the grids by means of the hexagonal nut from the front. Access to the lamp is by removing the illuminated handle. ø Mosiac tile Translucent handle Fig. e- Tile mounting hole Fig. f - Handle mounted on tile. Handle Mosiac tile Lamp Mosiac aluminium grid Cast alumnium casing mounted on grid Switch L L Lamp terminals b. Switch Ratings The switch contacts operate when the handle is turn. The switches are suitable for both AC and DC switching. Type CA- with gold contacts are specially suitable for : Low voltage switching of electronics and thermocouple circuits due to it's low contact resistance. Corrosive environment where the gold contact prevent oxidation of the contact surface which can increases contact resistance. In selecting the switch model for DC switching, the selection of appropriate switch depends on: The DC supply voltage The DC load current The type of load - resistive/inductive In selecting the switch model for low voltage switching, the Dry Circuit Rating should not be exceeded. The Dry Circuit Rating refers to the relationship between the supply voltage and load current. If the value exceeds, arcing may occur which would remove the layer of gold on the contact. Fig. b- Constructional details of M and M mounting

22 DISCREPANCY SWITCH for MOSIAC Mounting - Size S00 AC Switching Capacity Switch Type CG Nominal Voltage V 00 Nominal Current AC A 0 AC/V kw. Fig. d- AC Switching Capacity DC Switching Capacity DC T = ms Resistive Load Number.of Series Contact CG V V 9V 0V 0A V 9V 0V 90V A 0V 0V 0V 0V.A Fig. e - DC Switching Capacity - resistive load DC Switching Capacity T = 0 ms Inductive Load Number of Series Contact CG V V 9V 0V A V 9V 0V 90V A 0V 0V 0V 0V A c. Lighting System for mounting Type M and M A single lamp is mounted directly below the translucent handle. The lamp used may be either filament lamp ( Type T.K ) or LED which is available in red, yellow and green colour. Maximum voltage possible is 0V for filament and V for LED. i. Filament Lamp Supply Voltage Lamp Rating Lamp Reference V 0. W 999 T.K/V V 0. W 999 T.K/V V 0. W 999 T.K/V V 0. W 999 T.K/V V 0. W 999 T.K/V 0V 0. W 999 T.K/0V ii. LED Lamp Supply Voltage Yellow LED Red LED Green LED V LE--T.Y LE--T.R LE--T.G Fig. f - DC Switching Capacity - inductive load Dry Circuit Rating CG- V V V V V 0V 0V AC A 0.A 0.A 0.A 0.A 0.A 0.A Fig. g - Dry Circuit Rating Maximum Number of Contacts Possible Switch Type Maximum Contacts Maximum Stages CG

23 DISCREPANCY SWITCH for MOSIAC Mounting - SIZE S0. DISCREPANCY SWITCH for Mosaic Mounting - Size S0 0 0 Fig. Mounting on 0x0mm mosaic tile Fig. - Mounting on x mosaic tile a. General Information The Type M0 mounting is design for mounting Size S0 discrepancy switch on mosaic tiles with the following dimensions: 0 x 0mm x mm The switch is screwed on the to the aluminium grid of the mosaic panel from the rear as well as well as held by two screws from the front via the mosaic tile and clamp ring ( Refer Fig. 9). The translucent handle is screwed on to the aluminium shaft which operates the auxiliary contacts when the handle is Push-in and the switch contacts when the handle is turned. Removal of the handle from the shaft allows access to the lamps from the front of the panel. Mosiac tile Mosiac aluminium grid Fig. 9 - Type M0 mounting method Translucent Handle Clamping Disk Lamp Holder Switch Contacts - Turn to Operate Clamp Disk Translucent Handle 0. ø Escutcheon Plate Switch Shaft Lamps Push to Operate Interlock & Auxillary Contacts Fig - Type M0 Mounting Residual Contact ( Optional ) Clamp Disk screwed to mosiac tile Mosiac Tile Fig. 0a - Mounting hole Fig. 0b - Switch front Fig0c - Final mounting on mosaic tile by two screws on mosaic tile.

