Grid feeding monitoring relay according to CEI 0-21 CM-UFD.M32

Transcription

1 Datasheet Grid eeding monitoring relay according to CEI 0-21 CM-UFD.M32 CM-UFD.M32 is a multiunctional grid eeding monitoring relay. It provides dierent monitoring unctions in accordance with CEI 0-21 ed. June It detects over- and undervoltage (10 minutes average value, voltage increase and decrease protection) as well as any changes in grid requency (double thresholds, requency increase and decrease protection). The device is connected between the decentralized electrical energy source and the public grid in order to disconnect it, in case o problems, aults or maintenance into the grid. Characteristics - Monitoring o single and three-phase mains or grid eeding - Type-tested in accordance with CEI Over- and undervoltage, 10 minutes average value as well as over- and underrequency monitoring - Two-tier threshold settings or over-/ undervoltage/ -requency - Integrated management o redundancy unction (mandatory in plants with P>20 kw) - Measured values, thresholds and settings shown on the display - All threshold values adjustable as absolute values - Deault setting according to CEI True RMS measuring principle - High measurement accuracy - 3 input contacts or remote trip, eedback signal, and external signal - Tripping delay or each threshold adjustable - Alarm memory or up to 10 entries (incl. cause o alarm, measured value, relative timestamp) - Autotest unction - Password setting protection - 3 c/o (SPDT) contacts mm, 6 modules case or DIN rail - LEDs or the indication o operational states. Marks Order data Type Rated control supply voltage Measuring range Order code CM-UFD.M32 24 V AC/DC or 230 V AC V AC 1SVR R4400

2 Grid eeding monitoring relay according to CEI 0-21 Programming mode and use Functions Operating controls A1 A2 A3 A4 Y20 Y21 L1 L2 L3 N Y30 Y31 220V AC 24V AC/DC Y10 Y11 Application The grid eeding monitoring relay (SPI), that monitors network voltage and requency, allows to disconnect distributed generation (GD) whenever the parameters are over the adjusted thresholds. Completely adjustable the CM-UFD.M32 assures the necessary lexibility to integrate medium and small production plants. In conormity to CEI 0-21 Ed. June 2012, the CM-UFD.M32 relay could be used in all the low voltage plants and in medium voltage plants with power less than 30 kw. The relay is mandatory in all low voltage production plants with power > 6 kw or with more than 3 generators (eg. Plants with more than 3 inverters). Operating principle CM-UFD U F1 F2 Display programming/exit Values increase LEDs status Values decrease Conirm selection Protective unctions I control supply voltage is applied and all phases are present with correct voltage and requency values, output relay 11-12/14 (DDI) energizes and the start-up delay begins. When the delay is complete, output relay 21-22/24 energizes or de-energizes, depending on the coniguration. The green LED U is on. I the measured values exceed or all below the set threshold values, output relay 11-12/14 de-energizes ater the adjusted delay and output relay 21-22/24 energizes or de-energizes, depending on the coniguration, when the adjusted delay is complete. The ault type is indicated by the red LEDs F1 or F2. The threshold value that has caused tripping is shown on the display. As soon as the measured value returns to the tolerance range, taking into account a ixed hysteresis (less than 100 ms as requested by standard CEI 0-21), output relay 11-12/14 re-energizes without delay; output relay 21-22/24 energizes or de-energizes, depending on the coniguration, when the adjusted delay is complete. When output relay 11-12/14 is re-energized the red LEDs F1 or F2 turn o and the ault message on the display disappears. The event that has caused tripping o the relay is recorded in the menu events. Protective unction V>59 S1 med. (10-minutes average value): The relay calculates the sliding root mean square o the voltage value (in case o 3 phase 3 voltage values) over a period o 10 minutes. The voltage values are updated every 3 seconds. I the 10-minutes average value exceeds the threshold value, the output relays trip when the adjusted delay is complete. Remote trip Measurements Trip DDI External signal Local command 2 CM-UFD.M32 - Grid eeding monitoring relay according to CEI 0-21 Data sheet

