Ans : The different types of busbar arrangements are as following :-
a) Single busbar system in which the generators or incoming feeders outgoing lines and transformers are connected to the busbar, and it is used in small outdoor substation.
b) Single busbar with sectionalisation in which the busbar is sectionalized by means of a circuit breaker with both end isolators and it is used in the large generating station where several units are installed.
c) Duplicate busbar system in which two busbars, a ‘main’ busbar and a ‘spare’ busbar are used for the benefit of maintenance work without interrupting the supply and it is used in the large important substation.
d) Ring busbar arrangement in which all the sectionalized buses are connected in a ring to receive supply from any adjacent section.
e) Mesh busbar arrangement in which the circuit breakers are arranged in the mesh formation by the buses so that the number of circuit breakers needed will be exactly half the feeders to be controlled.
f) One and a half breaker arrangement in which three circuit breakers are needed for controlling two circuits.