Table of Contents
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Table of contents
11.5.7.1
11.5.7.2
11.5.8
Thermal overload protection, two time constants TRPTTR ............................................170
11.5.8.1
11.5.8.2
11.5.9
Breaker failure protection, phase segregated activation and output CCRBRF .............. 171
11.5.9.1
11.5.9.2
11.5.9.3
11.5.9.4
11.5.9.5
11.5.9.6
11.5.9.7
11.5.9.8
11.5.9.9
11.5.9.10
11.5.9.11
11.5.9.12
11.5.9.13
11.5.9.14
11.5.9.15
11.5.10
Stub protection STBPTOC.............................................................................................. 176
11.5.10.1
11.5.10.2
11.5.10.3
11.5.11
Overcurrent protection with binary release BRPTOC......................................................177
11.5.11.1
11.5.11.2
11.5.11.3
11.5.12
Pole discordance protection CCPDSC............................................................................178
11.5.12.1
11.5.12.2
11.5.13
Directional underpower protection GUPPDUP ...............................................................179
11.5.13.1
11.5.13.2
11.5.14
Directional overpower protection GOPPDOP .................................................................180
11.5.14.1
11.5.14.2
11.5.15
Broken conductor check BRCPTOC .............................................................................. 181
11.5.15.1
11.5.15.2
11.5.15.3
11.5.16
Capacitor bank protection CBPGAPC.............................................................................182
11.5.16.1
11.5.16.2
11.5.17
Negative-sequence time overcurrent protection for machines NS2PTOC ..................... 185
6
Measuring the operate and time limit of set values....................................................169
Completing the test.................................................................................................... 170
Checking operate and reset values............................................................................170
Completing the test.................................................................................................... 171
Function revision history............................................................................................ 171
Checking the phase current operate value, IP> ........................................................ 171
Checking the re-trip and back-up times..................................................................... 172
Verifying the re-trip mode........................................................................................... 172
Verifying the back-up trip mode .................................................................................173
Verifying instantaneous back-up trip at CB faulty condition....................................... 173
Verifying the case FunctionMode = CB Pos...............................................................173
Verifying the case RetripMode = Contact...................................................................174
Verifying the caseFunctionMode = Current or CB Pos...............................................174
Verifying the external start signal has timed out.........................................................175
Verifying that backup signal is released when STALARM is reset............................. 175
Test of FollowStart&Mode behaviour......................................................................... 175
Test of FollowStart behaviour.....................................................................................175
Completing the test.................................................................................................... 175
Function revision history............................................................................................ 176
Measuring the operate limit of set values...................................................................176
Completing the test.................................................................................................... 176
Function revision history............................................................................................ 177
Measuring the operate limit of set values...................................................................177
Completing the test.................................................................................................... 178
Verifying the settings.................................................................................................. 178
Completing the test.................................................................................................... 178
Verifying the settings.................................................................................................. 179
Completing the test.................................................................................................... 180
Verifying the settings.................................................................................................. 180
Completing the test.................................................................................................... 181
Function revision history............................................................................................ 181
Measuring the operate and time limit of set values....................................................181
Completing the test.................................................................................................... 182
Verifying the settings and operation of the function................................................... 182
Completing the test.................................................................................................... 185
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1MRK 504 165-UEN Rev. K
Transformer protection RET670
Commissioning manual
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