ABB RELION 620 Series Technical Manual page 17

620 series
Technical Manual
Function block...................................................................... 341
Functionality......................................................................... 342
Operation principle............................................................... 342
Application............................................................................343
Signals..................................................................................344
Settings................................................................................ 344
Monitored data..................................................................... 345
Technical data...................................................................... 345
Thermal overload protection for motors MPTTR....................... 345
Identification......................................................................... 345
Function block...................................................................... 345
Functionality......................................................................... 346
Operation principle............................................................... 346
Application............................................................................354
Signals..................................................................................358
Settings................................................................................ 359
Monitored data..................................................................... 360
Technical data...................................................................... 360
Technical revision history..................................................... 360
Earth-fault protection...................................................................... 361
Non-directional earth-fault protection EFxPTOC....................... 361
Identification......................................................................... 361
Function block...................................................................... 361
Functionality......................................................................... 361
Operation principle............................................................... 362
Measurement modes............................................................363
Timer characteristics............................................................ 364
Application............................................................................365
Signals..................................................................................366
Settings................................................................................ 367
Monitored data..................................................................... 369
Technical data...................................................................... 370
Technical revision history..................................................... 371
Directional earth-fault protection DEFxPDEF............................ 372
Identification......................................................................... 372
Function block...................................................................... 372
Functionality......................................................................... 372
Operation principle............................................................... 373
Directional earth-fault principles........................................... 378
Measurement modes............................................................384
Timer characteristics............................................................ 385
Directional earth-fault characteristics................................... 386
Application............................................................................394
Table of contents
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