ACB panel stands for Air Circuit Breaker. The main function of air circuit breaker is to open the circuit automatically when a fault occurs. Faults can be of various types – under or over voltage, under or over frequency, short circuit, reverse power, earth fault etc. The main advantage of air circuit breakers was that it completely replaced oil circuit breakers.
Functions of Air Circuit Breaker are:
Plain Break type ACB:
Plain ACB is the simplest form of air circuit breakers. Their point of contact is in the shape of 2 horns. In this type of circuits, the arc of the breaker extends from one tip to the other tip.
Magnetic Blowout Type ACB:
Magnetic blowout ACB’s are the breakers that are used where voltage capacity is up to 11KV. The arc in this type of circuit gets extended by the current in blowout coils which produce a magnetic field to produce extension in the arc.
Air Chute ACB:
In this type of ACB, the main contacts are made up of copper. The current is conducted in closed positions of the contacts. Their contact resistance is very low. Their contacts are silver plated. They are solid and heat resistant.
Air Blast Circuit Breaker:
These types of circuit breakers are used for heavy voltages of 245kV, 420kV or more. They have further categories:
Some of the drawbacks of ACB are:
Air Circuit Breaker (ACB) Construction & Working
Above we have given all the important details that an individual needs to know about ACB panel from beginning to end.
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