3 Event list The relay records and logs the last 10 events that caused tripping o the relay. Relevant inormation is available in the menu Events where the type o event such as protection or auto test are recorded as well as the time passed since the last tripping o the relay in hours, minutes and seconds. I the relay is switched-o and switched-on again, the measured time is reset. Redundancy unction The redundancy relay 31/32-34 (DG) is activated i relay 11/12-14 has de-energized and, within the adjustable time delay, no eedback rom the external contact has been recognized by the internal logic via Y10-Y11. The external contact is connected in series to the coil o the relay itsel, representing the status o the disconnection device. In case a eedback signal is present, the redundancy relay does not trip. Relay 2 (21/22-24) Output relay 2 can be used or the closing command o the breaker motor. In case output relay 11/12-14 energizes the adjustable delay T1 starts. When T1 is complete, output relay 21/22-24 will be activated or the duration o the pulse time T2 or until relay 11/12-14 de-energizes. In this last case T2 is inactive (T2= LOCK). The operating principle o the relay 21/22-24 is conigurable as normally energized (closed-circuit principle) or normally de-energized (open-circuit principle). Local command and external signal The CEI-021 standard deines Restrictive thresholds, the under- and overrequency thresholds S1 ( Hz), and Permissive thresholds, the under- and overrequency thresholds S2 ( Hz). Selection o S1 or S2 thresholds is made by the corresponding combination o the external signal and the local command, as shown in this table: External Signal Local Command Frequency Range 0 0 Permissive S2 1 0 Permissive S2 0 1 Permissive S2 1 1 Restrictive S1 Note: In order to activate restrictive thresholds S1 also input Y30-Y31 has to be closed. Data sheet CM-UFD.M32 - Grid eeding monitoring relay according to CEI

4 Grid eeding monitoring relay according to CEI 0-21 Programming mode and use Remote trip The control input Y20-Y21 can be conigured as normally open or normally closed. I normally closed is conigured, the grid eeding monitoring relay trips i Y20-Y21 is opened. I normally open is conigured, the relay trips i Y20-Y21 is closed. Within less than 50 ms ater activation o the remote trip input, output relay 11/12-14 de-energizes, and output relay 21/22-24 energizes or de-energizes, depending on the coniguration. When the remote trip input is deactivated the output relays 11/12-14 and 21/22-24 trip again. Autotest The auto test unction allows the veriication o the protective unctions operability. Selection o the unction to be tested starts the auto test. The display shows the threshold value that increases or decreases until the input voltage or requency value that causes tripping o the output relays is reached. I during the sweep any value o the unction setting range meets the same value o the input quantity supplied to the relay (Voltage or Frequency), the unction under test trips, operates the output relay and the display shows OK : the Autotest has veriied that the relay trips correctly. I during the sweep no value o the unction setting range meets the same value o the input quantity supplied to the relay (Voltage or Frequency), the unction under test does not trip and the display shows KO : the Autotest has veriied that the relay does not trip untimely. This is the case when the value o the input quantity supplied to the relay is the nominal one which, o course, is outside the unctions setting range. To have the unction tripping during the Autotest, the input quantity must be arranged to a value within the unction setting range. The result is stored in the event list. Electrical connection A1 A2 A3 A4 Y20 Y21 L1 L2 L3 N Y30 Y31 220V AC Connection A1-A2 A3-A4 L1,L2,L3,N 24V AC/DC Y10-Y11 Input 1 Y20-Y21 Digital Input 2 Y30-Y31 Digital Input 3 Y10 Y11 Note: only one auxiliary power supply is allowed Output relays scheme CM-UFD U F1 F2 control supply voltage 230 V AC control supply voltage 24 V AC/DC measuring inputs DDI eedback remote trip or DDI external signal 11-12/14 Output Relay 1 trip relay (normally energized) 21-22/24 Output Relay 2 (2 nd DDI or closing command or breaker motor) conigurable (normally energized or de-energized) 31-32/34 Output Relay 3 redundancy relay or DG. Conigurable (normally energized or de-energized) CM-UFD.M32 - Grid eeding monitoring relay according to CEI 0-21 Data sheet

