ABB Relion 650 Series REB650 Technical Manual page 10

Table of contents
4
Signals.......................................................................................119
Settings......................................................................................119
Monitored data...........................................................................120
Operation principle.................................................................... 120
Pole discordance signaling from circuit breaker...................121
Unsymmetrical current detection..........................................121
Technical data........................................................................... 122
Negative sequence based overcurrent function DNSPTOC ..........122
Identification.............................................................................. 122
Functionality.............................................................................. 123
Function block........................................................................... 123
Signals.......................................................................................123
Settings......................................................................................124
Monitored data...........................................................................125
Operation principle.................................................................... 125
Technical data........................................................................... 126
Section 8 Voltage protection........................................................ 127
Two step undervoltage protection UV2PTUV ................................127
Identification.............................................................................. 127
Functionality.............................................................................. 127
Function block........................................................................... 127
Signals.......................................................................................128
Settings......................................................................................128
Monitored data...........................................................................129
Operation principle.................................................................... 129
Measurement principle......................................................... 130
Time delay............................................................................130
Blocking................................................................................131
Design.................................................................................. 131
Technical data........................................................................... 132
Two step overvoltage protection OV2PTOV ..................................133
Identification.............................................................................. 133
Functionality.............................................................................. 133
Function block........................................................................... 134
Signals.......................................................................................134
Settings......................................................................................135
Monitored data...........................................................................135
Operation principle.................................................................... 136
Measurement principle......................................................... 136
Time delay............................................................................137
Blocking................................................................................138
Design.................................................................................. 138
Technical data........................................................................... 140
Technical manual