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Theory of Circuit Interruption

Arc Interruption Methods in Circuit Breakers

Arc Interruption Methods in Circuit Breakers: The two modes of Arc Interruption Methods in Circuit Breakers are: high resistance interruption, and low resistance or current zero interruption. High Resistance Interruption: In this case the arc is controlled in such a way that its effective resistance increases with time so that the current is reduced to …

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Arc Properties

Arc Properties: The manner in which the are medium is made to conduct has already been studied. A plot of instantaneous values of voltage eB between the electrodes of a burning arc against the corresponding values of current gives the Arc Properties. With the increase of arc current the temperature rises and the process of ionization …

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Arc in Circuit Breaker

Arc in Circuit Breaker: Discharge in a.c. circuit breakers, generally in the form of an arc, occurs in two ways. When the contacts are being separated arcing is possible  even when the circuit emf is considerably below the minimum cold electrode breakdown voltage, because of the large local increase in voltage due to the circuit …

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