48
Load Break Switch Control
ERT-200S
[Fig. 6-9] Phase diagram of SEF
6.5.
Role of the Sectionalizer(Auto Sectionalizing)
The Load Break Switch (LBS) is equipped with automatic sectionalizing logic. The sectionalizing logic
opens the LBS during the dead time of an upstream Recloser after it has tripped and closed a number
of times as configured by the user.
It’s the function to open LBS and disconnect the faulty section from the distribution Feeder automatically
before the Recloser or reclosing relay of CB lockouts. The condition to open automatically is the fault
count. FTU detects and counts the fault and opens LBS if the count reaches the setting value. The default
count setting is two. It means that FTU allows the 1st reclosing success of the upstream Recloser or
reclosing relay of CB without sectionalizing in case of temporary fault.
[Fig. 6-10] Typical time sequence of sectionalizing
Caution:
Pay attention to the sectionalizer setting according to the Operation Open Time and Recloser
setting of Mechanism.
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...
