![]() Transfer Bus Side Isolator: In an electrical system for reliability main or transfer bus is used.A feeder is a line that carries power from the Substation to the distribution system. Lineside Isolator: These are connected between the line and any feeder.Whenever there is a need for repair or replacement of any bus, they are operated. Bus Side Isolator: These are connected to the main buses in the substation.So, the isolator on both sides of the circuit breaker allows essential replacement and services requirements to be performed safely. Isolators are generally used on both sides of the circuit breaker, this measure is taken just to ensure extra safety and protection because in a power system incoming and outgoing lines can have multiple sources of power, and disconnecting one side is sometimes not enough. Horizontal double break isolator in substations use is abundant. It is designed in small compact cases so that it can be used in domestic scale wiring systems. Miniature circuit breaker (MCB) as apparent from the name is designed for low power requirements such as homes and offices. This type of pantograph isolator is widely used in electric trains to obtain electricity from overhead transmission lines. In a pantograph type isolator, both terminals at each side connect and disconnect only because of the forces of stress or tension, and usually is no locking mechanism. In a single break isolator, only one terminal connects and disconnects whereas in a double break isolator both terminals at each side connect and disconnect because the central terminal is moveable. Lineside isolator: It is generally located at the line side of the feeder. ![]()
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