ABB RELION Series Technical Manual page 15

REC615 and RER615
Technical Manual
Functionality......................................................................... 224
Operation principle .............................................................. 224
Measurement modes............................................................229
Directional overcurrent characteristics ................................ 230
Application............................................................................238
Signals..................................................................................240
Settings................................................................................ 243
Monitored data..................................................................... 248
Technical data...................................................................... 251
Technical revision history..................................................... 251
Three-phase thermal protection for feeders, cables and
distribution transformers T1PTTR............................................. 252
Identification......................................................................... 252
Function block...................................................................... 252
Functionality......................................................................... 252
Operation principle............................................................... 253
Application............................................................................256
Signals..................................................................................256
Settings................................................................................ 257
Monitored data..................................................................... 258
Technical data...................................................................... 258
Technical revision history..................................................... 258
Loss of phase, undercurrent PHPTUC...................................... 259
Identification......................................................................... 259
Function block...................................................................... 259
Functionality......................................................................... 259
Operation principle............................................................... 259
Application............................................................................261
Signals..................................................................................261
Settings................................................................................ 262
Monitored data..................................................................... 262
Technical data...................................................................... 262
Earth-fault protection...................................................................... 263
Non-directional earth-fault protection (F)EFxPTOC.................. 263
Identification......................................................................... 263
Function block...................................................................... 263
Functionality......................................................................... 263
Operation principle............................................................... 264
Measurement modes............................................................265
Timer characteristics............................................................ 266
Application............................................................................268
Signals..................................................................................269
Settings................................................................................ 270
Table of contents
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