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what is the meaning of Ring Mean Unit in a substation or
trasformer also tell me its oerpuse?

Answer Posted / hesham

RMU IS used to feed the transformer from two different feeders within ring
1- TRM ( two incomer and one outgoing feeding only one transformer 2+1 )
Or ( 1+2 ) one incomer and two outgoing feeding two S/S.

2- QRM ( 2+2 ) two incomer and two outgoing feeding two transformer
or ( 1+3 ) one incomer and three outgoing feeding three s/s.

Is This Answer Correct ?    19 Yes 5 No



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