24 DISCREPANCY SWITCH for MOSIAC Mounting - Size S0 Lamp holder Lamps voltage, the lamps can be connected in series/parallel circuit. ( Fig. ) The advantage of this arrangement is that should any of the lamps fails, other lamps in the parallel circuit will still lights up to indicate discrepancy reducing the danger of not knowing that there is a discrepancy fault due to lamp failures. In addition, high bright LED lamps type LE.B are available in T.K. Ratings available for LED/T.K are VDC/mA and VDC/mA and available in Red, Yellow and Green Colour. Switch shaft c. Lamps for S0 Discrepancy Switch Fig. a - M0 Front Mounting Fig. b- M0 Front mounting -. mm ø -mm Fig. a - Filament lamp type T.K Fig a - Type M0 - lamp holder b. Lighting System Fig. b - Type M0 rear mounting i. Filament Lamp Supply Lamp Lamp Voltage Rating Reference V.W 999 T.K/ V.W 999 T.K/ V.W 999 T.K/ V.W 999 T.K/ V.W 999 T.K/ 0V.W 999 T.K/0 0V/.W 0V/.W Fig. b - Types of filament lamp ii. LED Lamp Voltage Yellow LED Red LED Green LED 0VDC Fig. - Size S0 Lighting System The Size S0 lighting system consist of a lamp holder with four socket outlets to accommodate telephone bulbs type T.K Voltages available for the lamps are V, V, V, 0V, V, V, V and 0V of rating. watts per lamp. Depending on the control 9 V LE-.B-Y LE-.B-R LE-.B-G V LE-.B-Y LE-.B-R LE-.B-G Fig. c - Types of LED

25 DISCREPANCY SWITCH for MOSIAC Mounting - SIZE S0 D. Coding of Lamp holders Q00 S0 Q00 / RKD00 e. Push To Turn Interlocks and Auxiliary Contacts The auxiliary contacts are rated at 0A and operates when the handle is Push-in. Up to a maximum of auxiliary contacts are available. S0 V0 / F / A - EL Number of Auxillary Contacts NO NC Contacts 0 0 without contacts 0 contact 0 contact contact 0 contact 0 contact contact contact contact 0 contact 0 contact contact contact 0 contact contact contact 0 contact e. Switch Ratings Kraus & Naimer switches are design for both AC and DC switching. For DC switching, the selection of suitable switch type depends on: The DC Voltage The DC Load Current The type of Load - resistive or inductive. For rating on DC switching capacity, please refer to the information on "DC Switching Capacity" for C, CA and A switches respectively. It is possible to add residual contacts to give a self-holding effect by adding the optional extra M00 AC Switching Capacity Switch Size Type Rating/Ith S0 CHR0 0A S0 CHR A Fig. - Auxiliary contacts combination 0

26 DISCREPANCY SWITCH for PANEL Mounting - SIZE S0. DISCREPANCY SWITCH FOR PANEL MOUNTING - SIZE S0 Low voltage switches of silver contact ( Type CAD ) or gold contact ( Type CAD) for electronics and thermocouple circuits. For power switching of highly inductive loads e.g. circuit breaker coils. The types of mounting available are: Fig. a - Type FT Panel Mounting for switch Size S0 D ø D =.mm ø Fig. a - FT Mounting i. Type FTMounting ( Fig. a and Fig a. ) The front escutcheon is a black ring. A black escutcheon plate can be provided on request. Fig. b - Type FT Panel Mounting for switch Size S0 A Translucent handle Lamp Lamp Terminal Auxillary Contacts Switch Contacts Dismantling Tool SOE Q0 09 ( To remove Q0 switch body from handle) A Fig. c - Type FT/FT Mounting for Size S0 switch constructional details Fig b - FT Mounting a. Size S0 Discrepancy switches for mounting on panels and mimic are available for switch of ratings up to A and are suitable for: ii. Type FT Mounting ( Fig. b and Fig. b ) A square escutcheon plate x mm is provided which allows engravings.