5 Coniguration The relay is delivered with deault settings in accordance to CEI 0-21 table 8. Thanks to the wide display and to appropriate buttons it s possible to set all the relay parameters in a very simple way. The menu structure starts with the main page that shows the real time measured values. Passing through diagnostic and test pages, it s possible to view the protection unctions parameters pages. The main page that shows the real time measured values: - press button SET to enter in the menu - press arrow buttons to move between unctions and parameters - press button ENTER to enter in the chosen page - using arrow buttons it s possible to modiy the values o the parameters - press ENTER button to conirm the value and proceed into the menu - press SET button to return to, till the main page Visualization o the parameter is always possible, modiication only ater having entered the password. V 230 V Password Min V 27 S1 V V 230 V 231 V I/O managem. 195 V F Hz Events rec. Time 400 ms Warning: any CM-UFD.M32 relay is delivered with the same deault password. The installer is responsible or the veriication o the parameter values and the change o the password with a personal one in order to avoid unwanted modiications. Deault settings table Protective unctions Threshold Tripping delay 1 st Overvoltage med. (59 S1) 253 V 3 sec 2 nd Overvoltage (59 S2) 265 V 0.2 sec 1 st Undervoltage (27 S1) 196 V 0.4 sec 2 nd Undervoltage (27 S2) 92 V 0.2 sec 1 st Overrequency (81> S1) 50.5 Hz 0.1 sec 1 st Underrequency (81< S1) 49.5 Hz 0.1 sec 2 nd Overrequency (81> S2) 51.5 Hz 0.1 sec 2 nd Underrequency (81< S2) 47.5 Hz 0.1 sec Note: the voltage settings are always reerred to phase-neutral (Vn 230 V). In order to bring back values to phase-phase (Vn 400 V) or viceversa use the 1,732 constant. Indication o operational states LEDs, status inormation LEDs status U green LED ON: ALL 3 LEDs lashing: F1 LED lashing: F1 LED ON: F2 LED lashing: F2 LED ON: Cause normal working condition device malunctioning prewarning under-/overvoltage inal switch-o under-/overvoltage prewarning under-/overrequency inal switch-o under-/overrequency Data sheet CM-UFD.M32 - Grid eeding monitoring relay according to CEI

6 Grid eeding monitoring relay according to CEI 0-21 Menu structure Main menu Measurements Password Autotest Events rec. I/O Managem. Connection Options Language 6 CM-UFD.M32 - Grid eeding monitoring relay according to CEI 0-21 Data sheet

7 Password management Password Autotest Events Recording Password 0 the correct password (0-9999) by means o the buttons Up/Down. Press button SET to conirm. Now, programming can start (the authorization is displayed by the asterisk shown at the ar right bottom o the display). Press button ENTER to go to the menu PASSWORD or changing the password Measurements Password Modiication 0 the new password (0-9999) by means o the buttons Up/Down Conirm Password 0 Measurements Misure Data sheet CM-UFD.M32 - Grid eeding monitoring relay according to CEI

8 Grid eeding monitoring relay according to CEI 0-21 Menu structure Protective unctions parameters setting Password Autotest Events Recording Min V 27 S1 196 Time 400 First enter the password, conirmation displayed by the asterisk shown at the ar right bottom o the display. With the buttons Up/Down the threshold value and the tripping delay can be adjusted within the ollowing ranges: Threshold: (46-230)V step 1 V Delay: ( )ms step 10 ms Measurements Misure Min V 27 S2 Measurements Misure Time Threshold: (12-230)V step 1 V Delay: ( )ms step 10 ms Vmed. 59 S1 Measurements Misure Time Threshold: ( )V step 1 V Delay: ( )ms step 50 ms Max V 59 S2 Measurements Misure Time Threshold: ( )V step 1 V Delay ( )ms step 10 ms 8 CM-UFD.M32 - Grid eeding monitoring relay according to CEI 0-21 Data sheet

