ABB Relion 650 Series Applications Manual page 9

7.1.3.1
7.1.3.2
7.2 Four step residual overcurrent protection, zero, negative sequence direction
EF4PTOC (51N/67N).........................................................................................................................80
7.2.1 Identification................................................................................................................................... 80
7.2.2 Application.......................................................................................................................................80
7.2.3 Setting guidelines........................................................................................................................... 81
7.2.3.1
7.2.3.2
7.2.3.3
7.3 Thermal overload protection, two time constants TRPTTR (49)............................................ 85
7.3.1 Identification................................................................................................................................... 85
7.3.2 Application....................................................................................................................................... 85
7.3.3 Setting guideline.............................................................................................................................86
7.4 Breaker failure protection 3-phase activation and output CCRBRF (50BF)..........................88
7.4.1 Identification................................................................................................................................... 88
7.4.2 Application....................................................................................................................................... 88
7.4.3 Setting guidelines...........................................................................................................................89
7.5 Pole discrepancy protection CCRPLD (52PD).............................................................................. 91
7.5.1 Identification....................................................................................................................................91
7.5.2 Application....................................................................................................................................... 91
7.5.3 Setting guidelines...........................................................................................................................92
7.6 Negative sequence based overcurrent function DNSPTOC (46).............................................93
7.6.1 Identification................................................................................................................................... 93
7.6.2 Application....................................................................................................................................... 93
7.6.3 Setting guidelines...........................................................................................................................93
Section 8 Voltage protection............................................................................................ 95
8.1 Two step undervoltage protection UV2PTUV (27)..................................................................... 95
8.1.1 Identification................................................................................................................................... 95
8.1.2 Application....................................................................................................................................... 95
8.1.3 Setting guidelines...........................................................................................................................96
8.1.3.1
8.1.3.2
8.1.3.3
8.1.3.4
8.1.3.5
8.1.3.6
8.2 Two step overvoltage protection OV2PTOV (59)....................................................................... 97
8.2.1 Identification................................................................................................................................... 98
8.2.2 Application....................................................................................................................................... 98
8.2.3 Setting guidelines...........................................................................................................................98
8.3 Two step residual overvoltage protection ROV2PTOV (59N)................................................ 100
Busbar protection REB650
Application manual
Settings for steps 1 to 4 .......................................................................................................... 73
2nd harmonic restrain.............................................................................................................. 75
Settings for steps 1 and 4 .......................................................................................................82
Common settings for all steps............................................................................................... 83
2nd harmonic restrain.............................................................................................................. 85
Equipment protection, such as for motors and generators............................................ 96
Disconnected equipment detection..................................................................................... 96
Power supply quality ............................................................................................................... 96
Voltage instability mitigation.................................................................................................96
Backup protection for power system faults........................................................................96
Settings for Two step undervoltage protection.................................................................96
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