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Inrush current detection function (ICD).................................................................................... 127
Operation and characteristic ............................................................................................... 128
2.10.1
Scheme logic ......................................................................................................................... 128
2.10.2
Setting ................................................................................................................................... 129
2.10.3
Signal .................................................................................................................................... 129
2.10.4
Cold load protection (CLP) ......................................................................................................... 130
Scheme logic ......................................................................................................................... 131
2.11.1
Setting ................................................................................................................................... 133
2.11.2
Signal .................................................................................................................................... 133
2.11.3
Circuit breaker fail protection (CBF) ......................................................................................... 134
CBF operation and its elements ......................................................................................... 135
2.12.1
Re-trip feature ...................................................................................................................... 135
2.12.2
Backup feature ..................................................................................................................... 136
2.12.3
Scheme logic ......................................................................................................................... 137
2.12.4
Operation timing .................................................................................................................. 139
2.12.5
Setting ................................................................................................................................... 140
2.12.6
Signal .................................................................................................................................... 141
2.12.7
Under-voltage protection for phase-to-natural (UV) ................................................................ 142
Drop-off and pick-up characteristic .................................................................................... 143
2.13.1
Time characteristic .............................................................................................................. 143
2.13.2
Miscellaneous functions ....................................................................................................... 145
2.13.3
Scheme logic ......................................................................................................................... 146
2.13.4
Setting ................................................................................................................................... 149
2.13.5
Signal .................................................................................................................................... 151
2.13.6
Phase-to-phase under-voltage protection (UVS) ....................................................................... 154
Drop-off and pick-up characteristic .................................................................................... 155
2.14.1
Time characteristic .............................................................................................................. 155
2.14.2
Miscellaneous functions ....................................................................................................... 157
2.14.3
Scheme logic ......................................................................................................................... 158
2.14.4
Setting ................................................................................................................................... 161
2.14.5
Signal .................................................................................................................................... 163
2.14.6
Overvoltage protection for phase-to-neutral (OV) .................................................................... 166
Drop-off and pickup characteristic ..................................................................................... 167
2.15.1
Delay for the operation of the OV element ........................................................................ 167
2.15.2
Time characteristic .............................................................................................................. 167
2.15.3
Miscellaneous functions ....................................................................................................... 169
2.15.4
Scheme logic ......................................................................................................................... 170
2.15.5
Setting ................................................................................................................................... 172
2.15.6
Signal .................................................................................................................................... 174
2.15.7
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6F2T0207 (0.01)
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