ABB REB670 Applications Manual page 12

Table of contents
6
Equipment protection, such as for motors, generators,
reactors and transformers.......................................................... 240
Equipment protection, capacitors............................................... 240
Power supply quality...................................................................240
High impedance grounded systems........................................... 240
Direct grounded system..............................................................242
Settings for Two step residual overvoltage protection................242
Voltage differential protection VDCPTOV (60)..................................... 244
Identification.................................................................................... 244
Application....................................................................................... 244
Setting guidelines............................................................................ 245
Loss of voltage check LOVPTUV (27).................................................. 247
Identification.................................................................................... 247
Application....................................................................................... 247
Setting guidelines............................................................................ 247
Advanced users settings............................................................ 247
Section 9 Frequency protection.........................................................249
Underfrequency protection SAPTUF (81).............................................249
Identification.................................................................................... 249
Application....................................................................................... 249
Setting guidelines............................................................................ 250
Overfrequency protection SAPTOF (81)...............................................250
Identification.................................................................................... 251
Application....................................................................................... 251
Setting guidelines............................................................................ 251
Rate-of-change frequency protection SAPFRC (81)............................ 252
Identification.................................................................................... 252
Application....................................................................................... 252
Setting guidelines............................................................................ 253
Section 10 Multipurpose protection..................................................... 255
General current and voltage protection CVGAPC................................ 255
Identification.................................................................................... 255
Application....................................................................................... 255
Current and voltage selection for CVGAPC function..................256
Base quantities for CVGAPC function........................................ 259
Application possibilities...............................................................259
Inadvertent generator energization.............................................260
Setting guidelines............................................................................ 261
Directional negative sequence overcurrent protection............... 261
Application manual