Eaton MDN-408 Instructions For Installation, Operation And Maintenance

Instruction BookPage 28 Effective: May 2006I.B. 2C12060H08For more information visit: www.EatonElectrical.comFigure 3-29 Connection Diagram for Narrow 100kA Rating Frame with Digitrip 520MCFIXED INST.TRIP ALWAYS ACTIVE AT 18 PER UNIT SYM. RMSNOTES:1. 4 WIRE CRIMP CONNECTION2. (NA)3. SOCKET USED WITH DIGITRIP 520M GROUND ALARM POWER SUPPLY MODULE WILL “HANG UNCONNECTED” IFDIGITRIP 220 OR 520 IS SUPPLIED.4. ALL CONTACTS SHOWN WITH BREAKER IN OPEN POSITION AND WITH SPRING NOT CHARGED AND WITH TRIP UNIT IN“NON-TRIPPED” STATE (OTS SWITCHES).5. THE SPRING RELEASE ACCESSORY CONSISTS OF A “SR” COIL AND A P.C. BOARD. THE PRINTED CIRCUIT BOARD PRO-VIDES A .20 SECOND PULSE FOR THE CLOSING OPERATION. VOLTAGE MUST BE REMOVED AND THEN REAPPLIED FORSUBSEQUENT OPERATION. AN OPTIONAL LATCH CHECK SWITCH (LCS) ACCESSORY MAY BE CONNECTED TO THE SPRINGRELEASE. THE (CLOSED) LCS DELAYS THE SPRING RELEASE PULSE UNTIL THE BREAKER MECHANISM IS READY TOCLOSE (CHARGED AND RESET). (THIS WILL INSURE THAT THE LATCH WILL ALWAYS BE IN THE PROPER STATE BEFORETHE SPRING RELEASE PULSE IS INITIATED). IF VOLTAGE IS MAINTAINED TO THE SPRING RELEASE, THE CLOSING PULSEWILL OCCUR WHEN THE MECHANISM IS CHARGED AND RESET (LCS OPEN). VOLTAGE MUST BE REMOVED AND REAP-PLIED TO THE SPRING RELEASE FOR SUBSEQUENT OPERATION.6. TO PROVIDE SELECTED TIME DELAYS FOR SHORT TIME AND/OR GROUND TIME FUNCTIONS FOR TESTING OR NON-ZONE INTERLOCKING APPLICATIONS, A JUMPER FROM B-8 TO B-9 IS REQUIRED.7. ON THREE POLE BREAKERS ONLY, HAVING GROUND FAULT FUNCTIONALITY, A JUMPER INSTALLED FROM B-6 TO B-7WILL ENABLE SOURCE GROUND FAULT SENSING AND DISABLE RESIDUAL GROUND FAULT SENSING. INPUTS B-4 AND B-5WILL BE REASSIGNED FOR SOURCE GROUND SENSOR INPUTS.8. (NA)9. MOTOR OPERATOR SWITCH SHOWN WITH BREAKER CLOSING SPRING DISCHARGED.10. ON 4-POLE BREAKERS, THE NEUTRAL CURRENT SENSOR IS THE SAME STYLE AND WIRED THE SAME AS THE PHASESENSORS AND IS LOCATED WITHIN THE BREAKER FRAME. THE SECONDARY CONTACTS B-4, B-5, ARE NOT WIRED OUT.11. SECOND SHUNT TRIP MAY BE INSTALLED (USING A-7, A-8 CONTACTS) IN PLACE OF UVR. THIRD AUX SWITCH NOTAVAILABLE WITH SECOND SHUNT TRIP.12. ONLY ONE LATCH CHECK SWITCH MAY BE INSTALLED. USE OF CUSTOMER ACCESSIBLE LATCH CHECK SWITCH (B-28,B-29, B-30) IN SERIES WITH SPRING RELEASE DEFEATS ANTI-PUMP FUNCTION AND IS NOT RECOMMENDED. SEE NOTE 5FOR SPRING RELEASE LATCH CHECK SWITCH.13. THESE CONTACTS ARE PROVIDED FOR DIGITRIP 520MC AS STANDARD OR 520M AS OPTIONAL ACCESSORY. THE CON-TACTS ARE ASSIGNED FOR GROUND ALARM ON GROUND TRIP FUNCTION FOR LSIG TRIP STYLE. HOWEVER, FOR A LSISTYLE TRIP UNIT, THE CONTACTS ARE ASSIGNED AS A HIGH LOAD ALARM.14. THE OTS (OVERCURRENT TRIP SWITCHES) WILL OPERATE DIRECTLY FROM THE DIGITRIP DRIVING THE TA (TRIP ACTU-ATOR) TO TRIP THE CIRCUIT BREAKER. THE OTS REQUIRES A MANUAL LOCAL RESET VIA RED BUTTON DEPRESSION.www . ElectricalPartManuals . com