what is an rmu?its circuit diagram.functions
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Answer / vishnu g pillai
A ring main can be defined as an electrical supply serving a series of consumers that returns to the original source, so that each consumer has an alternative path in the event of a failure. It's also an arrangement of pipes forming a closed loop into which water, steam or sewage may be fed and whose points of draw-off are supplied by flow from two directions.
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Answer / satish
Ring main unit is to be used in CSS(11kva or 33kva) or PSS. it consists of three circuit breakers either it is vcb or depends upon design.it has a three ways one is for incoming remain two for outgoing.in this the connection of incoming and outgoing based upon the CT ratio.for selecting of CT'S is depends upon knee point voltage.
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Answer / wana
Ring Main Unit is a SF6 insulated compact switchgear.Rated voltage 12/24 KV to 33 KV ( SafeRing/SafePlus). Can supplied with an integral remote control and monitoring unit.
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