ABB RET650 Technical Manual page 14

Table of contents
8
Design.................................................................................. 219
Technical data........................................................................... 221
Overexcitation protection OEXPVPH ............................................ 221
Identification.............................................................................. 221
Functionality.............................................................................. 221
Function block........................................................................... 222
Signals.......................................................................................222
Settings......................................................................................222
Monitored data...........................................................................223
Operation principle.................................................................... 223
Measured voltage.................................................................225
Operate time of the overexcitation protection.......................226
Cooling................................................................................. 228
Overexcitation protection function measurands................... 229
Overexcitation alarm............................................................ 229
Logic diagram.......................................................................230
Technical data........................................................................... 230
Section 10 Frequency protection....................................................231
Underfrequency protection SAPTUF ............................................. 231
Identification.............................................................................. 231
Functionality.............................................................................. 231
Function block........................................................................... 231
Signals.......................................................................................232
Settings......................................................................................232
Monitored data...........................................................................232
Operation principle.................................................................... 232
Measurement principle......................................................... 233
Time delay............................................................................233
Blocking................................................................................234
Design.................................................................................. 234
Technical data........................................................................... 234
Overfrequency protection SAPTOF ...............................................234
Identification.............................................................................. 235
Functionality.............................................................................. 235
Function block........................................................................... 235
Signals.......................................................................................235
Settings......................................................................................236
Monitored data...........................................................................236
Operation principle.................................................................... 236
Measurement principle......................................................... 236
Time delay............................................................................237
Blocking................................................................................237
Design.................................................................................. 237
Technical manual