What is the main purpose of bus coupler?
Bus coupler is a device which is used to couple one bus to the other without any interruption in power supply and without creating hazardous arcs. Bus coupler is a breaker used to couple two busbars in order to perform maintenance on other circuit breakers associated with that busbar.
Is there any difference between the circuit breakers and the isolators?
An isolator is an offload device meant for interruption of power flow to an equipment or circuit during maintenance whereas, circuit breakers are protection devices, similar to fuses, that protects the equipment from overload and short circuit faults throughout its operation.
What is a bus in an electrical system?
In power engineering, a “bus” is any graph node of the single-line diagram at which voltage, current, power flow, or other quantities are to be evaluated. A ground bus or earth bus is a conductor used as a zero voltage reference in a system, often connected to ground or earth.
What is isolator used for?
An isolator is a device used for isolating a circuit or equipment from a source of power. An isolator is a mechanical switching device that, in the open position, allows for isolation of the input and output of a device.
What is use of busbar?
Busbars, also known as busbar trunking systems, distribute electricity with greater ease and flexibility than some other more permanent forms of installation and distribution. Sometimes spelled bus bar or buss bar, they are often metallic strips of copper, brass, or aluminum that both ground and conduct electricity.
How is a bus side isolator connected to a transformer?
Bus Side Isolator is a type of Isolator that connects by the major bus. Line Side Isolator stay connected by a feeder in line side. Transfer Bus Side Isolator stay connected by the major bus of a transformer. The operation of electrical isolator can be done by the following two operational methods namely opening and closing.
Where are the isolators located in a power system?
Depending upon the position in power system, the Isolators can further be categorized into following three types according to their placement in the power system. Transfer bus side isolator: It directly connects to the transfer bus. Line side isolator: It is generally located at line side of the feeder
How did the line side isolator get its name?
These are the isolators which got there name because of the way of there connection. Line side isolator is connected between the line of any feeder. Where, bus side isolator is connected directly in between the main bus. Function of both the isolator is same i.e. to isolate the system (offload i.e. when supply is not there).
What is the difference between an isolator and a circuit breaker?
Isolators and circuit breakers are both basically switches that disconnect a part of the circuit from the power system. Isolator Is an off-loading device where the circuit breaker is an on-load device. That is, the isolator cannot be operated when there is a load, where the circuit breaker automatically operates when there is a system error.