WHAT IS RMU AND WHAT IS ITS FUNCTION AND HOW TODISCONNECT

Answer Posted / asif.k64@gmail.com

Ring mains unit - RMU mainly used to provide dual supply to
a building, in case one supply fails building can be fed
through a stand by supply, change over usually happens
automatically.
It usually is on the HT side, and consist of a dry type of
transformer and protection system, In order to disconnect it
you should first close the incomer of HT breaker through
which RMU is fed.

Wait it's not over yet, you should ground the Incomer and
outgoing terminal of RMU to insure safety.

Is This Answer Correct ?    11 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

What should be the values of settling time, peak time, steady state error, overshoot, rise time, MPOS (Maximum percent over shoot) to keep the system in transient state, to keep the system in steady state ?

1769


WHAT IS MEANING OF Gg & Gg IN hrc FUSE

2846


Why front mounted CT polarities are always towards breaker?

1526


how to calculate the earth mat design in 132 kv substation yard ????

5726


How to connect the chemical earthing and complete process tell me plz

1395






hello if any one have papers vof hpcl or sail, plz send me

1433


What will happen if i used 11KV earth ht kit to 11 KV / 11 KV cable termination?

996


Distinguish between nuclear power station with thermal power station for initial cost, starting period, cleanliness, and transportation of fuel

1534


I am getting above 60 V as open delta voltage against single phase unit ICT at tertiary delta formed and ICT getting trippped on NDR. ICT tested and found in order. PTs provided on tertiary are tested and in order. what may be the reason?

1421


What effect does a very low impedance have on the Voltage regulation? On the short-circuit current?

5834


what is the problem when i want to close a circuit breaker by local position it closes well.but when i close it in remote position it trips

1087


what are the available sizes of pin type terminal lugs in the market today?

1422


When we use 3 terminal resistor?

633


Please brief me about number of pole in alternator.In single phase alternator coils are connected in star or series. How to calculate frequency for the same.

1425


by what factor the starting current is used when comparing star and delta connection for motor starting?

1586