ABB relion REF615 Applications Manual

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Contents

ANDB1B2OANDB1B2OORB1B2OFALSEFALSECBXCBR1_AU_CLOSECONTROL_LOCALCONTROL_REMOTEGUID-D25A5AD0-E5BF-476A-B844-9701D5EC44E7 V1 ENFigure 118: External closing command for circuit breakerANDB1B2OANDB1B2OORB1B2OFALSEFALSECBXBCR1_AU_OPENCONTROL_LOCALCONTROL_REMOTEGUID-DEFD10CB-6772-4DE5-952C-887F4E0CCFF2 V1 ENFigure 119: External opening command for circuit breaker3.5.3.5 Functional diagrams for measurement functionsThe phase current inputs to the IED are measured by the three-phase currentmeasurement function CMMXU1. The current input is connected to the X120 card inthe back panel. Similarly, the sequence current measurement CSMSQI1 measures thesequence current and the residual current measurement RESCMMXU1 measures theresidual current.The measurements can be seen from the LHMI and they are available under themeasurement option in the menu selection. Based on the settings, function blocks cangenerate low alarm or warning and high alarm or warning signals for the measuredcurrent values.CMMXU1BLOCK HIGH_ALARMHIGH_WARNLOW_WARNLOW_ALARMGUID-91927236-4B19-4AF3-B708-E09EC75FC246 V1 ENFigure 120: Current measurement: Three phase current measurementRESCMMXU1BLOCK HIGH_ALARMHIGH_WARNGUID-5A0C20F8-9B68-4104-9A45-0AE14A961904 V1 ENFigure 121: Current measurement: Residual current measurementCSMSQI1GUID-1B8391C6-5AF9-4CC5-A784-6E73487045F3 V1 ENFigure 122: Current measurement: Sequence current measurement1MRS756378 S Section 3REF615 standard configurationsREF615 111Application Manual