Main and transfer busbar system

Main And Transfer Busbar System. Main and Transfer Bus Arrangement. The busbar arrangement uses bus coupler which connects the isolating switches and circuit breaker to the busbar. The main conception of Main and Transfer Bus System is here every feeder line is directly connected through an isolator to a second bus called transfer bus. While transferring the load to reserve bus.

The main conception of Main and Transfer Bus System is here every feeder line is directly connected through an isolator to a second bus called transfer bus. Each generator and feeder may be connected to either bus-bar with the help of bus coupler which consists of a circuit breaker and isolating switches. When the loads exceed the bus bar capacity then some of the load will be transferred to the transfer bus. It does the connection of incoming and outgoing transmission lines. The said isolator in between transfer bus and feeder line is generally called bypass isolator. Main and transfer bus bar This arrangement comprises a main bus that is used under ordinary conditions and a transformer bus for emergency purposes.

But it provided no facility for breaker maintenance without interrupting power supply to the concerned circuit.

Rather than branching from the main supply at one location they allow new circuits to branch off anywhere along the route of the busway. The main conception of Main and Transfer Bus System is here every feeder line is directly connected through an isolator to a second bus called transfer bus. Close isolators on the reserve bus. The advantage and disadvantage of single busbar system are given below. This is an alternative of a double bus system. This means there will be two relays of preferably two different make to protect the same zone.