ABB RED650 Technical Manual page 11

Line differential protection RED650 2.2 IEC
Technical manual
Four residual overcurrent steps............................................195
Directional supervision element with integrated
directional comparison function............................................197
Second harmonic blocking element..................................... 199
Switch on to fault feature......................................................201
Technical data........................................................................... 203
Thermal overload protection, one time constant, Celsius/
Fahrenheit LCPTTR/LFPTTR.........................................................204
Identification.............................................................................. 204
Functionality.............................................................................. 204
Function block........................................................................... 205
Signals.......................................................................................205
Settings......................................................................................206
Monitored data...........................................................................208
Operation principle.................................................................... 208
Technical data........................................................................... 212
Breaker failure protection CCRBRF............................................... 212
Identification.............................................................................. 212
Functionality.............................................................................. 212
Function block........................................................................... 213
Signals.......................................................................................213
Settings......................................................................................214
Monitored data...........................................................................215
Operation principle.................................................................... 215
Technical data........................................................................... 218
Pole discordance protection CCPDSC........................................... 219
Identification.............................................................................. 219
Functionality.............................................................................. 219
Function block........................................................................... 220
Signals.......................................................................................220
Settings......................................................................................221
Monitored data...........................................................................221
Operation principle.................................................................... 221
Pole discordance signaling from circuit breaker...................224
Unsymmetrical current detection..........................................224
Technical data........................................................................... 225
Section 9 Voltage protection........................................................ 227
Two step undervoltage protection UV2PTUV ................................227
Identification.............................................................................. 227
Functionality.............................................................................. 227
Function block........................................................................... 228
Signals.......................................................................................228
Settings......................................................................................229
Table of contents
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