ABB Relion 670 Series Applications Manual page 11

1MRK 511 401-UEN Rev. K
8.16.2 Application.............................................................................................................................. 203
8.16.2.1
8.16.2.2
8.16.2.3
8.16.3 Setting guidelines..................................................................................................................205
8.16.3.1
8.16.3.2
8.16.3.3
8.17 Average Power Transient Earth Fault Protection, APPTEF.............................................. 207
8.17.1 Identification...........................................................................................................................207
8.17.2 Application.............................................................................................................................. 207
8.17.2.1
8.17.2.2
8.17.3 Settings guidelines................................................................................................................209
8.17.4 Setting example......................................................................................................................210
Section 9 Voltage protection..................................................................................... 213
9.1 Two step undervoltage protection UV2PTUV .................................................................... 213
9.1.1 Identification........................................................................................................................... 213
9.1.2 Application............................................................................................................................... 213
9.1.3 Setting guidelines...................................................................................................................213
9.1.3.1
9.1.3.2
9.1.3.3
9.1.3.4
9.1.3.5
9.1.3.6
9.2 Two step overvoltage protection OV2PTOV ...................................................................... 215
9.2.1 Identification...........................................................................................................................216
9.2.2 Application...............................................................................................................................216
9.2.3 Setting guidelines.................................................................................................................. 216
9.2.3.1
9.2.3.2
9.2.3.3
9.2.3.4
9.2.3.5
9.3 Two step residual overvoltage protection ROV2PTOV .................................................... 219
9.3.1 Identification...........................................................................................................................219
9.3.2 Application...............................................................................................................................219
9.3.3 Setting guidelines.................................................................................................................. 219
9.3.3.1
9.3.3.2
9.3.3.3
9.3.3.4
Bay control REC670
Application manual
Base quantities................................................................................................................. 204
Application possibilities................................................................................................. 204
Undervoltage seal-in........................................................................................................204
Explanation of the setting parameters........................................................................205
Voltage-restrained overcurrent protection for generator and step-up
transformer....................................................................................................................... 206
Overcurrent protection with undervoltage seal-in.................................................... 207
CT and VT inputs.............................................................................................................. 208
Global Base Value Settings.............................................................................................209
Equipment protection, such as for motors and generators....................................214
Disconnected equipment detection............................................................................. 214
Power supply quality ....................................................................................................... 214
Voltage instability mitigation........................................................................................ 214
Backup protection for power system faults............................................................... 214
Settings for two step undervoltage protection......................................................... 214
Equipment protection, such as for motors, generators, reactors and
transformers...................................................................................................................... 217
Equipment protection, capacitors................................................................................ 217
Power supply quality........................................................................................................ 217
High impedance earthed systems................................................................................. 217
The following settings can be done for the two step overvoltage protection.....217
Equipment protection, such as for motors, generators, reactors and
transformersEquipment protection for transformers............................................. 220
Equipment protection, capacitors................................................................................220
Power supply quality........................................................................................................220
High impedance earthed systems................................................................................ 220
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