ABB REG650 Technical Manual page 15

Technical Manual
Operation principle....................................................................249
Technical data...........................................................................254
Section 9 Frequency protection....................................................255
Underfrequency protection SAPTUF .............................................255
Identification..............................................................................255
Functionality..............................................................................255
Function block...........................................................................255
Signals.......................................................................................255
Settings......................................................................................256
Monitored data...........................................................................256
Operation principle....................................................................256
Measurement principle.........................................................256
Time delay............................................................................257
Blocking................................................................................257
Design..................................................................................257
Technical data...........................................................................258
Overfrequency protection SAPTOF ...............................................258
Identification..............................................................................259
Functionality..............................................................................259
Function block...........................................................................259
Signals.......................................................................................259
Settings......................................................................................260
Monitored data...........................................................................260
Operation principle....................................................................260
Measurement principle.........................................................260
Time delay............................................................................260
Blocking................................................................................261
Design..................................................................................261
Technical data...........................................................................262
Rate-of-change frequency protection SAPFRC .............................262
Identification..............................................................................262
Functionality..............................................................................262
Function block...........................................................................262
Signals.......................................................................................263
Settings......................................................................................263
Operation principle....................................................................263
Measurement principle.........................................................264
Time delay............................................................................264
Design..................................................................................265
Technical data...........................................................................265
Section 10 Secondary system supervision.....................................267
Fuse failure supervision SDDRFUF...............................................267
Table of contents
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