ABB REG670 - Page 12

Current protection........................................................................64
Voltage protection .......................................................................
64
Frequency protection...................................................................64
Multipurpose protection ..............................................................64
Secondary system protection .....................................................64
Control ........................................................................................64
Monitoring....................................................................................65
Logic............................................................................................65
Function status.................................................................................65
Differential protection...................................................................65
Generator differential protection GENPDIF............................65
Transformer differential protection, two winding
T2WPDIF ...............................................................................65
Transformer differential protection, three winding
T3WPDIF ...............................................................................65
Restricted earth fault protection, low impedance
REFPDIF ...............................................................................66
High impedance differential protection HZPDIF ....................66
Impedance protection..................................................................66
Full-scheme distance protection, mho characteristic
ZMHPDIS...............................................................................66
Directional impedance ZDRDIR ............................................66
Directional impedance element for mho characteristic
ZDMRDIR...............................................................................66
Current protection........................................................................67
Breaker failure protection CCRBRF.......................................67
Directional over-power protection GOPPDOP.......................67
Directional under-power protection GUPPDUP......................67
Instantaneous phase overcurrent protection PHPIOC...........67
Instantaneous residual overcurrent protection EFPIOC.........67
Four step directional negative phase sequence
overcurrent protection NS4PTOC..........................................67
Four step phase overcurrent protection OC4PTOC...............68
Pole discordance protection CCRPLD...................................68
Four step residual overcurrent protection EF4PTOC.............68
Sensitive directional residual over current and power
protection SDEPSDE.............................................................68
Thermal overload protection, two time constants
TRPTTR.................................................................................68
Voltage protection........................................................................69
Overexcitation protection OEXPVPH.....................................69
Two step overvoltage protection OV2PTOV..........................69
Two step residual overvoltage protection ROV2PTOV..........69
Table of contents
6
Operator's manual