Table 58:BZNSPDIF_A Output signalsName Type DescriptionTRIP BOOLEAN Zone A general tripTRIPLX BOOLEAN Differential trip output Zone ATREXTBAY BOOLEAN Zone A trip due to external trip from one ofconnected baysTREXTZ BOOLEAN Zone A trip due to external input signalTRSENS BOOLEAN Sensitive differential function trip Zone AOCT BOOLEAN General open CT alarm Zone ASOCT BOOLEAN Open CT alarm from slow algorithm Zone AFOCT BOOLEAN Open CT alarm from fast algorithm Zone AALDIFF BOOLEAN Differential current alarm Zone AALIIN BOOLEAN Incoming current alarm Zone AIIN_ZA REAL RMS incoming current, magnitude ofinstantaneous valueIINRANGE INTEGER RMS incoming current, rangeID_ZA REAL RMS differential current, magnitude ofinstantaneous valueIDRANGE INTEGER RMS differential current, rangeIDFRMS REAL Fundamental Frequency Differential current ZoneA5.1.4.6 Setting parametersAll general settings for Busbar differential protection are only relevant for properevent reporting via IEC 61850-8-1. They are not important for proper operation ofBusbar differential protection.Note that all settings for busbar protection under relevant parameter setting groupare directly related to proper operation of the Busbar differential protection.Table 59:BZNTPDIF_A Group settings (basic)Name Values (Range) Unit Step Default DescriptionOperation OffOn- - Off Differential protection operationDiffOperLev 1 - 99999 A 1 1000 Differential protection operation level inprimary amperesDiffTripOut SelfResetLatched- - SelfReset Differential protection trip output modetTripHold 0.000 - 60.000 s 0.001 0.200 Differential trip drop-off delay inSelfReset modeCheckZoneSup OffOn- - Off Check zone supervises differentialprotection operationSlowOCTOper OffBlockSupervise- - Block Operation of slow open CT alarmTable continues on next pageSection 5 1MRK 505 208-UEN BDifferential protection110Technical reference manual