9 Min F 81 S1 Measurements Misure Time 49,5 100 Threshold: (47-50)Hz step 0,1 Hz Delay: ( )ms step 10 ms Min F 81 S2 Measurements Misure Time 47,5 100 Threshold: (47-50)Hz step 0,1 Hz Delay: ( )ms step 10 ms Max F 81 S1 Measurements Misure Time 50,5 100 Threshold: (50-52)Hz step 0,1 Hz Delay: ( )ms step 10 ms Max F 81 S2 Measurements Misure Time 51,5 100 Threshold: (50-52)Hz step 0,1 Hz Delay: ( )ms step 10 ms Data sheet CM-UFD.M32 - Grid eeding monitoring relay according to CEI

10 Grid eeding monitoring relay according to CEI 0-21 Menu structure Autotest menu Autotest routine Measurements V 27.S1 V 59.S1 V 27.S2 V: scrolling V 59.S1 T: V 59.S2 F: V 59.S1 OK V 59.S1 KO Password Autotest V: V: T: T: F: F: Events rec. V 27.S1 V 27.S2 V 59.S1 V 59.S2 F < 81.S1 F < 81.S2 F > 81.S1 F > 81.S2 10 CM-UFD.M32 - Grid eeding monitoring relay according to CEI 0-21 Data sheet

11 Events menu Measurements Input / Output menu Measurements Password Autotest Events rec. I/O Managem. Connection Option Language Event: 0 type FF.Sx Vx T :00 - In the menu Events is recorded the ollowing inormation (up to 10 entries): - All protective unctions (27.S1 27.S2 59.S1 59.S2 -- <81.S1 <81.S2 >81.S1 >81.S2) - Last relay start-up - Auto-test Local Command Relay 2 Back-up Ext. Signal Event: 1 type FF.Sx Vx T :00 Rl 2 Logic Remote Trip Event: 10 type FF.Sx Vx T :00 Data sheet CM-UFD.M32 - Grid eeding monitoring relay according to CEI

12 Grid eeding monitoring relay according to CEI 0-21 Menu structure Local command Local Command Relay 2 Back-up Ext. Signal First enter the password, conirmation displayed by the asterisk shown at the ar right bottom o the display. With the buttons Up/Down the parameter value can be modiied. : (0-1) Local Command 0 Output relay 2, time delays Comando Loc. Local Command Relay 2 Back-up Ext. Signal First enter the password, conirmation displayed by the asterisk shown at the ar right bottom o the display. With the buttons Up/Down the parameter value can be modiied. T1: ( ) ms T2: ( ) ms / LOCK Relay 2 T T Back up relay, logic and time delay Comando Loc. Local Command Relay 2 Back-up Ext. Signal First enter the password, conirmation displayed by the asterisk shown at the ar right bottom o the display. With the buttons Up/Down the parameter value can be modiied. Tbu: ( ) ms Back-up Tbu 500 External signal logic Local Command Relay 2 Back-up Ext. Signal First enter the password, conirmation displayed by the asterisk shown at the ar right bottom o the display. With the buttons Up/Down the parameter value can be modiied. : (0-1) Ext. Signal 0 Output relay 2 logic Comando Loc. Rl 2 Logic Remote Trip First enter the password, conirmation displayed by the asterisk shown at the ar right bottom o the display. With the buttons Up/Down the parameter value can be modiied. Rl 2 Logic: (Pos-Neg) Rl 2 Logic Logic Pos 12 CM-UFD.M32 - Grid eeding monitoring relay according to CEI 0-21 Data sheet

