ABB RELION 620 Series Technical Manual page 15

620 series
Technical Manual
Monitored data..................................................................... 257
Technical data...................................................................... 258
Three-phase directional overcurrent protection DPHxPDOC.... 259
Identification......................................................................... 259
Function block...................................................................... 259
Functionality......................................................................... 259
Operation principle .............................................................. 260
Measurement modes............................................................265
Directional overcurrent characteristics ................................ 265
Application............................................................................273
Signals..................................................................................275
Settings................................................................................ 276
Monitored data..................................................................... 280
Technical data...................................................................... 281
Technical revision history..................................................... 282
Directional three-independent-phase directional overcurrent
protection DPH3xPDOC............................................................ 282
Identification......................................................................... 282
Function block...................................................................... 283
Functionality......................................................................... 283
Operation principle .............................................................. 283
Timer characteristics............................................................ 290
Directional overcurrent characteristics ................................ 291
Application............................................................................299
Signals..................................................................................301
Settings................................................................................ 303
Monitored data..................................................................... 306
Technical data...................................................................... 308
Three-phase voltage-dependent overcurrent protection
PHPVOC................................................................................... 308
Identification......................................................................... 308
Function block...................................................................... 309
Functionality......................................................................... 309
Operation principle............................................................... 309
Application............................................................................314
Signals..................................................................................315
Settings................................................................................ 316
Monitored data..................................................................... 317
Technical data...................................................................... 318
Three-phase thermal protection for feeders, cables and
distribution transformers T1PTTR............................................. 318
Identification......................................................................... 318
Function block...................................................................... 318
Functionality......................................................................... 319
Table of contents
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