ABB RET670 Commissioning Manual

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Contents

ABB RET670 Commissioning Manual Manual pdf 11 page image

10.4.15 Under impedance protection for Generator ZGVPDIS..............................................................13410.4.15.1 Verifying the settings...................................................................................................................13410.4.15.2 Completing the test......................................................................................................................13710.5 Current protection................................................................................................................................13710.5.1 Instantaneous phase overcurrent protection 3-phase output PHPIOC (50)........................13710.5.1.1 Measuring the trip limit of set values....................................................................................... 13810.5.1.2 Completing the test..................................................................................................................... 13810.5.2 Four step phase overcurrent protection 3-phase output OC4PTOC (51_67).......................13810.5.2.1 Verifying the settings...................................................................................................................13810.5.2.2 Completing the test..................................................................................................................... 13910.5.3 Instantaneous residual overcurrent protection EFPIOC (50N)...............................................13910.5.3.1 Measuring the trip limit of set values.......................................................................................14010.5.3.2 Completing the test..................................................................................................................... 14010.5.4 Four step residual overcurrent protection, (Zero sequence or negative sequencedirectionality) EF4PTOC (51N/67N)............................................................................................. 14010.5.4.1 Four step directional ground fault protection....................................................................... 14010.5.4.2 Four step non-directional ground fault protection................................................................14110.5.4.3 Completing the test......................................................................................................................14110.5.5 Four step negative sequence overcurrent protection NS4PTOC (46I2)................................14110.5.5.1 Completing the test..................................................................................................................... 14210.5.6 Sensitive directional residual overcurrent and power protection SDEPSDE (67N)............ 14210.5.6.1 Measuring the trip and time limit for set values.................................................................... 14210.5.6.2 Completing the test..................................................................................................................... 14710.5.7 Thermal overload protection, one time constant, Fahrenheit/Celsius LFPTTR/LCPTTR (26)....................................................................................................................................... 14810.5.7.1 Measuring the trip and time limit of set values......................................................................14810.5.7.2 Completing the test..................................................................................................................... 14810.5.8 Thermal overload protection, two time constants TRPTTR (49)............................................14910.5.8.1 Checking trip and reset values...................................................................................................14910.5.8.2 Completing the test..................................................................................................................... 14910.5.9 Breaker failure protection, phase segregated activation and output CCRBRF (50BF)..... 15010.5.9.1 Checking the phase current trip value,Pickup_PH................................................................ 15010.5.9.2 Checking the residual (ground fault) current trip valuePickup_Nset belowPickup_PH....................................................................................................................15010.5.9.3 Checking the re-trip and back-up times.................................................................................. 15010.5.9.4 Verifying the re-trip mode........................................................................................................... 15110.5.9.5 Verifying the back-up trip mode................................................................................................ 15110.5.9.6 Verifying instantaneous back-up trip at CB faulty condition.............................................. 15210.5.9.7 Verifying the caseRetripMode =Contact................................................................................ 15310.5.9.8 Verifying the function modeCurrent&Contact.......................................................................15310.5.9.9 Completing the test..................................................................................................................... 15410.5.10 Pole discrepancy protection CCPDSC (52PD).............................................................................15410.5.10.1 Verifying the settings...................................................................................................................154Table of contents5Commissioning manual