NGRM700. Neutral Grounding Resistor Monitor

Transcription

1 M700 eutra Grounding Resistor Monitor M700_D00292_02_D_XXE/

2 M700 eutra Grounding Resistor Monitor Product description The M700 is ony intended for use in high-resistance grounded systems. In these systems, the M700 monitors the current through the neutra-grounding resistor (), the votage between the star point of the transformer and earth (votage drop across the ), the condition of the, ine-to-ine and ine-to-earth votages. LIETRAXX M700 Device features Determination of R with passive and active measurement methods Continuous monitoring of the R even if the instaation is de-energised; Aarm or trip on ground faut Monitoring of the current I Monitoring of the votage U Phase-to-ground faut indication (optiona; up to 690 V direct couping, otherwise via potentia transformers) Ethernet communication Web server Language seection (German, Engish GB and US, Spanish, French) Test button (interna, externa) with/without tripping FFT anaysis of the measuring signas Puser for manua ground faut ocation Reay for detection of ground fauts and resistor fauts Reay for shutdown of the instaation after a configurabe time Can be combined with RCMS for automatic shutdown of feeders Graphica user interface Wide suppy votage range (24 to 240 Vac/Vdc) Range of use up to 5000 m AMSL Faut/History memory Anaogue output of measured vaues (0 10 V, 4 20 ma, etc., seectabe parameters) Detachabe HMI for door mounting Password protection Tripping on RMS, fundamenta component signa or harmonics Detection of AC and DC ground fauts i Systems with a high-resistance grounded star point can be used when an interruption of the power suppy woud invove excessive costs due to production stoppage (e.g. automotive production, chemica industry). The ground faut that occurs between a phase and earth does not ead to a faiure of the power suppy in these systems. A ground faut must be detected and eiminated as quicy as possibe, since the occurrence of another ground faut in a second phase woud ead to a tripping of the overcurrent protective device. In order to meet the requirements of appicabe standards, the equipment must be adjusted to oca equipment and operating conditions by means of customised parameter settings. Pease heed the imits of the range of appication indicated in the technica data. Any other use than that described in this manua is regarded as improper. Intended use incudes foowing a the instructions in this operating manua. Function The M700 monitors resistance R, neutra votage U and current I. resistance is monitored using an active and a passive procedure: active passive The device generates an active test puse and measures R even if the instaation is de-energised. Ony for energised instaations: The resistance R is determined when I or U exceeds an interna threshod. The device measures the existing current and votage and cacuates R. In the case of the auto method, monitoring switches automaticay between active and passive when the measured vaue exceeds or fas beow the interna threshod. The threshod is 15 % of the nomina vaue and can be adjusted by Bender service if required. A short circuit or interruption of the is reiaby detected in an energised as we as a de-energised instaation with the active measurement method. When the passive method is seected, no switching of the monitoring taes pace. o monitoring of the occurs whie the instaation is de-energised. The reay switches from aarm state to operating state when the measured resistance R is within the configured threshods. A ground faut is signaed via the corresponding ground-faut reay when I or U exceeds the seectabe threshods. After the adjustabe deay time has eapsed, the instaation can be shut down by means of the trip reay. A connection to instaations ranging from 400 V 25 V is possibe via the appropriate CD-series couping device. The I is measured via (universa) measuring current transformers for 5 A or 50 ma secondary. With the conversion ratio of the used measuring current transformer the current measurement is internay set in such a way that it adjusts best to I. The phase-votage monitoring function can be used to indicate which phase has the ground faut. Direct couping is possibe up to a system votage of 690 V. For higher votages use potentia transformers (PT). The conversion ratio is adjustabe. Certifications 2 M700_D00292_02_D_XXE/

3 User interface FP200-M O SERVICE TRIPPED FAULT GROUD FAULT FP200 * < RESET < IFO < MEU ESC TEST < DATA OK Dispay eements 1 - O Operation LED, green; on when power suppy is avaiabe 2 - The LC dispay shows device and measurement information. 3 - SERVICE The LED is on when there is either a device faut or a connection faut, and when the device is in maintenance mode. 4 - TRIPPED The LED is on when the trip reay has been tripped due to an faut, ground faut or a system error. 5 - FAULT The LED fashes in case of a prewarning: faut detected, reay has tripped, trip reay has not tripped yet (t trip eapses). 6 - GROUD FAULT The LED is on when an faut has been detected. Trip reay and reay have tripped. The LED fashes in case of a prewarning: ground faut detected, ground-faut reay has tripped, trip reay has not tripped yet (t GF trip eapses). The LED is on: ground faut detected, trip reay has tripped, instaation has not been shut down yet. Device buttons 7 - avigates up in a ist or increases a vaue. 8 - MEU Opens the device menu. ESC 9 - RESET Resets aarms. Cances the current process or navigates one step bac in the device menu. avigates bacwards (e.g. to the previous setting step) or seects parameter TEST Starts the device sef test. avigates forwards (e.g. to the next setting step) or seects parameter IFO Shows information. avigates down in a ist or reduces a vaue DATA Indicates data and vaues. OK 13 - Interface Confirms an action or a seection ETH Ethernet interface 15 - R on/off Terminating resistor for A/B (Modbus RTU) Buzzer Rear side REMOTE X3 Active in case of aarm and/or test RJ45 port for connection of FP200-M to encosure Without function M700_D00292_02_D_XXE/

