
9.1.1 Introduction........................................................................................................................57
9.1.2 Disturbance report settings............................................................................................... 57
9.1.3 Disturbance recorder (DR)................................................................................................ 57
9.1.4 Event recorder (ER) and Event list (EL)............................................................................58
9.2 Identifying the function to test in the technical reference manual .......................................58
9.3 Differential protection.......................................................................................................... 58
9.3.1 High impedance differential protection HZPDIF ...............................................................58
9.3.1.1 Verifying the settings.................................................................................................... 58
9.3.1.2 Completing the test...................................................................................................... 59
9.4 Current protection................................................................................................................59
9.4.1 Directional phase overcurrent protection, four steps OC4PTOC ..................................... 59
9.4.1.1 Function revision history.............................................................................................. 59
9.4.1.2 Verifying the settings.................................................................................................... 60
9.4.1.3 Completing the test...................................................................................................... 61
9.4.2 Four step residual overcurrent protection, (Zero sequence or negative sequence
directionality) EF4PTOC ...................................................................................................61
9.4.2.1 Function revision history.............................................................................................. 61
9.4.2.2 Four step directional earth fault protection ..................................................................61
9.4.2.3 Four step non-directional earth fault protection ...........................................................62
9.4.2.4 Completing the test...................................................................................................... 62
9.4.3 Four step negative sequence overcurrent protection NS4PTOC .....................................62
9.4.3.1 Function revision history.............................................................................................. 62
9.4.3.2 Completing the test...................................................................................................... 63
9.4.4 Thermal overload protection, two time constants TRPTTR ..............................................63
9.4.4.1 Checking operate and reset values..............................................................................63
9.4.4.2 Completing the test...................................................................................................... 64
9.4.5 Breaker failure protection, phase segregated activation and output CCRBRF ................ 64
9.4.5.1 Function revision history.............................................................................................. 64
9.4.5.2 Checking the phase current operate value, IP> ..........................................................64
9.4.5.3 Checking the residual (earth fault) current operate value IN> set below IP> ..............65
9.4.5.4 Checking the re-trip and back-up times....................................................................... 65
9.4.5.5 Verifying the re-trip mode............................................................................................. 65
9.4.5.6 Verifying the back-up trip mode ...................................................................................66
9.4.5.7 Verifying instantaneous back-up trip at CB faulty condition......................................... 66
9.4.5.8 Verifying the case RetripMode = Contact.....................................................................67
9.4.5.9 Verifying the function mode Current/Contact............................................................... 67
9.4.5.10 Completing the test...................................................................................................... 68
9.4.6 Pole discordance protection CCPDSC..............................................................................68
9.4.6.1 Verifying the settings.................................................................................................... 68
9.4.6.2 Completing the test...................................................................................................... 68
9.5 Voltage protection................................................................................................................69
9.5.1 Two step undervoltage protection UV2PTUV ...................................................................69
9.5.1.1 Verifying the settings.................................................................................................... 69
9.5.1.2 Completing the test...................................................................................................... 70
9.5.2 Two step overvoltage protection OV2PTOV .....................................................................70
9.5.2.1 Verifying the settings.................................................................................................... 70
1MRK 505 390-UEN Rev. F Table of contents
Busbar protection REB650 3
Commissioning manual
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