Double busbar systems offer several benefits over traditional single busbar systems, including improved reliability and availability of power supply, reduced risk of power outages and equipment failures, increased flexibility and scalability of power distribution systems, and. Double busbar systems offer several benefits over traditional single busbar systems, including improved reliability and availability of power supply, reduced risk of power outages and equipment failures, increased flexibility and scalability of power distribution systems, and. Advantages and Disadvantages of Double-Busbar Configuration in Substations A substation with double-busbar configuration employs two sets of busbars. Each power source and each outgoing line is connected to both busbars via one circuit breaker and two disconnectors, allowing either busbar to serve. There are two main types — single-bus and double-busbar switchgear. The choice between them affects cost, reliability, and how easy it is to maintain or expand the system. What Is Single-Busbar. A busbar is a metallic strip or bar (usually made of copper or aluminum) used for conducting electricity within a switchboard, distribution board, substation, or other electrical apparatus. It distributes the power to various. Three-phase power with currents of up to 5 Amps per phase can be carried, measured and switched by means of the double busbar model.