ABB RET670 - Page 14

Frequency protection............................................................................542
Underfrequency protection SAPTUF (81)........................................542
Application..................................................................................542
Setting guidelines.......................................................................543
Setting parameters.....................................................................544
Overfrequency protection SAPTOF (81).........................................545
Application..................................................................................545
Setting guidelines.......................................................................545
Setting parameters.....................................................................546
Rate-of-change frequency protection SAPFRC (81).......................547
Application..................................................................................547
Setting guidelines.......................................................................547
Setting parameters.....................................................................548
Multipurpose protection........................................................................549
General current and voltage protection CVGAPC...........................549
Application..................................................................................549
Setting guidelines.......................................................................555
Setting parameters.....................................................................565
Secondary system supervision.............................................................572
Current circuit supervision CCSRDIF (87).......................................572
Application..................................................................................572
Setting guidelines.......................................................................573
Setting parameters.....................................................................573
Fuse failure supervision SDDRFUF................................................574
Application..................................................................................574
Setting guidelines.......................................................................575
Setting parameters.....................................................................578
Control..................................................................................................579
Synchronism check, energizing check, and synchronizing
SESRSYN (25)................................................................................579
Application..................................................................................580
Application examples..................................................................585
Setting guidelines.......................................................................594
Setting parameters.....................................................................599
Apparatus control APC....................................................................602
Application..................................................................................603
Interaction between modules......................................................609
Setting guidelines.......................................................................611
Setting parameters.....................................................................613
Interlocking (3).................................................................................615
Table of contents
8
Application manual