Why do we need ring main unit (RMU). what is its purpose and its advantages . what is the operating function of rmu
Answers were Sorted based on User's Feedback
Usually a RMU is used to allow a feed of supply from 2
directions and tapping of to a transformer, etc.
Each of these supplies may have a number of RMU's in series
forming a ring. If a section of the feeder needs to be
isolated due to work or failure an RMU on each end of this
section can be opened without stopping any supply.
Is This Answer Correct ? | 28 Yes | 4 No |
Answer / ramgopal gupta
two purposes 1.reduce voltage drop.2.increse the supply
reliability when fault occurs.
Is This Answer Correct ? | 28 Yes | 6 No |
Answer / sanjeev kumat
need of RMU is to provide the uninteruptted power supply .
purpose of rmu is to make a ring of power supply network so that supply can be feed from 2nd source on failure of 1st source of power supply .
operating function of RMU (RING MAIN UNIT ) switchgear are closing , opening and to do earth to the ckt. .the funtion of rmu are very easily to operate . it consist mechanically interlocking and sealed tank containing sf6 gas . and provide very good factor of safety .
Is This Answer Correct ? | 11 Yes | 1 No |
Answer / al mahmoodi
In addition the easiest way to make feeder sectional when cable fault occurs and arranged power supply backfeed
Is This Answer Correct ? | 2 Yes | 1 No |
Answer / chokkalingam
RMU-Ring Main Unit has multiple power source which can switched "ON" alternatively. whenever there is a fault/break down in one circuit by the other source of power supply
Is This Answer Correct ? | 1 Yes | 0 No |
Answer / kamal
1 when RMU connected to SCADA system we can detect line fault on the office room
2 AB Switch operation removed by RMU
RMU is nothing but AB Switch in simple word
Is This Answer Correct ? | 1 Yes | 1 No |
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