ABB REG650 - Page 10

Technical data........................................................................... 137
Section 7 Impedance protection...................................................139
Power swing detection ZMRPSB ...................................................139
Identification.............................................................................. 139
Functionality.............................................................................. 139
Function block........................................................................... 139
Signals.......................................................................................140
Settings......................................................................................140
Operation principle.................................................................... 141
Resistive reach in forward direction..................................... 142
Resistive reach in reverse direction..................................... 143
Reactive reach in forward and reverse direction.................. 144
Basic detection logic.............................................................144
Operating and inhibit conditions........................................... 146
Technical data........................................................................... 146
Underimpedance protection for generators and transformers
ZGCPDIS........................................................................................146
Identification.............................................................................. 146
Functionality.............................................................................. 147
Function block........................................................................... 147
Signals.......................................................................................148
Settings......................................................................................148
Operation principle.................................................................... 149
Full scheme measurement................................................... 149
Impedance characteristic..................................................... 149
Basic operation characteristics.............................................150
Theory of operation.............................................................. 151
Technical data........................................................................... 153
Loss of excitation LEXPDIS............................................................153
Identification.............................................................................. 153
Functionality.............................................................................. 153
Function block........................................................................... 154
Signals.......................................................................................154
Settings......................................................................................155
Monitored data...........................................................................156
Operation principle.................................................................... 156
Technical data........................................................................... 160
Out-of-step protection OOSPPAM..................................................160
Identification.............................................................................. 160
Functionality.............................................................................. 160
Function block........................................................................... 161
Signals.......................................................................................161
Settings......................................................................................162
Table of contents
4
Technical manual