16.4.2 FunctionalityThe breaker monitoring function SSCBR is used to monitor different parameters ofthe breaker condition. The breaker requires maintenance when the number ofoperations reaches a predefined value. For a proper functioning of the circuit breaker,it is essential to monitor the circuit breaker operation, spring charge indication orbreaker wear, travel time, number of operation cycles and estimate the accumulatedenergy during arcing periods.16.4.3 Function blockSSCBRI3P*BLOCKBLKALMTRINDPOSOPENPOSCLOSEPRESALMPRESLOSPRCHRSTSPRCHRDRSTCBWRRSTTRVTRSTIPOWRSTSPCHTOPENPOSCLOSEPOSINVDPOSTRCMDTRVTOPALTRVTCLALOPERALMOPERLOCBLIFEALMONALMIPOWALPHIPOWLOPHSPCHALMGPRESALMGPRESLOIEC13000231-2-en.vsdIEC13000231 V2 ENFigure 425: SSCBR function block16.4.4 SignalsTable 657:SSCBR Input signalsName Type Default DescriptionI3P GROUPSIGNAL- Group signal for current inputBLOCK BOOLEAN 0 Block all the alarm and lockout indicationBLKALM BOOLEAN 0 Block all the alarmsTRIND BOOLEAN 0 Trip command from trip circuitPOSOPEN BOOLEAN 0 Signal for open position of apparatus from I/OPOSCLOSE BOOLEAN 0 Signal for close position of apparatus from I/OPRESALM BOOLEAN 0 Pressure alarm indication from CBPRESLO BOOLEAN 0 Pressure lockout indication from CBSPRCHRST BOOLEAN 0 CB spring charging started indication signalSPRCHRD BOOLEAN 0 CB spring charged indication signalRSTCBWR BOOLEAN 0 Reset of CB remaining life and operation counterRSTTRVT BOOLEAN 0 Reset of CB closing and opening travel timesRSTIPOW BOOLEAN 0 Reset of accumulated I^CurrExponentRSTSPCHT BOOLEAN 0 Reset of CB spring charging time1MRK502052-UEN B Section 16Monitoring897Technical manual