4 Connection star connection: U sys 690 V For these votages, the phase monitor of the M700 can be connected directy to the conductors to be monitored. Circuit breaer L1 L2 L3 CT 50mA 5A C Ground faut faut Trip L1 L2 L3 AC/DC V Rs (G1) CD... E (G) RS E M700 FP200-M A1 A2 Dig. I/OUT Ethernet i The connection of the CD-series couping device shoud be as cose to the transformer star point as possibe. Connection Star connection: U sys 690 V with puser Circuit breaer L1 L2 L3 CT 50mA 5A C Ground faut faut Trip L1 L2 L3 AC/DC V R P Rs (G1) CD... E (G) RS E M700 FP200-M A1 A2 Puser OUT Dig. I/OUT Ethernet R P = R Puser i The connection of the CD-series couping device shoud be as cose to the transformer star point as possibe. An intermediate reay may be required between the power contactor of the puser and the digita output at of the FP200-M. 4 M700_D00292_02_D_XXE/

5 Connection star connection: U sys > 690 V For these votages, the phase monitor of the M700 can ony be connected to the conductors to be monitored via potentia transformers (PT). Circuit breaer L1 L2 L3 PT * CT 50mA 5A C Ground faut faut Trip L1 L2 L3 AC/DC V Rs (G1) CD... E (G) RS E M700 FP200-M A1 A2 Dig. I/OUT Ethernet ote: * PT ratio "primary: secondary" can be adjusted in the M700. i The connection of the CD-series couping device shoud be as cose to the transformer star point as possibe Connection artificia neutra (deta connection): zigzag transformer If no star point is avaiabe, the foowing circuit can create an artificia neutra. Circuit breaer L1 L2 L3 CT 50mA / 5A C Ground faut faut Trip L1 L2 L3 AC/DC V CD... Rs (G1) R S M700 A1 A2 E (G) FP200-M E Dig. I/OUT Ethernet M700_D00292_02_D_XXE/

6 Connectors CD CD1000 CD5000 G1 CD CD14400 CD25000 Rs Connection to star point G1, RS Connection to RS of the M700 G, E Connection to E of the M700 and to the protective earth conductor of the instaation (PE) G E Measuring current transformer connection Depending on the system to be monitored, a suitabe measuring current transformer has to be chosen. A common measuring current transformers (50 ma or 5 A on the secondary side) can be used. The foowing tabe heps you with the choice: System type AC + DC AC AC I 1 10 A 5 25 A 5 25 A f Hz Hz 50/60 Hz Conversion ratio 600:1 600:1 60:5 Length connecting cabes max. 10 m max. 40 m max. 25 m (4 mm²) max. 40 m (6 mm²) I Δn W35 120AB W...AB W W1-S35 W5-S210 W... CTB31 41 CTB Type W...S... A420 CT: M700: 50 ma M700: 50 ma M700: 5 A CT: M700: C M700: C M700: C 6 M700_D00292_02_D_XXE/

7 Connection of reays (earth-faut, and trip reay) Connection to the interface Pin assignment interface : Output Q1 2 I1 Puser I Interna 24 V Connection to PLC I1 I2 I3 A B I2 I3 A B Reset I Test I Modbus RTU (A) Modbus RTU (B) Ground M+ Anaogue output +24 V, max. 100 ma Pu up 10 Ω + Q max. 300 ma, 24 V +24 V, max. 100 ma Pu up 10 Ω + Q In PLC M+ Q2 Q1 + Q2 Q1 + Open Coector: Puser OUT Open Coector: System condition (system heath) Output for suppy of externa reays (+24 V, max. 100 ma) FP200-M Externa suppy. e.g V +24 V, max. 100 ma + FP200-M : Input I1 3 The input is ony detected as activated after the contact has been activated for at east 150 ms. This way, short interference puses are ignored. Pu up 10 Ω Q max. 300 ma, 24 V + Switch open cosed Puser, active Reset, passive Test Active high I1 3 Switch open cosed Puser, active Reset, passive Test Active ow I1 3 FP200-M Connection to Q1, Q2: externa reay or PLC. i Observe maximum current vaues! The maximum output current on (+24 V) is 100 ma. In case of higher currents, the reays require an externa 24 V suppy. The maximum current on Q1 and Q2 is 300 ma each. Input I1 3: < 150 ms >150 ms < 150 ms >150 ms Potentia-free contact to ground or 0 V and 24 V in conjunction with a PLC : Anaogue output Anaogue output Mode Permissibe oad M + Current output A 0 20 ma 600 Ω 4 20 ma 600 Ω μa 4 Ω M + Votage output V 0 10 V 1 Ω 2 10 V 1 Ω M700_D00292_02_D_XXE/

