LV generator protection - engineering site - Schneider Electric
LV generator protection - engineering site - Schneider Electric
LV generator protection - engineering site - Schneider Electric
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E79360E<strong>Electric</strong>al utilityHV incomerNCMains 1feederMains 2feederNon-sensitiveloadUninterruptiblepower supplySensitive feedersNC: normally closed.NO: normally open.Figure 6: Replacement GS and UPS.Note: for very sensitive applications, should the UPS stop, the operator can asknot to be switched to the MS in operation on Generator Set. In this case the MS isreplaced by a redundant UPS.This system is naturally compulsory if frequency of the upstream (source) anddownstream (application) networks is different (for example source in 50 Hz,application in 60 Hz).9