Double Breaker Double Bus. Mcgraw hill dictionary of scientific technical terms 6e. A double breaker is basically an interconnected set of two single pole breakers.
You ll also hear them called duplex slimline. This scheme is typically found in ehv transmission substations or generating stations. How does 2 pole circuit breaker work.
In double breaker bus bar system two identical bus bars are used in such a way that any outgoing or incoming feeder can be taken from any of the bus similar to double bus bar system.
Connected between the main buses are bays consisting of two circuit breakers and between the circuit breakers a circuit. Electrically connected between the buses are two circuit breakers and between the breakers one circuit as diagrammed in figure 8. In double bus single breaker scheme two buses bus i and bus ii are used to supply feeders. A schematic diagram of double bus single breaker scheme is shown in figure below.
