ABB Relion 670 Series Applications Manual page 11

1MRK 505 370-UUS Rev. K
7.10.2 Application............................................................................................................................. 211
7.10.2.1
7.10.3 Setting guidelines.................................................................................................................. 214
7.10.3.1
Section 8 Voltage protection...........................................................................................219
8.1 Two step undervoltage protection UV2PTUV (27).................................................................. 219
8.1.1 Identification.......................................................................................................................... 219
8.1.2 Setting guidelines.................................................................................................................. 219
8.1.2.1
8.1.2.2
8.1.2.3
8.1.2.4
8.1.2.5
8.1.2.6
8.2 Two step overvoltage protection OV2PTOV (59).................................................................... 221
8.2.1 Identification.......................................................................................................................... 221
8.2.2 Application.............................................................................................................................221
8.2.3 Setting guidelines.................................................................................................................. 222
8.2.3.1
8.2.3.2
8.2.3.3
8.2.3.4
8.2.3.5
8.3 Two step residual overvoltage protection ROV2PTOV (59N)..................................................225
8.3.1 Function revision history........................................................................................................225
8.3.2 Identification.......................................................................................................................... 225
8.3.3 Application.............................................................................................................................225
8.3.4 Setting guidelines.................................................................................................................. 226
8.3.4.1
8.3.4.2
8.3.4.3
8.3.4.4
8.3.4.5
8.3.4.6
8.4 Voltage differential protection VDCPTOV (60)........................................................................ 229
8.4.1 Function revision history........................................................................................................229
8.4.2 Identification.......................................................................................................................... 229
8.4.3 Application.............................................................................................................................230
8.4.4 Setting guidelines.................................................................................................................. 230
8.5 Loss of voltage check LOVPTUV (27).....................................................................................232
8.5.1 Identification.......................................................................................................................... 232
Busbar protection REB670
Application manual
SCB protection................................................................................................................. 213
Restrike detection.............................................................................................................217
Equipment protection, such as for motors and generators...............................................219
Disconnected equipment detection.................................................................................. 219
Power supply quality ....................................................................................................... 219
Voltage instability mitigation............................................................................................. 220
Backup protection for power system faults.......................................................................220
Settings for two step undervoltage protection.................................................................. 220
Equipment protection, such as for motors, generators, reactors and transformers......... 222
Equipment protection, capacitors..................................................................................... 222
Power supply quality........................................................................................................ 223
High impedance grounded systems................................................................................. 223
The following settings can be done for the two step overvoltage protection.................... 223
Equipment protection, such as for motors, generators, reactors and transformers
Equipment protection for transformers ............................................................................ 226
Equipment protection, capacitors..................................................................................... 226
Power supply quality........................................................................................................ 226
High impedance grounded systems ................................................................................ 226
Direct grounded system .................................................................................................. 227
Settings for two step residual overvoltage protection.......................................................227
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