27 DISCREPANCY SWITCH for PANEL Mounting - SIZE S0 iii. Type FH Mounting ( Fig. b ) Similar to Type FT except the escutcheon plate size is x mm. b. Handle The translucent handle is screwed on to the aluminium shaft which operates the auxiliary contacts when the handle is Push-in and the switch contacts when the handle is turned. Removal of the handle from the shaft allows access to the lamps from the front of the panel c. Mounting System The switch is mounted on to the panel by means of a single hole mounting 0mm Ø with locking nut.( Fig. c ) d. Lighting System The Size S0 lighting system consist of a lamp holder with a socket outlets to accommodate one lamp of Type BA9 base Voltages available for the lamps are V, V, V,0V and 0V In addition, high bright LED lamps type are available. Ratings available for LED are V, V, V, 0V and 0VDC. h. Switch Ratings Kraus & Naimer switches are design for both AC and DC switching. For DC switching, the selection of suitable switch type depends on: The DC Voltage The DC Load Current The type of Load - resistive or inductive. For rating on DC switching capacity, please refer to the information on "DC Switching Capacity" for C, CA and A switches respectively. It is possible to add residual contacts to give a self-holding effect by adding the slip clutch optional extra M00 i. AC Switching Capacity Switch Size Type Rating/Ith S0 CA0 0A S0 CA0 A S0 CA A S0 CHR0 0A S0 CHR A e. Auxiliary Contacts The auxiliary contacts are rated at 0A and operates when the handle is Push-in. Up to a maximum of auxiliary contacts are available. The type of contacts available are: Standard silver contacts Gold contacts for corrosive environments Gold H-Bridge contacts for low voltage application f. Dismantling Tool SOE Q0 09 To separate the switch body ( consisting of the switch stage, auxillary contacts and the lighting system) from the handle/mounting system, a dismantling tool is available. This tool is especially suitable : When mounting the switch body to the mounting system. When removing the switch body from the mounting system for the purpose of removing/changing the lamp from the lamp holder. g. LampRemover 999 LZ This tool allow easy removal of the lamp from the lamp holder

28 DISCREPANCY SWITCH for PANEL Mounting - SIZE S0/S \. DISCREPANCY SWITCH FOR PANEL MOUNTING - SIZE S0/S b. Handle The translucent handle is screwed on to the aluminium shaft which operates the auxiliary contacts when the handle is Push-in and the switch contacts when the handle is turned. Removal of the handle from the shaft allows access to the lamps from the front of the panel c. Clamping System Fig. a - Type EL Panel Mounting for switch Size S0 Fig. - Handle and clamping system The switch is mounted on to the panel by means of a clamping system which consist of the clamping disk, pressing ring and the lamp-holder. Mounting and tightening of the switch to the panel is by means of the four screws fitted on the lamp holder ( Fig. ). d. Lighting System Translucent Handle Clamping Disk Front Plate Lamp Holder Push to Operate Interlock & Auxillary Contacts Switch Contacts - Turn to Operate Residual Contact ( Optional ) Fig. b - Type EL Mounting for Size S0 switch constructional details -. mm ø -mm 0V/.W 0VDC 0V/.W a. Size S0 Discrepancy switches with large Size S handles for mounting on panels and mimic are available for switch of ratings up to A and suitable for Low voltage switches of silver contact ( Type CAD ) or gold contact ( Type CAD) for electronics and thermocouple circuits. For power switching of highly inductive loads e.g. circuit breaker coils etc. Fig. 9a - Filament lamp type T.K Fig. 9b- Size S0 Lighting System The Size S lighting system consist of a lamp holder with four socket outlets to accommodate telephone bulbs type T.K ( Fig 9a ) Voltages available for the lamps

