ABB Relion 670 series - Page 16

Identification.................................................................................... 476
Application....................................................................................... 476
Setting guidelines............................................................................ 480
Phase preference logic PPL2PHIZ....................................................... 481
Identification.................................................................................... 481
Application....................................................................................... 481
Setting guidelines............................................................................ 485
Section 9 Current protection..............................................................487
Instantaneous phase overcurrent protection PHPIOC (50).................. 487
Identification.................................................................................... 487
Application....................................................................................... 487
Setting guidelines............................................................................ 488
Meshed network without parallel line..........................................489
Meshed network with parallel line...............................................491
Directional phase overcurrent protection, four steps
OC4PTOC(51_67)................................................................................ 492
Identification.................................................................................... 492
Application....................................................................................... 492
Setting guidelines............................................................................ 494
Settings for each step.................................................................495
Setting example..........................................................................499
Instantaneous residual overcurrent protection EFPIOC (50N)............. 504
Identification.................................................................................... 504
Application....................................................................................... 504
Setting guidelines............................................................................ 504
Directional residual overcurrent protection, four steps EF4PTOC
(51N/67N)............................................................................................. 507
Identification.................................................................................... 507
Application....................................................................................... 508
Setting guidelines............................................................................ 510
Common settings for all steps.................................................... 510
2nd harmonic restrain.................................................................512
Parallel transformer inrush current logic.....................................512
Switch onto fault logic.................................................................513
Settings for each step (x = 1, 2, 3 and 4)................................... 514
Line application example............................................................ 517
Four step directional negative phase sequence overcurrent
protection NS4PTOC (46I2)..................................................................522
Identification.................................................................................... 522
Application....................................................................................... 522
Table of contents
10 Line distance protection REL670 2.2 ANSI
Application manual