ABB REG670 - Page 13

Setting guidelines...................................................................... 320
Meshed network without parallel line................................... 320
Meshed network with parallel line........................................ 322
Directional phase overcurrent protection, four steps OC4PTOC....324
Identification.............................................................................. 324
Application.................................................................................324
Setting guidelines...................................................................... 325
Settings for each step...........................................................327
Setting example....................................................................330
Instantaneous residual overcurrent protection EFPIOC ................ 335
Identification.............................................................................. 335
Application.................................................................................335
Setting guidelines...................................................................... 335
Directional residual overcurrent protection, four steps EF4PTOC .338
Identification.............................................................................. 338
Application.................................................................................338
Setting guidelines...................................................................... 340
Common settings for all steps.............................................. 341
2nd harmonic restrain...........................................................342
Parallel transformer inrush current logic...............................343
Switch onto fault logic...........................................................344
Settings for each step (x = 1, 2, 3 and 4)............................. 344
Transformer application example......................................... 347
Four step directional negative phase sequence overcurrent
protection NS4PTOC .....................................................................350
Identification.............................................................................. 350
Application.................................................................................350
Setting guidelines...................................................................... 352
Settings for each step ..........................................................353
Common settings for all steps.............................................. 355
Sensitive directional residual overcurrent and power protection
SDEPSDE ..................................................................................... 356
Identification.............................................................................. 357
Application.................................................................................357
Setting guidelines...................................................................... 358
Thermal overload protection, two time constants TRPTTR ...........366
Identification.............................................................................. 367
Application.................................................................................367
Setting guideline........................................................................368
Breaker failure protection CCRBRF............................................... 370
Identification.............................................................................. 370
Application.................................................................................370
Setting guidelines...................................................................... 371
Pole discordance protection CCPDSC........................................... 374
Table of contents
Generator protection REG670 2.2 IEC and Injection equipment REX060, REX061, REX062 7
Application manual