Answer / rajiniganth

RING MAIN UNIT

Answer / sivakumar

RING MAIN UNIT IS A 11 KV OR 33 KV HT PANEL HAVING 3
BREAKERS THAT IS 2 FOR INCOMING ONE FOR OUT GOING. IT
ENABLES CONSUMER USE 2 SOURCES OF HT POWER IN A THE SAME
METERING POINT i. e RMU.

Answer / santosh

If there are two nos of ht power we have used to ring main
unit panel. In case of power failer from one source we can
take power from another source at the same point.

Answer / khalid mahmood

RMU IS A DISTRIBUTION SUBSTATION.IT PROVIDES MEDIUM VOLTAGE
POWER SUPPLY 11KV 13.8KV 22KV 33KVS.TWO CIRCUITS PROVIDED
FOR FEEDIND ALTERNATIVELY & ONE FOR TO FEED THE TRANSFORMER
EQUIPED WITH OVER CURRENT AS WELL AS EARTH FAULT PROTECTION
RELAYS TO PROTECT THE TRANSFORMER.I HIGHLY RECMEND THAT TWO
FEEDERS SHOULD BE INTERLOCKED TO AVOID THE OPERATION
SIMELTANEOUSLY.

Answer / zafir alam

Ring Main Unit used in high voltage Distribution
System.There's flexibility in the supply in this system.

Answer / dixit

RMU is a panel generally forms ring system in which distributor is supplied from more than 1 feeders as input to RMU so that in case of failure from any one feeder ,power can be fed uninterruptedly from another feeders at the same point.
Now a days it is of SF6 gas insulated type.

Answer / ramandeep

used for two input of ht and one out put for ht ..
used for given the supply at same time .when one supply
will be fail ....& most important is we have to provide
interlocking between two incomer so that at a time only one
incomer can be ON . other it may short circuit

Answer / santosh bansal

Ring Main Unit
used for two input of ht and one out put for ht ..
or same one input and two out put ....
used for given the supply at same time .when one supply
will be fail ....

Answer / khalid mahmood janjua

RING MAIN UNIT IS TO BE USED TWO INCOMMING AND ONE OUT GOING GENERALLY BUT SOME TIMES ONE INCOMMING AND TWO OUT GOINGS MEDIUM VOLTAGE SUPPLIES.IN ENGINEERING DISTRIBUTION THIS IS CALLED FLEXIBLE POWER SUPPLY.NO A DAY SF6 CIRCUIT BREAKERS GOING TO BE USED.THESE ARE MAINTENANCE FREE BREAKERS.REMEMBER THAT SOLID WITH EPOXY RESIN CAST ALSO USED THOSE ARE NOT LATEST BUT ARE COMPATIBLE TO INTERNAL STANDARDS.

Answer / jitendra patil

what is interlock in rmu (sf6breaker) bitween two or three isolator?

what is transformer tap change HT side and LT side

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