ABB REL670 2.2 IEC - Page 23

Identification.............................................................................. 696
Application.................................................................................696
Setting guidelines...................................................................... 698
Section 16 Scheme communication...............................................701
Scheme communication logic for distance or overcurrent
protection ZCPSCH........................................................................ 701
Identification.............................................................................. 701
Application.................................................................................701
Blocking schemes................................................................ 702
Delta blocking scheme......................................................... 703
Permissive schemes............................................................ 704
Intertrip scheme....................................................................706
Setting guidelines...................................................................... 707
Blocking scheme.................................................................. 707
Delta blocking scheme......................................................... 707
Permissive underreaching scheme...................................... 708
Permissive overreaching scheme........................................ 708
Unblocking scheme.............................................................. 708
Intertrip scheme....................................................................708
Phase segregated scheme communication logic for distance
protection ZC1PPSCH ...................................................................709
Identification.............................................................................. 709
Application.................................................................................709
Blocking scheme.................................................................. 711
Permissive schemes............................................................ 711
Intertrip scheme....................................................................713
Setting guidelines...................................................................... 713
Permissive underreache scheme......................................... 713
Permissive overreach scheme............................................. 714
Blocking scheme.................................................................. 714
Intertrip scheme....................................................................714
Current reversal and Weak-end infeed logic for distance
protection 3-phase ZCRWPSCH ................................................... 714
Identification.............................................................................. 714
Application.................................................................................714
Current reversal logic........................................................... 714
Weak-end infeed logic..........................................................715
Setting guidelines...................................................................... 716
Current reversal logic........................................................... 717
Weak-end infeed logic..........................................................717
Current reversal and weak-end infeed logic for phase
segregated communication ZC1WPSCH ...................................... 717
Identification.............................................................................. 717
Table of contents
Line distance protection REL670 2.2 IEC 17
Application manual