ABB REF615 Applications Manual page 9

REF615
Application Manual
Applications.................................................................................93
Functions.....................................................................................93
Default I/O connections..........................................................95
Functional diagrams....................................................................96
Functional diagrams for protection.........................................96
Functional diagram for disturbance recorder and trip
circuit supervision.................................................................102
Functional diagrams for control and interlocking..................104
Section 4 Basic functions.............................................................111
General parameters........................................................................111
Self-supervision..............................................................................126
Internal faults.............................................................................127
Warnings...................................................................................128
Time synchronization......................................................................129
Parameter setting groups...............................................................130
Section 5 Protection functions......................................................133
Three-phase current protection......................................................133
Three-phase non-directional overcurrent protection
PHxPTOC..................................................................................133
Identification.........................................................................133
Functionality.........................................................................133
Application............................................................................133
Three-phase directional overcurrent protection
DPHxPDOC...............................................................................140
Identification.........................................................................140
Functionality.........................................................................140
Application............................................................................140
Three-phase thermal overload protection for overhead lines
and cables T1PTTR...................................................................143
Identification.........................................................................143
Functionality.........................................................................143
Application............................................................................144
Earth-fault protection......................................................................145
Non-directional earth-fault protection EFxPTOC.......................145
Identification.........................................................................145
Functionality.........................................................................145
Application............................................................................145
Directional earth-fault protection DEFxPDEF............................146
Identification.........................................................................146
Functionality.........................................................................146
Directional earth-fault principles...........................................146
Application............................................................................152
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