8 Technica Data Insuation coordination according to IEC /IEC /DI E Definitions Measuring circuit 1 (IC1) (L1, L2, L3) Suppy circuit (IC2) (A1, A2) Measuring circuit/contro circuit (IC3) (RS, E, CT), (, Ethernet) Output circuit 1 (IC4) (11, 12, 14) Output circuit 2 (IC5) (21, 22, 24) Output circuit 3 (IC6) (31, 32, 34) Rated votage 690 V Overvotage category III Rated impuse votage IC1/(IC2 6) 8 V IC2/(IC3 6) 4 V IC3/(IC4 6) 4 V IC4/(IC5 6) 4 V IC5/(IC6) 4 V Rated insuation votage IC1/(IC2 6) 800 V IC2/(IC3 6) 250 V IC3/(IC4 6) 250 V IC4/(IC5 6) 250 V IC5/(IC6) 250 V Poution degree exterior 3 Safe isoation (reinforced insuation) between IC1/(IC2 6) overvotage category III, 800 V IC2/(IC3 6) overvotage category III, 300 V IC3/(IC4 6) overvotage category III, 300 V IC4/(IC5 6) overvotage category III, 300 V IC5/(IC6) overvotage category III, 300 V Votage tests (routine test) acc. to IEC IC2/(IC3 6) AC 2.2 V IC3/(IC4 6) AC 2.2 V IC4/(IC5 6) AC 2.2 V IC5/(IC6) AC 2.2 V Suppy votage omina suppy votage U s 2000 m AC/DC, V 2000 m (for UL appications) AC/DC, V 2000 m (for AS/ZS 2081) AC/DC, V > m AC/DC, V > m (for UL appications, AS/ZS 2081) AC/DC, V Toerance U s ±15 % Toerance U s (for UL appications) % Toerance U s (for AS/ZS 2081) % Frequency range DC, Hz Power consumption (typ. 50/60 Hz) 6.5 W/13 VA Phase monitoring omina measuring votage U n Measuring range Measurement accuracy Power consumption per phase Overoad capacity Input resistance PT ratio primary PT ratio secondary Measuring range with PT 3 AC V, CAT III 1.2 x U n ±1 % of U n 0.5 W 2 x U n continuous 1,76 MΩ 1 10, , V 25 V Monitoring R Measuring input R S Measuring range (with R S = 20 Ω) active Measurement uncertainty for T = C Measurement uncertainty for T = C Measuring range (with R S = 100 Ω) active Measurement uncertainty for T = C Measurement uncertainty for T = C Setting range R nom Response vaue R nom < 33 V RMS 0 4 Ω ±20 Ω ±40 Ω 0 4 Ω ±30 Ω ±80 Ω 15 Ω 2 Ω % R nom % R nom Response deay reay 7 s (±2.5 s) Response deay trip reay 0 60 s Monitoring I Measuring circuit 5 A omina measuring current I n Maximum continuous current Overoad capacity Measurement accuracy Load Measuring circuit 50 ma omina measuring current I n Maximum continuous current Overoad capacity Measurement accuracy Load Measuring circuits 5 A and 50 ma Response vaue I Response deay ground-faut reay Response deay trip reay (configurabe) Toerance t trip when set to RMS Fundamenta Harmonics Measuring current transformer ratio primary Measuring current transformer ratio secondary Measuring range Couping R S for U sys 4.3 V R S for U sys > 4.3 V Monitoring U DC/50/60 Hz/ Hz 5 A 2 x I n 10 x I n for 2 s ±2 % of I n 10 mω DC/50/60 Hz/ Hz 50 ma 2 x I n 10 x I n for 2 s ±2 % of I n 68 Ω % I nom 40 ms (±10 ms) 100 ms 24 h, ms ms (fiter time) ms (fiter time) 1 10, ,000 2 x I nom CD1000, CD1000-2, CD5000 (20 Ω) CD14400, CD25000 (100 Ω) U with R S = 20 Ω DC/50/60 Hz/ Hz; (400/ 3) (4300/ 3) V U with R S = 100 Ω DC/50/60 Hz/ Hz; > (4.3 / 3) (25/ 3) V Measuring range 1.2 x U nom Overoad capacity 2 x U for 10 s Measurement accuracy 2 % of U nom with U nom = (U sys (L-L)/ 3) Votage response vaue % U nom Response deay ground-faut reay 40 ms (±10 ms) Response deay trip reay (configurabe) 100 ms 24 h, Toerance t trip when set to RMS ms Fundamenta ms (fiter time) Harmonics ms (fiter time) PT ratio primary 1 10,000 PT ratio secondary 1 10,000 DC immunity in case of active R measurement with R S = 20 Ω DC ±12 V with R S = 100 Ω DC ±60 V 8 M700_D00292_02_D_XXE/