13 Remote trip logic Comando Loc. Rl 2 Logic Remote Trip First enter the password, conirmation displayed by the asterisk shown at the ar right bottom o the display. With the buttons Up/Down the parameter value can be modiied. Logic: (Pos-Neg) Remote Trip Logic Pos Measurements connection Measurements I/O Managem. Connection Options Language First enter the password, conirmation displayed by the asterisk shown at the ar right bottom o the display. With the buttons Up/Down the parameter value can be modiied. Type: (3 Ph 1 Ph) Connection Type 3 ph Language setting Measurements I/O Managem. Connection Options Language First enter the password, conirmation displayed by the asterisk shown at the ar right bottom o the display. With the buttons Up/Down the parameter value can be modiied. Lang: (Engl. Ita.) Language lang. Engl Data sheet CM-UFD.M32 - Grid eeding monitoring relay according to CEI

14 Grid eeding monitoring relay according to CEI 0-21 Connection diagrams Application examples 1 + L N 21 L N L1 L2 L3 N Y10Y Y10Y CM-UFD CM-UFD U U F1 F1 F2 F2 A1 A2 A3 A4 Y20Y21 L1 L2 L3 N Y30 Y31 A1 A2 A3 A4 Y20Y21 L1 L2 L3 N Y30 Y G G 26 Legend 1) Control supply voltage or CM-UFD.M32 (SPI) relay and trip device coil (DDI) 2) Protection use or CM-UFD.M32 relay 3) Main circuit breaker DG or DGL 4) DDI short circuit protection 5) DDI: automatic circuit breaker or contactor equipped with low voltage coil and motor or automatic closure 6) Generator and/or inverter 7) Generator/inverter circuit breaker (DDG) 8) DDI auxiliary contact or eedback unction (P>20kW) 9) Shunt Trip coil or eedback unction (P>20kW). This coil can control DG/DGL or DDG devices Note: in accordance to CEI 0-21 regulation, in case o loss o control supply voltage it s asked to guarantee, at least or 5 seconds, the unctionality o the CM-UFD. M32, the operability o the DDI and when present the command coil or operating the redundancy device. This unction has to be realized by external buer or UPS devices. 14 CM-UFD.M32 - Grid eeding monitoring relay according to CEI 0-21 Data sheet

15 Grid eeding monitoring relay according to CEI 0-21 Technical data Technical data Data at T a = 25 C and rated values, unless otherwise indicated Input circuit - Supply circuit Rated control supply voltage U S A1-A2 230 V AC A3-A4 24 V AC/DC Tolerance o the rated control supply voltage U S % Rated requency DC and 50 Hz Frequency range AC Hz Typical current / power consumption 24 V DC 125 ma / 2,7 W 230 V AC 15 ma / 3 VA Power ailure buering time 5 s with external device (e.g CP-B) Input circuit - Measuring circuit L1, L2, L3, (N) Monitoring unctions according to CEI 0-21 ed. June 2012 Measuring ranges over-/undervoltage V AC (L1, L2, L3, N) V AC (L1, L2, L3) V AC (L1, N) over-/underrequency Hz Threshold values over-/undervoltage, 10 minutes average value overvoltage V AC,adjustable in 1 V steps (L1, L2, L3, N) V AC adjustable in 1V steps (L1, L2, L3) V AC adjustable in 1 V (L1, N) over-/underrequency Hz, adjustable in 0.01 Hz steps Hysteresis related to the threshold value undervoltage 2% overvoltage, 10 minutes average value 2% underrequency 2% overrequency 2% Accuracy o measurements voltage measurement ± 1 V ± 1 digit requency measurement ± 0,01 Hz ± 1 digit Display accuracy ± 1 digit (1 V or 0,01 Hz) Rated requency o measuring signal 50 Hz Frequency range o the measuring signal Hz Measuring principle TRMS Max. reaction time (Measuring cycle CM-UFD.M32 + < 30 ms switching time o the relays) without intentional delay Accuracy within the rated control supply voltage tolerance U 2 % Accuracy within the temperature range U 0,02 % / C Data sheet CM-UFD.M32 - Grid eeding monitoring relay according to CEI

