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How anti pumping relay operate in Evolis breaker (12P1-630) ?
kindly be informed the anti-pumping function is achieved in EVOLIS circuit breaker mechanically and combined with the closing coil so that in case of closing order, when the CB is already closed, nothing happens. In case of closing order is maintained, in case of an opening order , the CB opens, and when the opening order disappear the CB stay opened.

In conclusion, closing order must be released and put again to close again the CB
If the opening order is maintained, the CB stay opened.

The closing & tripping coils have to be permanently supplied to do the anti pumping function properly.

You'll find attached a presentation explaining how does it works

Schneider Electric Egypt and North East Africa

Attachment(s)
Evo17.5_mechanical anti pumping.7z [231.96 KB]
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