ABB Relion 650 Series REB650 Technical Manual page 9

Technical manual
Operation principle...................................................................... 83
Second harmonic blocking element.............................................87
Technical data............................................................................. 88
Four step residual overcurrent protection, zero, negative
sequence direction EF4PTOC .........................................................88
Identification ............................................................................... 88
Functionality................................................................................ 89
Function block............................................................................. 89
Signals.........................................................................................90
Settings........................................................................................91
Monitored data.............................................................................93
Operation principle...................................................................... 93
Operating quantity within the function.................................... 94
Internal polarizing................................................................... 95
External polarizing for earth-fault function..............................97
Base quantities within the protection......................................98
Internal earth-fault protection structure.................................. 98
Four residual overcurrent steps..............................................98
Directional supervision element with integrated
directional comparison function..............................................99
Second harmonic blocking element...........................................103
Technical data........................................................................... 104
Thermal overload protection, two time constants TRPTTR ........... 105
Identification ............................................................................. 105
Functionality.............................................................................. 105
Function block........................................................................... 106
Signals.......................................................................................106
Settings......................................................................................107
Monitored data...........................................................................108
Operation principle.................................................................... 108
Technical data........................................................................... 112
Breaker failure protection 3-phase activation and output CCRBRF 112
Identification.............................................................................. 112
Functionality.............................................................................. 112
Function block........................................................................... 113
Signals.......................................................................................113
Settings......................................................................................114
Monitored data...........................................................................114
Operation principle.................................................................... 115
Technical data........................................................................... 117
Pole discordance protection CCRPLD .......................................... 118
Identification ............................................................................. 118
Functionality.............................................................................. 118
Function block........................................................................... 118
Table of contents
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