16 Grid eeding monitoring relay according to CEI 0-21 Technical data Input circuit - Feedback circuits Y10-Y11, Y20-Y21, Y30-Y31 Number 3 Kind o inputs eedback rom DDI auxiliary contact (Y10-Y11) isolated input or remote disconnection (Y20-Y21) isolated input or external signal (Y30-Y31) Electrical isolation rom supply voltage yes rom the measuring circuit yes rom the relay outputs yes Type o triggering ree voltage Max. switching current in the control circuit 60 ma Max. cable length at the control input 200 m No-load voltage at the control inputs 5 V DC Feedback time section switch 10 ms Timing circuits Start-up delay (prior to irst grid connection) 10 ms Start-up delay (display) 5 s Tripping delay adjustable see CEI 0-21 ed. June 2012 Adjustment range o the delay over-/undervoltage, over-/underrequency 0,05-5 s with 0,05 s steps Tolerance o the delay 5 ms Accuracy within the rated control supply voltage tolerance t 1 % ± 20 ms Indication o operational states See table LEDs, status inormation Display Backlighted yes Back light on pressing any key button o automatic, ater 5 minutes inactivity LCD clearly visible C LCD visible C Display area 27x 30 mm 16 CM-UFD.M32 - Grid eeding monitoring relay according to CEI 0-21 Data sheet

17 Output circuits - Relay outputs Kind o outputs 11-12/14 relay, 1 c/o (SPDT) contact 21-22/24 relay, 1 c/o (SPDT) contact 31-32/34 relay, 1 c/o (SPDT) contact Operating principle 11-12/14 closed-circuit principle 21-22/24 open- or closed- circuit principle conigurable 31-32/34 open circuit principle Contact material AgNi Rated operational voltage Ue (IEC/EN ) 250 V AC Minimum switching voltage / minimum switching current 12 V / 10 ma Maximum switching voltage / maximum switching current 250V AC / 5A Rated operational current Ie (IEC/EN ) AC12 (resisitive) at 230 V 6 A AC15 (inductive) at 230 V 3 A DC12 (resistive) at 24 V 5 A DC13 (inductive) at 24 V 2 A Mechanical lietime 100 x 10 3 switching cycles Electrical lietime at standard condition 5 x 10 5 switching cycles Maximum use rating to achieve short-circuit protection n/c contact 15 A, operating class gg/gl n/o contact 15 A, operating class gg/gl Maximum closing current (short time) t<20ms 30 A t<80ms 17 A Conventional thermal current I th (IEC/EN ) 5 A User interace Buttons 4 key buttons or programming and scroll the menu General data MTBF on request Duty time 100% Dimensions (W x H x D) product dimensions 106,3 x 90,5 x 62 mm packaging dimensions 119 x 94 x 67 mm Weight net weight 0,395 kg gross weight 0,440 kg Mounting DIN rail (IEC/EN 60715) TH and TH 35-15, snapon mounting without any tool Mounting position any Minimum distance to other units vertical not necessary horizontal not necessary Material o housing policarbonate PBC Degree o protection housing / terminals IP40 / IP20 Electrical connection Wire size ine-strand with(out) wire end errule 1 x 0,5-1,5 mm 2 (1 x AWG) rigid 1 x 0,5-1,5 mm 2 (1 x AWG) Stripping length 7 mm (0,28 in) Tightening torque 0,35 Nm (3.1 lb.in) Data sheet CM-UFD.M32 - Grid eeding monitoring relay according to CEI

