ABB Relion 670 Series REL670 - Page 11

Current protection...........................................................................145
Instantaneous phase overcurrent protection 3-phase output
PHPIOC ....................................................................................145
Measuring the operate limit of set values.............................145
Completing the test.............................................................. 145
Four step phase overcurrent protection 3-phase output
OC4PTOC................................................................................. 145
Verifying the settings............................................................ 146
Completing the test.............................................................. 147
Instantaneous residual overcurrent protection EFPIOC ........... 147
Measuring the operate limit of set values.............................147
Completing the test.............................................................. 147
Four step residual overcurrent protection, (Zero sequence or
negative sequence directionality) EF4PTOC ............................148
Four step directional earth fault protection........................... 148
Four step non-directional earth fault protection....................148
Completing the test.............................................................. 149
Four step negative sequence overcurrent protection
NS4PTOC .................................................................................149
Completing the test.............................................................. 150
Sensitive directional residual overcurrent and power
protection SDEPSDE ................................................................150
Measuring the operate and time limit for set values.............150
Completing the test.............................................................. 156
Thermal overload protection, one time constant, Celsius/
Fahrenheit LCPTTR/LFPTTR....................................................156
Measuring the operate and time limit of set values.............. 156
Completing the test.............................................................. 157
Breaker failure protection, phase segregated activation and
output CCRBRF.........................................................................157
Checking the phase current operate value, IP> ................... 157
Checking the residual (earth fault) current operate value
IN> set below IP> ................................................................. 158
Checking the re-trip and back-up times................................158
Verifying the re-trip mode..................................................... 158
Verifying the back-up trip mode............................................159
Verifying instantaneous back-up trip at CB faulty condition. 160
Verifying the case RetripMode = Contact .............................160
Verifying the function mode Current&Contact ...................... 161
Completing the test.............................................................. 161
Stub protection STBPTOC........................................................ 161
Measuring the operate limit of set values.............................162
Completing the test.............................................................. 162
Pole discordance protection CCPDSC...................................... 162
Table of contents
Line distance protection REL670 2.1 IEC 5
Commissioning manual