6–88 345 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL
S4 CONTROLS CHAPTER 6: SETPOINTS
Close Breaker Defines a command to close the breaker
Maint. Req.
52a Contact OP
52b Contact OP
BKR2 52a Cont OP
52b Contact OP
Reset OK Reset command has been executed
BKR Stat Open Breaker status open detected
BKR2 Stat Open Breaker 2 status open detected
BKR2 Stat Open DPO
BKR Stat Clsd Breaker status closed detected
BKR2 Stat Clsd Breaker 2 status closed detected
BKR2 Stat Clsd DPO
Setpoint Group1 On Setpoint Group 1 is active
Setpoint Group2 On Setpoint Group 2 is active
Group Change Blk Changing of Setpoint Groups is blocked
Trip BKR1 Blk
Trip BKR 1 OP
Trip BKR 2 OP
Trip BKR2 Blk
Trip BKR 1 DPO
Trip BKR 2 DPO
Synchrocheck Sync Operation Syncheck element operated
Sync Close OP Syncheck close breaker command has been generated to the breaker
Sync Condition Defines the presence of syncheck conditions.
Testing Testing ON Testing feature is Enabled
Testing OFF Testing feature is Disabled
Element Operands
2nd Harmonic Differential 2nd Hmnc Diff OP 2nd Hmnc Diff Ph B
2nd Hmnc Diff Ph A 2nd Hmnc Diff Ph C
5th Harmonic Differential 5th Hmnc Diff OP 5th Hmnc Diff Ph B
5th Hmnc Diff Ph A 5th Hmnc Diff Ph C
Ambient Temperature HI Amb Temp PKP LO Amb Temp PKP HI Amb Temp DPO
HI Amb Temp OP LO Amb Temp OP LO Amb Temp DPO
Breaker Failure BKR1 Fail Alrm PKP BKR2 Stat Fail OP BKR Stat Fail OP
BKR1 Fail Alrm OP BKR2 Fail Alrm PKP BKR2 Fail Alrm DPO
BKR1 Fail Alrm DPO BKR2 Fail Alrm OP
Demand Curr Dmd1 Alrm OP C Dmd2 PhA Alrm OP Curr Dmd1 Block
Curr Dmd2 Alrm OP C Dmd2 PhB Alrm OP Curr Dmd2 Block
C Dmd2 PhC Alrm OP
Ground Instantaneous
Overcurrent
Gnd IOC1 Trip PKP Gnd IOC2 Trip PKP Gnd IOC1 Alarm DPO
Gnd IOC1 Trip OP Gnd IOC2 Trip OP Gnd IOC1 Block
Gnd IOC1 Trip DPO Gnd IOC2 Trip DPO Gnd IOC2 Alarm DPO
Gnd IOC1 Alarm PKP Gnd IOC2 Alarm PKP Gnd IOC2 Block
Gnd IOC1 Alarm OP Gnd IOC2 Alarm OP
Element Operands Event Description
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