ABB REL670 Installation And Commissioning Manual page 6

Two step overvoltage protection (POVM, 59)............................. 118
Two step residual overvoltage protection (POVM, 59N)............. 118
Frequency protection ....................................................................... 120
Underfrequency protection (PTUF, 81)....................................... 120
Overfrequency protection (PTOF, 81) ........................................ 121
Rate-of-change frequency protection (PFRC, 81) ...................... 122
Multipurpose protection ................................................................... 124
General current and voltage protection (GAPC)......................... 124
Secondary system supervision ........................................................ 127
Current circuit supervision (RDIF) .............................................. 127
Fuse failure supervision (RFUF)................................................. 127
Control ............................................................................................. 131
Synchrocheck and energizing check (RSYN, 25)....................... 131
Autorecloser (RREC, 79) ............................................................ 141
Apparatus control (APC)............................................................. 147
Interlocking ................................................................................. 147
Scheme communication................................................................... 148
Scheme communication logic for
distance protection (PSCH, 85)
Current reversal and weak end infeed logic for distance
protection (PSCH, 85) ............................................................... 150
Local acceleration logic (PLAL) .................................................. 152
Scheme communication logic for residual
overcurrent protection (PSCH, 85) ........................................... 152
Current reversal and weak end infeed logic for residual
overcurrent protection (PSCH, 85) ........................................... 154
Logic ................................................................................................ 157
Tripping logic (PTRC, 94) ........................................................... 157
Monitoring ........................................................................................ 161
Event counter (GGIO)................................................................. 161
Event function (EV)..................................................................... 161
Fault locator (RFLO) ................................................................... 161
Metering ........................................................................................... 164
Pulse counter logic (GGIO)......................................................... 164
Remote communication ................................................................... 165
Binary signal transfer to remote end........................................... 165
Chapter 12 Commissioning and maintenance of the fault
clearing system ........................................................... 167
Installation and commissioning ........................................................ 168
Commissioning tests........................................................................ 169
Periodic maintenance tests.............................................................. 170
Visual inspection......................................................................... 170
Maintenance tests....................................................................... 170
Chapter 13 Fault tracing and repair............................................... 173
Fault tracing ..................................................................................... 174
Information on the local HMI....................................................... 174
Contents
............................................ 148