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Load Break Switch Control
ERT-200S
Sectionalizer works normally during Recloser Reclosing time
Incorrect example: Recloser Reclosing Time shorter than LBS operation time.
In this case, the LBS cuts off the fault current, which can cause a serious problem.
Note) After Sectionalizer Trip operation, FI Reset must be done for "close" operation.
6.6.
Phase Loss Detection
It’s the definite time under
-voltage function only when at least one phase has normal voltage. It has
hysteresis characteristics. Voltage On level, Off level, and Delay time settings are needed for this function.
6.7.
Phase Sync. Check
ERT-200Smonitors the phase angle difference between source and load side voltages of LBS. If the angle
difference is larger than the setting and maintains longer than the set time, an alarm is generated. The
alarm is useful to close LBS which is installed at the tie point of two feeders from the separated substation.
FTU doesn’t include the result of sync. Check in the close interlock conditions. Be cautious of closing tie
switch.
Summary of Contents for ERT-200S
Page 1: ...Feeder Remote terminal Unit ERT 200S Manual www powersys kr...
Page 13: ...13 Load Break Switch Control ERT 200S 2 5 Function BlockDiagram...
Page 38: ...38 Load Break Switch Control ERT 200S 5 3 3 Menu structure tree Figure Menu Tree Structure...
Page 42: ...42 Load Break Switch Control ERT 200S...
Page 96: ...Appendix 1 Drawings 1 Enclosure Control Cabinet...
