ABB RELION RET670 - Page 18

Identification.................................................................................... 556
Application
....................................................................................... 556
Setting guidelines
............................................................................ 558
Thermal overload protection, one time constant Fahrenheit/
Celsius LFPTTR/LCPTTR (26)............................................................. 567
Identification.................................................................................... 567
Thermal overload protection, two time constants TRPTTR (49)...........567
Identification.................................................................................... 567
Application....................................................................................... 567
Setting guideline.............................................................................. 568
Breaker failure protection CCRBRF(50BF)...........................................571
Identification.................................................................................... 571
Application....................................................................................... 571
Setting guidelines............................................................................ 572
Stub protection STBPTOC (50STB)..................................................... 575
Identification.................................................................................... 575
Application....................................................................................... 575
Setting guidelines............................................................................ 576
Pole discrepancy protection CCPDSC(52PD)...................................... 577
Identification.................................................................................... 577
Application....................................................................................... 577
Setting guidelines............................................................................ 578
Directional underpower protection GUPPDUP (37)..............................579
Identification.................................................................................... 579
Application....................................................................................... 579
Setting guidelines............................................................................ 581
Directional overpower protection GOPPDOP (32)................................585
Identification.................................................................................... 585
Application....................................................................................... 585
Setting guidelines............................................................................ 587
Broken conductor check BRCPTOC (46)............................................. 591
Identification.................................................................................... 591
Application....................................................................................... 592
Setting guidelines............................................................................ 592
Capacitor bank protection CBPGAPC.................................................. 592
Identification.................................................................................... 592
Application....................................................................................... 593
SCB protection........................................................................... 595
Setting guidelines............................................................................ 597
Restrike detection.......................................................................599
Table of contents
12 Transformer protection RET670 2.2 ANSI
Application manual