An electrical busbar consists of a metallic conductor in a shape like a bar or a strip enclosed in switch gear, panel boards, and busway enclosures. Electrical power is collected from input feeders and distributed to output feeders by conductors or groups of conductors.
In other words, it is a typed splice that connects all the inbound and outbound electrical currents. In this way, the electric busbar collects electrical energy in place.
The busbar system consists of the isolator and the circuit breaker.
Busbars are available in a variety of shapes and sizes. Rectangular, tubular, round, and many other shapes. A rectangular is mainly used in power systems.
Copper, aluminum, and brass are used for the manufacture of the electrical bus bar.
Importance of Busbar
There are several types of busbar arrangements used in power systems. There are many factors to consider when selecting a busbar, such as reliability, flexibility, and cost. In selecting a particular busbar arrangement, the following factors should be considered.
The busbar layout is simple and easy to maintain.
System maintenance did not affect its continuity.
Busbar installation is economical.
A single busbar is used in the case of small substations, where continuity of supply is not critical. But in the large substations, an additional bus bar is used in the system to avoid interruption in the supply.