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Double Bus and Double Breakers scheme.


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In this scheme, the double breaker is used in each circuit and each circuit is connected to both busbar i.e busbar-1 & busbar – 2. Although such a scheme is very costly, yet it affords the best maintenance facilities for the circuit breakers.Thus, when one of the circuit breakers is being opened for repairs and usual checks, the load can be shifted on the other circuit breaker easily.



Advantage:

  • It has the maximum flexibility and reliability. Any fault and maintenance of one circuit breaker, power can be feed easily through another circuit breaker.
  • Disadvantage:

    1. It is the costliest bus arrangement.
    2. Maintenance costs are high as compare to other bus bar arrangement.


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