The reclaim time must be long enough to allow the protection
relays to operate when the circuit breaker is reclosed on to a
permanent fault. The most common forms of protection
applied to HV lines are I.D.M.T. or definite time over-current
and earth-fault relays. The maximum operating time for the
former with very low fault levels could be up to 30 seconds,
while for fault levels of several times rating the operating time
may be 10 seconds or less.
đang được dịch, vui lòng đợi..
![](//viimg.ilovetranslation.com/pic/loading_3.gif?v=b9814dd30c1d7c59_8619)