ABB REG670 - Page 16

Service value report............................................................. 423
Setting example....................................................................423
Voltage differential protection VDCPTOV ......................................425
Identification.............................................................................. 425
Application.................................................................................425
Setting guidelines...................................................................... 427
100% Stator earth fault protection, 3rd harmonic based STEFPHIZ429
Identification.............................................................................. 429
Application.................................................................................429
Setting guidelines...................................................................... 433
Section 11 Frequency protection....................................................437
Underfrequency protection SAPTUF ............................................. 437
Identification.............................................................................. 437
Application.................................................................................437
Setting guidelines...................................................................... 437
Overfrequency protection SAPTOF ...............................................438
Identification.............................................................................. 438
Application.................................................................................439
Setting guidelines...................................................................... 439
Rate-of-change of frequency protection SAPFRC .........................440
Identification.............................................................................. 440
Application.................................................................................440
Setting guidelines...................................................................... 440
Frequency time accumulation protection function FTAQFVR........ 441
Identification.............................................................................. 441
Application.................................................................................441
Setting guidelines...................................................................... 443
Section 12 Multipurpose protection................................................445
General current and voltage protection CVGAPC.......................... 445
Identification.............................................................................. 445
Application.................................................................................445
Current and voltage selection for CVGAPC function............446
Base quantities for CVGAPC function..................................448
Application possibilities........................................................ 449
Inadvertent generator energization...................................... 450
Setting guidelines...................................................................... 451
Directional negative sequence overcurrent protection......... 451
Negative sequence overcurrent protection...........................453
Generator stator overload protection in accordance with
IEC or ANSI standards......................................................... 455
Table of contents
10 Generator protection REG670 2.2 IEC and Injection equipment REX060, REX061, REX062
Application manual