
11.4.4.1 Function revision history.....................................................................................................95
11.4.4.2 Four step directional ground fault protection .....................................................................95
11.4.4.3 Four step non-directional ground fault protection ..............................................................96
11.4.4.4 Completing the test............................................................................................................ 96
11.4.5 Four step negative sequence overcurrent protection NS4PTOC (46I2)..................................96
11.4.5.1 Function revision history.....................................................................................................96
11.4.5.2 Completing the test............................................................................................................ 97
11.4.6 Sensitive directional residual overcurrent and power protection SDEPSDE (67N).................97
11.4.6.1 Measuring the trip and time limit for set values..................................................................98
11.4.6.2 Completing the test.......................................................................................................... 102
11.4.7 Thermal overload protection, one time constant, Fahrenheit/Celsius LFPTTR/
LCPTTR (26).........................................................................................................................102
11.4.7.1 Measuring the trip and time limit of set values................................................................. 102
11.4.7.2 Completing the test.......................................................................................................... 103
11.4.8 Thermal overload protection, two time constants TRPTTR (49)........................................... 103
11.4.8.1 Checking trip and reset values.........................................................................................103
11.4.8.2 Completing the test.......................................................................................................... 104
11.4.9 Breaker failure protection, phase segregated activation and output CCRBRF (50BF) ........ 104
11.4.9.1 Function revision history...................................................................................................104
11.4.9.2 Checking the phase current trip value, Pickup_PH .........................................................105
11.4.9.3 Checking the residual (ground fault) current trip value Pickup_N set below Pickup_PH 105
11.4.9.4 Checking the re-trip and back-up times............................................................................105
11.4.9.5 Verifying the re-trip mode................................................................................................. 105
11.4.9.6 Verifying the back-up trip mode .......................................................................................106
11.4.9.7 Verifying instantaneous back-up trip at CB faulty condition............................................. 107
11.4.9.8 Verifying the case FunctionMode = CB Pos.....................................................................107
11.4.9.9 Verifying the case RetripMode = Contact.........................................................................107
11.4.9.10 Verifying the caseFunctionMode = Current or CB Pos.....................................................108
11.4.9.11 Verifying the external start signal has timed out...............................................................108
11.4.9.12 Verifying that backup signal is released when STALARM is reset................................... 109
11.4.9.13 Test of FollowStart&Mode behaviour................................................................................109
11.4.9.14 Test of FollowStart behaviour...........................................................................................109
11.4.9.15 Completing the test.......................................................................................................... 109
11.4.10 Stub protection STBPTOC (50STB)......................................................................................109
11.4.10.1 Function revision history...................................................................................................110
11.4.10.2 Measuring the trip limit of set values................................................................................ 110
11.4.10.3 Completing the test...........................................................................................................110
11.4.11 Overcurrent protection with binary release BRPTOC............................................................ 111
11.4.11.1 Function revision history................................................................................................... 111
11.4.11.2 Measuring the operate limit of set values......................................................................... 111
11.4.11.3 Completing the test...........................................................................................................112
11.4.12 Pole discrepancy protection CCPDSC (52PD)......................................................................112
11.4.12.1 Verifying the settings........................................................................................................ 112
Table of contents 1MRK 511 403-UUS Rev. K
4Bay control REC670
Commissioning manual
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