ABB RED615 Technical Manual page 15

615 series
Technical Manual
Application............................................................................330
Signals..................................................................................334
Settings................................................................................335
Monitored data.....................................................................336
Technical data......................................................................336
Harmonic based earth-fault protection HAEFPTOC..................336
Identification.........................................................................336
Function block......................................................................337
HAEFPTOC functionality......................................................337
Operation principle...............................................................337
Application............................................................................341
Signals..................................................................................342
Settings................................................................................343
Monitored data.....................................................................344
Technical data......................................................................344
Differential protection......................................................................345
Line differential protection and related measurements,
stabilized and instantaneous stages LNPLDF...........................345
Identification.........................................................................345
Function block......................................................................345
Functionality.........................................................................345
Operation principle...............................................................346
Commissioning.....................................................................367
Application............................................................................373
Signals..................................................................................379
Settings................................................................................380
Monitored Data.....................................................................382
Technical data......................................................................383
Technical revision history.....................................................383
Stabilized and instantaneous differential protection for 2W-
transformers TR2PTDF.............................................................383
Identification.........................................................................383
Function block......................................................................384
Functionality.........................................................................384
Operation principle...............................................................384
Application............................................................................397
CT connections and transformation ratio correction.............413
Signals..................................................................................417
Settings................................................................................418
Monitored data.....................................................................420
Technical data......................................................................422
Numerically stabilized low-impedance restricted earth-fault
protection LREFPNDF...............................................................422
Identification.........................................................................422
Table of contents
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