Eaton SBN-508 Instructions For Installation, Operation And Maintenance

Also see for Magnum SB Series: Technical product guide

Contents

37Instructional L eaet IB2C12063H03Effective March 2012Instructions for Installation, Operation andMaintenance of Magnum SB Insulated CaseLow Voltage Power Circuit BreakersEATON CORPORATION www.eaton.com1. 4 WIRE CRIMP CONNECTION2. 3 WIRE CRIMPIF HIGH INST. TRIP MODULE IS SUPPLIED.3. SOCKET USED WITH DIGITRIP 520M GROUND ALARM POWER SUPPLY MODULE WILL “HANG UNCONNECTED” IF DIGITRIP220 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 PROVIDESA .20 SECOND PULSE FOR THE CLOSING OPERATION. VOLTAGE MUST BE REMOVED AND THEN REAPPLIED FOR SUBSEQUENTOPERATION. AN OPTIONAL SR-LATCH CHECK SWITCH (LCS) ACCESSORY MAY BE CONNECTED TO THE SPRING RELEASE. THE(CLOSED) LCS DELAYS THE SPRING RELEASE PULSE UNTIL THE BREAKER MECHANISM IS READY TO CLOSE (CHARGED ANDRESET). (THIS WILL INSURE THAT THE LATCH WILL ALWAYS BE IN THE PROPER STATE BEFORE THE SPRING RELEASE PULSE ISINITIATED). IF VOLTAGE IS MAINTAINED TO THE SPRING RELEASE, THE CLOSING PULSE WILL OCCUR WHEN THE MECHANISMIS CHARGED AND RESET (LCS OPEN). VOLTAGE MUST BE REMOVED AND REAPPLIED TO THE SPRING RELEASE FOR SUBSE-QUENT OPERATION.6. TO PROVIDE SELECTED TIME DELAYS FOR SHORT TIME AND/OR GROUND TIME FUNCTIONS FOR TESTING OR NON-ZONEINTERLOCKING 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-7 WILLENABLE SOURCE GROUND FAULT SENSING AND DISABLE RESIDUAL GROUND FAULT SENSING. INPUTS B-4 AND B-5 WILL BEREASSIGNED FOR SOURCE GROUND SENSOR INPUTS.8. THIS LEAD SUPPLIED ON G62 STYLE HIGH INSTANTANEOUS TRIP MODULE ONLY.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 PHASE SENSORSAND 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 NOT AVAILABLEWITH SECOND SHUNT TRIP. SHUNT TRIP MAY BE STANDARD OR CONTINUOUS DUTY TYPE. SECONDARY WIRING IS IDENTICAL.12. ONLY ONE LATCH CHECK SWITCH MAY BE INSTALLED. USE OF CUSTOMER ACCESSIBLE LATCH CHECK SWITCH (B-29, B-30) INSERIES WITH SPRING RELEASE DEFEATS ANTI-PUMP FUNCTION AND IS NOT RECOMMENDED. SEE NOTE 5 FOR SPRING RELEASELATCH CHECK SWITCH.13. THESE CONTACTS ARE PROVIDED FOR DIGITRIP 520MC AS STANDARD. THE CONTACTS ARE ASSIGNED FOR GROUND ALARMON GROUND TRIP FUNCTIONS FOR LSIG TRIP STYLE. HOWEVER, FOR A LSI STYLE TRIP UNIT, THE CONTACTS ARE ASSIGNED AS AHIGH LOAD ALARM.14. THE OTS (OVERCURRENT TRIP SWITCHES) WILL OPERATE DIRECTLY FROM THE DIGITRIP DRIVING THE TA (TRIP ACTUATOR) TOTRIP THE CIRCUIT BREAKER. THE OTS REQUIRES A MANUAL LOCAL RESET VIA RED BUTTON DEPRESSION. THE AUTO RESET OTSDOES NOT REQUIRE MANUAL RESET, AND IF SO CONFIGURED, OCCUPIES THE MAKE-COM SECONDARY TERMINALS A-4 AND A-5.15. CONNECTING A-12 TO B-7 VIA A REMOTE MAINTENANCE MODE SWITCH (GOLD CONTACTS) WILL ALSO ACTIVATE RELAYCONTACT A-9.16. THE HIGH INSTANTANEOUS MODULE IS SUPPLIED ON MDSX/SPSE BREAKERS AND IS OPTIONAL ON OTHERS. THE MODULEPROVIDES 50KA HIGH INSTANTANEOUS TRIP.Figure 49. Connection Diagram for Double-wide Frame (except SBSE) with Digitrip 520MC with ABCABC Configuration