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Answer Posted / nagarajan
Ring main units not only used for High voltage,for LV
distribution purpose also it is being used.during the
operating of RMU back feedings possibilities are ther so we
must ensure after the isolation because two individual
power sources are connected to the RMU. So first isolate
both the source and make earth main circuit.Discharge if it
is high voltage side.Put lock out and tags caution lables
on the both the sources.
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