Busbar Arrangement

Busbar Arrangement./Different types of Busbar Arrangement.

An electrical bus bar is defined as a conductor or a group of conductors used for collecting electric power from the incoming feeders and distributes them to the outgoing feeders. In other words, it is a type of electrical junction in which all the incoming and outgoing electrical current meets. Thus, the electrical bus bar collects the electric power at one location.

Bus bar Arrangement in a Substation 

The bus bar system consists of the isolator and the circuit breaker. On the occurrence of a fault, the circuit breaker is tripped off and the faulty section of the busbar is easily disconnected from the circuit.

There are many different electrical bus system schemes available but the selection of a particular scheme depends upon the system voltage, the position of a substation in an electrical power system, flexibility needed in system and cost to be expensed.

The Main Criteria to be considered during the Selection of one Particular Bus – Bar arrangement Scheme among others

1. The simplicity of the system.
2. Easy maintenance of different equipment.
3. Minimizing the outage during maintenance.
4. Future provision of extension with the growth of demand.
5. Optimizing the selection of bus bar arrangement scheme so that it gives maximum return from the system.

Types of Busbar Arrangement 

1. Single Bus Single Breaker
2. Single Bus System with Bus Sectionalizer
3. Double Bus Single Breaker
4. Double Breaker Bus System
5. One and A Half Breaker Bus System
6. Main and Transfer Bus System
7. Double Bus System with Bypass Isolators