Eaton Cutler-Hammer RMS 510 Instructions Manual

Also see for Cutler-Hammer Digitrip RMS 510: Instructions Instructional Leaflet Instruction leaflet

I.L. 29-885BPage 10Available 'Test Amps" SettingsBreaker TripsAt 6T and GFT\ CD "6T"=Phase Current Test at6xln and TRIPS breaker;"1, 2,3,8 or 10" x lp =PhaseCurrent Test - NO breakerTRIP;"GFT"=Ground Current Testand TRIPS breaker;"GF"=Ground Current Test -NO breaker TRIP.See Section 5.4.3 for inser-vice test trip limitations.© Push,then releaseTrip Resetbutton to reset Trip Unit.Required following allautomatic trip and testoperations.® Push, then release Testbutton to test. Test operationbegins with release ofpushbutton.\\\ \ Test Amps[ST]® XGnd FaultTimePI Sec.\ \00 Test (D OTripResetl © OlI Available Settings UnitStatusi1, .2, .3, .4, .5Seconds withFlat ResponseilVs.Fig. 5 Integral Test Panel (Lower Right Comer of TripUnit)I Ft ShapeReturns to FlatResponse atApproximately0.625 ln.1», .3*, .5*Seconds withl2t ShapeCAUTIONIn Viewing Window ^ ^.jIndicates 'l2t ShapeTESTING A CIRCUIT BREAKER UNDER “TRIP CON-DITIONS” WHILE IT IS IN SERVICE AND CARRYINGLOAD CURRENT, WHETHER DONE BY INTERNALOR EXTERNAL MEANS, IS NOJ RECOMMENDED.ANY TRIPPING OPERATION WILL CAUSE DISRUP-TION OF SERVICE AND POSSIBLE PERSONALINJURY RESULTING FROM UNNECESSARYSWITCHING OF CONNECTED EQUIPMENT.TESTING OF A CIRCUIT BREAKER THAT RESULTSIN THE TRIPPING OF THE CIRCUIT BREAKERSHOULD BE DONE ONLY WITH THE CIRCUITBREAKER IN THE “TEST” OR “DISCONNECTED”CELL POSITIONS OR WHILE THE CIRCUITBREAKER IS ON A TEST BENCH.To preserve the primary protection function of the tripunit, all in-service testing under “Trip” or “No-Trip” condi-tions are only performed at load current values no greaterthan 50% of the Long Delay Current Setting, lr . Anyattempt to conduct in-service testing when the load cur-rent exceeds 50% of lr, will not be executed by the tripunit.Since the Digitrip RMS 510 Trip Unit is completely self-powered using energy derived from the current sensorsinstalled in the circuit breaker, all in-service tests con-ducted should be conducted with the auxiliary controlpower module, shown in Fig. 7, plugged into the trip unit.This action will avoid difficulties caused by load currentlevels that are too low to operate the trip unit.VFig. 4.7 Ground Fault Time Delay SettingsNote: See also Section 3.6 on Zone Interlocking.5.0 TEST PROCEDURES5.1 GeneralDANGERDO NOT ATTEMPT TO INSTALL, TEST OR PERFORMMAINTENANCE ON EQUIPMENT WHILE IT IS ENER-GIZED. DEATH OR SEVERE PERSONAL INJURYCAN RESULT FROM CONTACT WITH ENERGIZEDEQUIPMENT.DE-ENERGIZE THE CIRCUIT AND DISCONNECT THECIRCUIT BREAKER BEFORE PERFORMING MAINTE-NANCE OR TESTS.As illustrated in Figs. 1 and 5, an integral test panel isprovided to test the Digitrip RMS 510 Trip Unit.Several no-trip settings are provided to check the trip unitoperation without actually tripping the circuit breaker.Effective May 1997