29 DISCREPANCY SWITCH for PANEL Mounting - SIZE S0/S are V, V, V, 0V, V, V, V and 0V of rating. watts per lamp. Depending on the control voltage, the lamps can be connected in series/parallel circuit. ( Fig. 9b ) The advantage of this arrangement is that should any of the lamps fails, other lamps in the parallel circuit will still lights up to indicate discrepancy reducing the danger of not knowing that there is a discrepancy fault due to lamp failures. In addition, high bright LED lamps type LE.B are available in T.K. Ratings available for LED/T.K are VDC/mA and VDC/mA and available in Red, Yellow and Green Colour. e. Coding of Lamp holders Q00 S0 Q00 / RKD00 The DC Load Current The type of Load - resistive or inductive. For rating on DC switching capacity, please refer to the information on "DC Switching Capacity" for C, CA and A switches respectively. It is possible to add residual contacts to give a self-holding effect by adding the optional extra M00 i. AC Switching Capacity Switch Size Type Rating/Ith Maximum Number of Stages S0 CA0 0A S0 CA0 A S0 CHR0 0A S0 CHR A f. Push to Turn Interlock and Auxiliary Contacts The auxiliary contacts are rated at 0A and operates when the handle is Push-in. Up to a maximum of auxiliary contacts are available. S0 V0 / F / A - EL Number of Auxillary Contacts NO NC Contacts 0 0 without contacts 0 contact 0 contact contact 0 contact 0 contact contact contact contact 0 contact 0 contact contact contact 0 contact contact contact 0 contact e. Switch Ratings Kraus & Naimer switches are design for both AC and DC switching. For DC switching, the selection of suitable switch type depends on: The DC Voltage

30 DISCREPANCY SWITCH for PANEL Mounting - SIZE S c. Clamping System. DISCREPANCY SWITCH FOR PANEL MOUNTING - SIZE S D ø D = 0mm ø Fig. 0a - Type EL Panel Mounting for switch Size Fig. - Handle and clamping system The switch is mounted on to the panel by means of a clamping system which consist of the clamping disk, pressing ring and the lamp-holder. Mounting and tightening of the switch to the panel is by means of the four screws fitted on the lamp holder ( Fig. ). d. Lighting System V/.W V/.W V/.W Translucent Handle Clamping Disk Front Plate Lamp Holder Push to Operate Interlock & Auxillary Contacts Switch Contacts - Turn to Operate Fig. 0b - Type EL Mounting for Size S switch constructional details Residual Contact ( Optional ) a. Size S Discrepancy switches for mounting on panels and mimic are available for switch of ratings up to 0A and suitable for power switching of highly inductive loads e.g. circuit breaker coils etc. b. Handle The translucent handle is screwed on to the aluminium shaft which operates the auxiliary contacts when the handle is Push-in and the switch contacts when the handle is turned. Removal of the handle from the shaft allows access to the lamps from the front of the panel -. mm ø -mm 0VDC Fig. a - Filament lamp type T.K Fig. b- Size S Lighting System The Size S lighting system consist of a lamp holder with six socket outlets to accommodate telephone bulbs type T.K( Fig. a ) Voltages available for the lamps are V, V, V, 0V, V, V, V and 0V of rating. watts per lamp. Depending on the control voltage, the lamps can be connected in series/parallel circuit. ( Fig. b ) The advantage of this arrangement is that should any of the lamps fails, other lamps in the parallel circuit will still lights up to indicate discrepancy reducing the danger of not knowing that there is a discrepancy fault due to lamp failures. In addition, high bright LED lamps type LE.B are available in T.K. Ratings available for LED/T.K are VDC/mA and VDC/mA and available in Red, Yellow

