RMU Yard

RMU Yard:-

RMU stands for ring main unit. it consists different equipment in this yard are given below

SF6 Circuit Breaker
Metering Cubicle
HV Vacuum Circuit

SF6 Circuit Breaker:- it this we having two 11 kv/ 66 kv incoming feeders by using SF6 CB any one feeder has been selected

SF6 Circuit Breaker

Metering Cubicle:- it consists CT (current Transformer) & PT (potential Transformer). by suing this cubicle we can measure the KWH, KVAH, UC KVA (unit's consumption kva), PF, KVA and KWAH
by using UC KVA we can see also the how much demand we are reaching per day

Metering Cubicle

Types Of Faults Occurred in RMU Yard:-

• Insulator:- An insulator is a material that dose not conduct electrical current insulating materials include paper, plastic, Rubber, Glass and Air. Vacuum is also an insulator, but is not actually  a materiel. most electrical conductors are covered by insulation.

Insulator

• PT:- Potential transformer is a voltage step-down transformer which reduces the voltage of a high voltage circuit to a lower level for the purpose of measurement. these are connected across or parallel to the line which is to be monitored... in common, the potential transformer are abbreviated as PT

Potential Transformer

• CT:- A current transformer (CT) is a type of transformer that is used to reduce or multiply an alternating current (AC). it produces a current in its secondary which is proportional to the current in its primary. current transformer, along with voltage or potential transformer, are instrument transformers.

Current Transformer

• Busbar:- In electrical power distribution, a busbar is a metallic strip or bar, typically housed inside switchgare, panel boards, and busway enclosures for local high current power distribution. they are also used to connect high voltage equipment at electrical switchyards, and low voltage equipment in battery banks.

Busbar