DOUBLE BUSBAR AND DOUBLE WITH SECTIONALISATION

DOUBLE BUSBAR

AND

DOUBLE BUSBAR WITH SECTIONALISATION

DOUBLE BUSBAR :

This system consists of two bus bars, one main bus bar and another auxiliary bus bar. The incoming and outgoing lines are connected to the two bus bars through circuit breaker and isolator. At normal condition, the incoming and outgoing lines are connected to the Main bus bar, and the auxiliary bus bar is kept as reserve bus bar. In case of repair or maintenance of main bus bar, the continuity of supply to the circuit can be maintained by transferring the circuit to the auxiliary bus bar.

ADVANTAGES :

1. In case of any fault on one of the bus bars, the continiuty of supply can be maintained by transferring the circuit to the healthy bus bar.

2.Maintenance work can be easily carried out.

DISADVANTAGES :

1. Capital cost for the busbar arrangement is more.

2. Maintenance costs are high.

BUSBAR WITH SECTIONALISATION :

In this scheme auxiliary bus bars are used with the sectionalised main bus bar. In this method of connection, any section of the bus bar can be isolated for maintenance work. It will be noted that the auxiliary bus bar is not sectionalised because this is not necessary and is expensive.

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