ABB RELION Series Technical Manual page 19

REC615 and RER615
Technical Manual
Monitored data..................................................................... 425
Technical data...................................................................... 425
Technical revision history..................................................... 426
Negative-sequence overvoltage protection NSPTOV............... 426
Identification......................................................................... 426
Function block...................................................................... 426
Functionality......................................................................... 426
Operation principle............................................................... 427
Application............................................................................428
Signals..................................................................................428
Settings................................................................................ 429
Monitored data..................................................................... 429
Technical data...................................................................... 430
Technical revision history..................................................... 430
Positive-sequence undervoltage protection PSPTUV............... 430
Identification......................................................................... 430
Function block...................................................................... 431
Functionality......................................................................... 431
Operation principle............................................................... 431
Application............................................................................432
Signals..................................................................................433
Settings................................................................................ 433
Monitored data..................................................................... 434
Technical data...................................................................... 434
Technical revision history..................................................... 435
Frequency protection......................................................................435
Frequency protection FRPFRQ................................................. 435
Identification......................................................................... 435
Function block...................................................................... 435
Functionality......................................................................... 435
Operation principle............................................................... 436
Application............................................................................439
Signals..................................................................................440
Settings................................................................................ 441
Monitored data..................................................................... 441
Technical data...................................................................... 442
Technical revision history..................................................... 442
Load-shedding and restoration LSHDPFRQ............................. 442
Identification......................................................................... 442
Function block...................................................................... 442
Functionality......................................................................... 443
Operation principle............................................................... 443
Application............................................................................447
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