ABB Relion 650 Series REB650 Technical Manual page 11

Technical manual
Two step residual overvoltage protection ROV2PTOV ................. 140
Identification.............................................................................. 140
Functionality.............................................................................. 140
Function block........................................................................... 141
Signals.......................................................................................141
Settings......................................................................................141
Monitored data...........................................................................142
Operation principle.................................................................... 142
Measurement principle......................................................... 143
Time delay............................................................................143
Blocking................................................................................143
Design.................................................................................. 143
Technical data........................................................................... 145
Section 9 Secondary system supervision.....................................147
Fuse failure supervision SDDRFUF............................................... 147
Identification.............................................................................. 147
Functionality.............................................................................. 147
Function block........................................................................... 148
Signals.......................................................................................148
Settings......................................................................................149
Monitored data...........................................................................150
Operation principle.................................................................... 150
Zero and negative sequence detection................................ 150
Delta current and delta voltage detection.............................151
Dead line detection...............................................................154
Main logic............................................................................. 154
Technical data........................................................................... 158
Breaker close/trip circuit monitoring TCSSCBR............................. 158
Identification.............................................................................. 158
Functionality.............................................................................. 158
Function block........................................................................... 158
Signals.......................................................................................159
Settings......................................................................................159
Operation principle.................................................................... 159
Technical data........................................................................... 160
Section 10 Control..........................................................................161
Synchrocheck, energizing check, and synchronizing SESRSYN...161
Identification.............................................................................. 161
Functionality.............................................................................. 161
Function block........................................................................... 162
Signals.......................................................................................162
Settings......................................................................................164
Table of contents
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