ABB RED650 Technical Manual page 12

Table of contents
6
Monitored data...........................................................................231
Operation principle.................................................................... 231
Measurement principle......................................................... 232
Time delay............................................................................232
Blocking................................................................................238
Design.................................................................................. 239
Technical data........................................................................... 240
Two step overvoltage protection OV2PTOV ..................................241
Identification.............................................................................. 241
Functionality OV2PTOV............................................................ 241
Function block........................................................................... 242
Signals.......................................................................................242
Settings......................................................................................243
Monitored data...........................................................................245
Operation principle.................................................................... 245
Measurement principle......................................................... 246
Time delay............................................................................246
Blocking................................................................................252
Design.................................................................................. 252
Technical data........................................................................... 253
Two step residual overvoltage protection ROV2PTOV ................. 254
Identification.............................................................................. 254
Functionality.............................................................................. 254
Function block........................................................................... 255
Signals.......................................................................................255
Settings......................................................................................256
Monitored data...........................................................................257
Operation principle.................................................................... 258
Measurement principle......................................................... 258
Time delay............................................................................258
Blocking................................................................................263
Design.................................................................................. 263
Technical data........................................................................... 264
Section 10 Frequency protection....................................................267
Underfrequency protection SAPTUF ............................................. 267
Identification.............................................................................. 267
Functionality.............................................................................. 267
Function block........................................................................... 267
Signals.......................................................................................268
Settings......................................................................................268
Operation principle.................................................................... 269
Measurement principle......................................................... 269
Time delay............................................................................269
Line differential protection RED650 2.2 IEC
Technical manual