31 DISCREPANCY SWITCH for PANEL Mounting - SIZE S and Green Colour. e. Coding of Lamp holders Q00 S Q00 / A B Color of front ring... Black ( with black aluminium escutcheon plate... Black ring only f. Push to Turn Interlock and Auxiliary Contacts The auxiliary contacts are rated at 0A and operates when the handle is Push-in. Up to a maximum of auxiliary contacts are available. extra M00 i. AC Switching Capacity Switch Size Type Rating/Ith S CA0B 0A S CA0B A S CAB A S CHR0B 0A S CHRB A S C 0A S C A S C 0A S V0 / F / A - EL Number of Auxillary Contacts NO NC Contacts 0 0 without contacts 0 contact 0 contact contact 0 contact 0 contact contact contact contact 0 contact 0 contact contact contact 0 contact contact contact 0 contact e. Switch Ratings Kraus & Naimer switches are design for both AC and DC switching. For DC switching, the selection of suitable switch type depends on: The DC Voltage The DC Load Current The type of Load - resistive or inductive. For rating on DC switching capacity, please refer to the information on "DC Switching Capacity" for C, CA and A switches respectively. It is possible to add residual contacts to give a self-holding effect by adding the optional

32 DISCREPANCY SWITCH for PANEL Mounting. ORDERING PROCEDURE P ALARM R O CLOSE condition. The lamp will cut off only when the handle is turn to the TRIP position. This removes the discrepancy between the mimic diagram and the true position of the breaker. Pushing-in and Turning the discrepancy switch handle at the TRIP position will activates the tripping circuit of the breaker Push-in and Turning the handle at the 'CLOSE" position will activates the closing circuit of the breaker. The switching configuration required is as shown in Fig.. Contact rating required is A. Auxiliary contact required is NO + NC. Voltage of the lighting system is 0V EB E A AB N Closed contact Continous contact Residual contact Fig. - Typical Discrepancy Switch Circuit Fig. - Required contact configuration a. Typical Specifications When the handle of a discrepancy switch is turn 90 degrees, the mimic diagram of the control panel will immediately indicate any circuit interruptions. The handle of the discrepancy switch will be illuminated to indicate a discrepancy between the condition as indicated in the mimic panel and the actual condition of the circuit breaker. For example, if the circuit breaker and the discrepancy switch handle is in the is in the "CLOSED" position, the handle will not be illuminated because there is no discrepancy between what is shown in the mimic panel and the actual condition of the circuit breaker. If the circuit breaker TRIP due to a fault condition, the handle of the discrepancy switch will be illuminated because a discrepancy arise i.e. the handle is still in the 9. HOW TO ORDER - Size S0 When ordering a Discrepancy Switch, the following are to be provided: a. Switch Type selected according to the control voltage, load current and the type of load. In this case CHR would be suitable b. The Switching Configuration required ( refer Fig. ). The switch can be given a special switch reference : CHR SGxxx c. The number of Auxiliary contacts required. In this case NO + NC auxiliary contact are required. As no engravings are required on the escutcheon plate, FT

33 DISCREPANCY SWITCH for PANEL Mounting mounting type of lamp holder would be suitable.hence the coding for the Control & Indicator Device with TURNING/PUSHING facility Iis as follows: S0 Q0/FA d. The Ordering Code as follows: Reference Description CHR SGxxx Switch S0 Q0/FA Control & Indicator device with single hole FT! mounting Operation by TURNING/PUSHING 999 BA9/0V 0V Filament Lamp 0. HOW TO ORDER - Size S0/S When ordering a Discrepancy Switch, the following are to be provided: a. Switch Type selected according to the control voltage, load current and the type of load. In this case CHR would be suitable b. The Switching Configuration required ( refer Fig. ). The switch can be given a special switch reference : CHR SGxxx c. The number of Auxiliary contacts required. In this case NO + NC auxiliary contact are required. Hence the coding for the Push to Turn Interlock Device which housed the auxiliary contacts is: S0 V0/F/A-EL d. EL mounting type of lamp holder would be suitable. Hence the coding for the lamp holder is: S0 Q00/RKD00. HOW TO ORDER - Size S When ordering a Discrepancy Switch, the following are to be provided: a. Switch Type selected according to the control voltage, load current and the type of load In this case CHRB would be suitable b. The Switching Configuration required. The switch can be given a special switch reference : CHRB SGxxx c. The number of Auxiliary contacts required. In this case NO + NC auxiliary contact are required. Hence the coding for the Push to Turn Interlock Device which housed the auxiliary contacts is: S V0/F/A-EL d. EL mounting type of lamp holder would be suitable. Hence the coding for the lamp holder is: S Q00/A/B e. The Ordering Code as follows: Reference Description CHR SGxxx Switch S0 V0/F/A-EL Push to Turn Interlock Device & N0 + NC aux. contact x 999 T.K/0 Filament Lamps S Q00/A/B Lamp holder e. The Ordering Code as follows: Reference Description CHR SGxxx Switch S0 V0/F/A-EL Push to Turn Interlock Device & N0+ NC aux. contact x 999 T.K/0 Filament Lamps S0 Q00/RKD00 Lamp holder