18 Grid eeding monitoring relay according to CEI 0-21 Technical data Environmental data Ambient temperature ranges operation C storage C transport C Climatic category (EN 50178) 3K3 Vibration, sinusoidal (IEC/EN ) Class 1 Shock (IEC/EN ) Class 1 Isolation data Rated insulation voltage U i supply/measuring 424 V (EN 50178) mesuring/output 424 V supply/output 424 V output circuit 1/output circuit 2/output circuit V Rated impulse withstand voltage U imp supply/measuring/output circuits 5 kv (CEI 0-21, CEI 0-16 ) output circuit 1/output circuit 2/output circuit 3 4 kv (EN 50178) Basic insulation supply/measuring/output circuits 424 V output circuit 1/output circuit 2/output circuit V Test voltage, routine test supply/measuring/output circuits 2 kv output circuit 1/output circuit 2/output circuit 3 2 kv Test voltage, type test supply/measuring/output circuits 2 kv (CEI 0-21) output circuit 1/output circuit 2/output circuit 3 2 kv Protective separation (EN 50178) supply/measuring/output circuits 424 V output circuit 1/output circuit 2/output circuit V Pollution degree (EN 50178) 3 Overvoltage category (CEI 0-21) IV Standards / Directives Product standard IEC/EN Application standards CEI 0-21 ed Low Voltage Directive 2006/95/EU EMC Directive 2004/108/EU RoHS Directive 2002/95/EU Electromagnetic compatibility Intererence immunity to IEC/EN , CEI 0-21 Tab.11 Electrostatic discharge IEC/EN level 3, 6 kv / 8 kv Radiated, radio-requency, electromagnetic ield IEC/EN level 3, 10 V/m ( Mhz) level 2, 3 V/m ( Mhz) level 1, 1 V/m ( Mhz) Electrical ast transient / burst IEC/EN level 3 2 kv Surge IEC/EN level 3, 1 kv L-L, 2kV L-earth Conducted disturbances, induced by radio-requency ields IEC/EN level 3, 10 V Voltage dips IEC/EN % Us continuous, 80% Us max. 1 sec Short interruptions IEC/EN ms Voltage variations IEC/EN % Us continuous, 130% Us max. 1 sec. Intererence emission IEC/EN , IEC/EN High-requency radiated IEC/CISPR 22, EN class B High-requency conducted IEC/CISPR 22, EN class B 18 CM-UFD.M32 - Grid eeding monitoring relay according to CEI 0-21 Data sheet

19 Grid eeding monitoring relay according to CEI 0-21 Technical diagrams and dimensions Load limit curves Max. DC load breaking capacity Contact lietime DC voltage [V] Switching cycles resistive load 250VAC resistive load AgNi90/10 20 S0177-D 10 0,1 0,2 0, DC current [A] S0024-B Switching current [A] Dimensions in mm Further documentation Document title Document type Document number Electronic products and relays technical catalogue 2CDC C020x CM-UFD.M32 Grid eeding monitoring relay instruction sheet 1SVC M0000 Note: you can ind the documentation on the internet at -> Control Products -> Electronic Relays and Controls -> Three Phase Monitors. Data sheet CM-UFD.M32 - Grid eeding monitoring relay according to CEI

20 Contacts ABB STOTZ-KONTAKT GmbH P. O. Box Heidelberg, Germany Phone: +49 (0) Fax: +49 (0) ino.desto@de.abb.com You can ind the address o your local sales organisation on the ABB home page -> Low Voltage Products and Systems We reserve the right to make technical changes or modiy the contents o this document without prior notice. With regard to purchase orders, the agreed particulars shall prevail. ABB AG does not accept any responsibility whatsoever or potential errors or possible lack o inormation in this document. We reserve all rights in this document and in the subject matter and illustrations contained therein. Any reproduction, disclosure to third parties or utilization o its contents - in whole or in parts - is orbidden without prior written consent o ABB AG. Copyright 2013 ABB. All rights reserved. 2CDC D /2013