9 Digita inputs Gavanic separation Length connecting cabes U in Overoad capacity Digita outputs Gavanic separation Length connecting cabes Currents (sin) for each output Votage Overoad capacity Ground-faut,, trip reay no max. 10 m DC 0 V, 24 V V no max. 10 m max. 300 ma 24 V V Switching eements changeover contacts Operating mode configurabe fai-safe/non-fai-safe Eectrica endurance, number of cyces 10,000 Switching capacity 2000 VA/150 W Contact data acc. to IEC Rated operationa votage AC Utiisation category Rated operationa current AC Rated operationa current AC (for UL appications) Rated operationa votage DC Utiisation category Rated operationa current DC Minimum current Environment/EMC 250 V/250 V AC-13/AC-14 5 A/3 A 3 A/3 A 220/110/24 V DC12 0.1/0.2/1 A 1 ma at AC/DC > 10 V EMC immunity (IEC /IEC Ed. 3.0) DI E EMC emission (IEC /IEC Ed. 3.0) DI E Operating temperature C C (for UL appications) Humidity 98 % Cassification of cimatic conditions acc. to IEC Stationary use (IEC ) 3K5 (except condensation and formation of ice) Transport (IEC ) 2K3 ( C) (except condensation and formation of ice) Long-term storage (IEC ) 1K4 ( C) (except condensation and formation of ice) Cassification of mechanica conditions acc. to IEC 60721/IEC /DI E Stationary use Transport Long-term storage 3M7 2M2 1M3 Connection Screw-type terminas Tightening torque m (5 7 b-in) Conductor sizes AWG Stripping ength 7 mm rigid/fexibe mm² fexibe with ferrue with/without pastic seeve mm² Mutipe conductor, rigid mm² Mutipe conductor fexibe mm² Mutipe conductor fexibe with ferrue without pastic seeve mm² Mutipe conductor, fexibe with TWI ferrue with pastic seeve mm² Push-wire terminas Conductor sizes AWG Stripping ength 10 mm rigid/fexibe mm² fexibe with ferrue without pastic seeve mm² fexibe with ferrue with pastic seeve mm² Other Operating mode continuous operation Mounting dispay-oriented Atitude 5000 m AMSL Degree of protection, interna components (DI E 60529) IP30 Fammabiity cass UL 94V-0 Protective coating measurement equipment SL1307, UL fie E80315 Weight 1050 g M700_D00292_02_D_XXE/

10 Ordering information Suppy votage U S / Frequency range Hz Type Art. o. AC DC V, Hz V M700 B Accessories Description Accessory for FP200-M: Transparent front cover 144x72 (for IP65) 1) Art. o. B ) When using the "transparent front cover 144x72 (IP 65)" the cutout in the switchboard cabinet must be extended in height from 66 mm to 68 mm (+0.7/-0 mm). The degree of protection IP65 appies ony to the user interface FP200-M when using the front cover. The degree of protection for the compete device is sti IP30. Suitabe system components Description Votage U sys Type Art. o. CD-series couping device V CD1000 B V CD B V CD5000 B V CD14400 On request V CD25000 On request Description Votage/Current Type Art. o. Measuring current transformer AC up to 10 A W20 B W35 B W60 B AC up to 25 A W0-S20 B W1-S35 B W2-S70 B W35AB B AC/DC up to 10 A W60AB B W120AB B Suppy votage Art. o. Description AC DC Type Screw-type termina Push-wire termina Votage suppy for measuring current transformers V, 50/60 Hz V A420 B B M700_D00292_02_D_XXE/

11 Dimension diagram M700 f Mounting position top a d e g h b c mm in a b c d e f g h i j i j Dimension diagram FP200-M e f a b mm in a b c d e f d c M700_D00292_02_D_XXE/

12 Bender GmbH & Co. KG Postfach Grünberg Germany Londorfer Straße Grünberg Germany Te.: Fax: E-Mai: BEDER Group M700_D00292_02_D_XXE / / pdf / Bender GmbH & Co. KG, Germany Subject to change! The specified standards tae into account the edition vaid unti uness otherwise indicated.