ABB RELION 620 Series Technical Manual page 19

620 series
Technical Manual
Signals..................................................................................453
Settings................................................................................ 453
Monitored data..................................................................... 454
Technical data...................................................................... 454
Wattmetric-based earth-fault protection WPWDE..................... 455
Identification......................................................................... 455
Function block...................................................................... 455
Functionality......................................................................... 455
Operation principle............................................................... 456
Timer characteristics............................................................ 462
Measurement modes............................................................464
Application............................................................................464
Signals..................................................................................466
Settings................................................................................ 466
Monitored data..................................................................... 467
Technical data...................................................................... 468
Multifrequency admittance-based earth-fault protection
MFADPSDE...............................................................................468
Identification......................................................................... 468
Function block...................................................................... 469
Functionality......................................................................... 469
Operation principle............................................................... 469
Application............................................................................486
Signals..................................................................................488
Settings................................................................................ 488
Monitored data..................................................................... 489
Technical data...................................................................... 489
Differential protection......................................................................490
Stabilized and instantaneous differential protection for
machines MPDIF....................................................................... 490
Identification......................................................................... 490
Function block...................................................................... 490
Functionality......................................................................... 490
Operation principle............................................................... 490
Application............................................................................496
Signals..................................................................................505
Settings................................................................................ 505
Monitored data..................................................................... 506
Technical data...................................................................... 507
Stabilized and instantaneous differential protection for two-
winding transformers TR2PTDF................................................ 508
Identification......................................................................... 508
Function block...................................................................... 508
Functionality......................................................................... 508
Table of contents
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