34 DISCREPANCY SWITCH for PANEL Mounting - Other Versions Discrepancy Switch with Key Lock Device Fitted with separate drive key lock device Type V0 which willallow operation of the discrepancy switch only by authorised personnels. Key lock device available with differnt types of locks Available in Size S0 and S. Switch Lamp holder Key Lock Device Discrepancy Switch with key lock Size S0 Discrepancy Switch with key lock Size S 9

35 Discrepancy Switch - Size S0 Panel Mount Mounting Electrical Rating Switch SIS Switch Handle Mounting Type Drawing Ith Reference Code Depth Size Hole A B 0A CHR0 SGC0*EL SIS000 0 S0 0. ø Size S0 handle without plate Auxillary contacts A CHR SGC0*EL SIS000 0 S0 0. ø Size S0 handle with plate 0

36 Discrepancy Switch - Size S Panel Mount Mounting Electrical Rating Switch SIS Switch Handle Mounting Type Drawing Ith Reference Code Depth Size Hole OPEN CLOSE 0A CHR0 RK0*EL SIS000 S ø 0 Ø A CHR RK0*EL SIS000 S ø 0A C RK0*EL SIS000 S Ø Size S handle without plate OPEN CLOSE 0A CHR0 RK0*EL SIS000 S ø A CHR RK0*EL SIS000 S ø 9 0 0A C RK0*EL SIS000 S Ø OPEN CLOSE Size S handle with plate 0A CHR0 RK0*EL SIS000 S Ø 9 0 A CHR RK0*EL SIS000 S Ø 0A C RK0*EL SIS000 S Ø OPEN CLOSE 0A CHR0 RK0*EL SIS000 S Ø A CHR RK0*EL SIS000 S0 Ø 9 0 0A C RK0*EL SIS000 S Ø OPEN CLOSE 0A CHR0 RK0*EL SIS000 S Ø A CHR RK0*EL SIS000 S Ø 0A C RK0*EL SIS000 S Ø 9 0

37 Discrepancy Switch - - For mounting on Mosiac panels xmm, 0 x 0mm or x mm Mounting Electrical Rating Switch SIS Switch Handle Mounting Type Drawing Ith Reference Code Depth Size Hole OPEN CLOSE ø 0A CG RK0E SIS000 S00 ø 0A CHR0 RK0*EL SIS000 S0 0 ø A CHR RK0*EL SIS000 S0 0 Ø OPEN CLOSE S00 size for mosiac tile 0A CG RK0E SIS000 S00 ø x mm 0A CHR0 RK0*EL SIS000 S0 0 ø A CHR RK0*EL SIS000 S0 0 Ø 9 0 OPEN CLOSE ø 0A CG RK0E SIS000 S00 ø 0A CHR0 RK0*EL SIS000 S0 0 ø A CHR RK0*EL SIS000 S0 0 Ø 9 0 OPEN CLOSE S0 Size for mosiac tile 0A CG RK0E SIS000 S00 ø 0 x 0 mm 0A CHR0 RK0*EL SIS000 S0 0 ø x mm A CHR RK0*EL SIS000 S0 0 Ø 9 0 OPEN CLOSE 0A CG RK0E SIS000 S00 ø 0A CHR0 RK0*EL SIS000 S0 0 ø A CHR RK0*EL SIS000 S0 0 Ø 9 0

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