ABB Relion 670 Series Applications Manual page 12

Table of contents
9.3.2 Application......................................................................................................................................221
9.3.3 Setting guidelines......................................................................................................................... 222
9.3.3.1
9.3.3.2
9.3.3.3
9.3.3.4
9.3.3.5
9.3.3.6
9.4 Voltage differential protection VDCPTOV (60).........................................................................226
9.4.1 Identification................................................................................................................................. 226
9.4.2 Application..................................................................................................................................... 226
9.4.3 Setting guidelines......................................................................................................................... 227
9.5 Loss of voltage check LOVPTUV (27).......................................................................................... 228
9.5.1 Identification................................................................................................................................. 228
9.5.2 Application..................................................................................................................................... 229
9.5.3 Setting guidelines.........................................................................................................................229
9.5.3.1
Section 10 Frequency protection...................................................................................... 231
10.1 Underfrequency protection SAPTUF (81)................................................................................... 231
10.1.1 Identification..................................................................................................................................231
10.1.2 Application......................................................................................................................................231
10.1.3 Setting guidelines......................................................................................................................... 231
10.2 Overfrequency protection SAPTOF (81)..................................................................................... 232
10.2.1 Identification................................................................................................................................. 232
10.2.2 Application..................................................................................................................................... 232
10.2.3 Setting guidelines.........................................................................................................................233
10.3 Rate-of-change of frequency protection SAPFRC (81)............................................................ 233
10.3.1 Identification................................................................................................................................. 233
10.3.2 Application..................................................................................................................................... 233
10.3.3 Setting guidelines.........................................................................................................................234
10.4 Frequency time accumulation protection function FTAQFVR (81A).....................................235
10.4.1 Identification................................................................................................................................. 235
10.4.2 Application..................................................................................................................................... 235
10.4.3 Setting guidelines......................................................................................................................... 237
Section 11 Multipurpose protection................................................................................ 239
11.1 General current and voltage protection CVGAPC.....................................................................239
11.1.1 Identification................................................................................................................................. 239
11.1.2 Application..................................................................................................................................... 239
11.1.2.1
11.1.2.2
11.1.2.3
6
Equipment protection, such as for motors, generators, reactors and
transformersEquipment protection for transformers.................................................... 222
Equipment protection, capacitors.......................................................................................222
Power supply quality...............................................................................................................222
High impedance grounded systems....................................................................................223
Direct grounded system........................................................................................................ 223
Settings for two step residual overvoltage protection...................................................224
Advanced users settings........................................................................................................229
Current and voltage selection for CVGAPC function....................................................... 240
Base quantities for CVGAPC function................................................................................. 242
Application possibilities........................................................................................................ 243
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Bay control REC670
Application manual