Answer Posted / pravesh mishra
rmu is ring main unit ,it is used in 11 kv under ground.the two 630 ampr.load break isolator the rmu shall be connected to the incoming and out going ends of the 11 kv ring system for the control of the 11kv ring distribution systenm .the 630amp.sf6 breaker of the rmu shall be connected to control ,protect and isolator the 11kv/433v didtribution x-former / ht consumers/connected through 11kv bunderground cable
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