ABB RET 670 - Page 8

Event function.........................................................................43
Binary signal status report......................................................44
IEC 60870–5–103...................................................................44
Metering.......................................................................................44
Overview................................................................................44
Pulse counter logic (GGIO)....................................................44
Setting group N.................................................................................45
Overview......................................................................................45
Differential protection...................................................................45
Overview................................................................................45
Transformer differential protection, two winding (PDIF,
87T) .......................................................................................45
Transformer differential protection, three winding (PDIF,
87T) .......................................................................................45
Restricted earth fault protection (PDIF, 87N).........................45
High impedance differential protection (PDIF, 87X)...............46
Distance protection......................................................................46
Overview................................................................................46
Distance protection zones (PDIS, 21)....................................46
Phase selection with load encroachment (PDIS, 21).............46
Directional impedance (RDIR)................................................46
Power swing detection (RPSB, 78)........................................46
Automatic switch onto fault logic (PSOF)...............................47
Current protection........................................................................47
Overview................................................................................47
Instantaneous phase overcurrent protection (PIOC, 50)........47
Four step phase overcurrent protection (POCM, 51/67)........47
Instantaneous residual overcurrent protection (PIOC,
50N)........................................................................................47
Four step residual overcurrent protection (PEFM, 51N/
67N)........................................................................................48
Thermal overload protection, two time constants (PTTR,
49) .........................................................................................48
Breaker failure protection (RBRF, 50BF)...............................48
Pole discordance protection (RPLD, 52PD)...........................48
Voltage protection........................................................................48
Overview................................................................................48
Two step undervoltage protection (PUVM, 27)......................48
Two step overvoltage protection (POVM, 59)........................49
Two step residual overvoltage protection (POVM, 59N)........49
Overexcitation protection (PVPH, 24)....................................49
Frequency protection...................................................................49
Overview................................................................................49
Underfrequency protection (PTUF, 81)..................................49
Table of contents
4 Operator's manual
1MRK504049-UEN rev. D
RET 670