ABB RELION 670 SERIES REG670 - Page 17

Setting guidelines............................................................................ 462
100% Stator ground fault protection, 3rd harmonic based
STEFPHIZ (59THD)..............................................................................
464
Identification
.................................................................................... 464
Application....................................................................................... 464
Setting guidelines............................................................................ 468
Section 11 Frequency protection.........................................................471
Underfrequency protection SAPTUF (81).............................................471
Identification.................................................................................... 471
Application....................................................................................... 471
Setting guidelines............................................................................ 472
Overfrequency protection SAPTOF (81)...............................................472
Identification.................................................................................... 473
Application....................................................................................... 473
Setting guidelines............................................................................ 473
Rate-of-change of frequency protection SAPFRC (81)........................ 474
Identification.................................................................................... 474
Application....................................................................................... 474
Setting guidelines............................................................................ 475
Frequency time accumulation protection function FTAQFVR (81A).....476
Identification.................................................................................... 476
Application....................................................................................... 476
Setting guidelines............................................................................ 478
Section 12 Multipurpose protection..................................................... 481
General current and voltage protection CVGAPC................................ 481
Identification.................................................................................... 481
Application....................................................................................... 481
Current and voltage selection for CVGAPC function..................482
Base quantities for CVGAPC function........................................ 485
Application possibilities...............................................................485
Inadvertent generator energization.............................................486
Setting guidelines............................................................................ 487
Directional negative sequence overcurrent protection............... 487
Negative sequence overcurrent protection.................................489
Generator stator overload protection in accordance with IEC
or ANSI standards...................................................................... 492
Open phase protection for transformer, lines or generators
and circuit breaker head flashover protection for generators..... 494
Table of contents
Generator protection REG670 2.2 ANSI and Injection equipment REX060, REX061, REX062 11
Application manual