ABB RET650 Applications Manual

Also see for ret650: Applications manual Commissioning manual Commissioning manual Product guide Applications manual

Contents

Power supply quality............................................................ 152High impedance earthed systems........................................ 152Direct earthed system.......................................................... 153Settings for two step residual overvoltage protection...........154Overexcitation protection OEXPVPH ............................................ 156Identification.............................................................................. 156Application................................................................................. 156Setting guidelines...................................................................... 158Recommendations for input and output signals................... 158Settings................................................................................ 159Service value report............................................................. 160Setting example....................................................................160Section 9 Frequency protection....................................................163Underfrequency protection SAPTUF ............................................. 163Identification.............................................................................. 163Application................................................................................. 163Setting guidelines...................................................................... 163Overfrequency protection SAPTOF ...............................................164Identification.............................................................................. 164Application................................................................................. 165Setting guidelines...................................................................... 165Rate-of-change of frequency protection SAPFRC .........................166Identification.............................................................................. 166Application................................................................................. 166Setting guidelines...................................................................... 166Section 10 Secondary system supervision.....................................169Current circuit supervision CCSSPVC............................................169Identification.............................................................................. 169Application................................................................................. 169Setting guidelines...................................................................... 169Fuse failure supervision FUFSPVC................................................170Identification.............................................................................. 170Application................................................................................. 170Setting guidelines...................................................................... 171General.................................................................................171Setting of common parameters............................................ 171Negative sequence based....................................................172Zero sequence based...........................................................173Delta U and delta I ...............................................................173Dead line detection...............................................................174Section 11 Control..........................................................................175Table of contentsTransformer protection RET650 2.2 IEC 5Application manual