ABB RET670 Commissioning Manual page 12

Table of contents
6
Sensitive directional residual overcurrent and power
protection SDEPSDE ................................................................178
Measuring the operate and time limit for set values.............178
Completing the test.............................................................. 184
Thermal overload protection, two time constants TRPTTR ......184
Checking operate and reset values......................................184
Completing the test.............................................................. 185
Breaker failure protection, phase segregated activation and
output CCRBRF.........................................................................185
Checking the phase current operate value,
Checking the residual (earth fault) current operate value
IN> set below IP> ................................................................. 186
Checking the re-trip and back-up times................................186
Verifying the re-trip mode..................................................... 186
Verifying the back-up trip mode............................................187
Verifying instantaneous back-up trip at CB faulty condition. 188
Verifying the function mode
Completing the test.............................................................. 189
Stub protection STBPTOC........................................................ 189
Measuring the operate limit of set values.............................189
Completing the test.............................................................. 190
Pole discordance protection CCPDSC...................................... 190
Verifying the settings............................................................ 190
Completing the test.............................................................. 191
Directional underpower protection GUPPDUP ......................... 191
Verifying the settings............................................................ 191
Completing the test.............................................................. 193
Directional overpower protection GOPPDOP ...........................193
Verifying the settings............................................................ 193
Completing the test.............................................................. 194
Broken conductor check BRCPTOC ........................................ 194
Measuring the operate and time limit of set values.............. 194
Completing the test.............................................................. 194
Capacitor bank protection CBPGAPC....................................... 195
Verifying the settings and operation of the function............. 195
Completing the test.............................................................. 199
Negative-sequence time overcurrent protection for
machines NS2PTOC ................................................................ 199
Verifying settings by secondary injection............................. 199
Completing the test.............................................................. 201
Voltage-restrained time overcurrent protection VRPVOC......... 201
Verifying the settings............................................................ 201
Completing the test.............................................................. 205
Voltage protection...........................................................................205
IP> ................... 185
Current/Contact ....................... 188
Transformer protection RET670 2.2 IEC
Commissioning manual