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When low inductive currents, such as magnetiing current of transformer, shunt reactors are interrupted by breaker, there is rapid deionization of contact space and may cause the current to be interrupted before its neutral zero. This phenomena is called current chopping. This generally occurs during opening small inductive currents by vacuum ckt brkr or air blast circuit brkr. The transient voltage having high restriking voltage RRRV appears across the contacts, unless the arc restrikes. If it restrikes a further, chop may occur or several chops may occur before the current is finally interrupted. Circuit breaker may fail to clear the current.
Circuit breaker in which dielectric strength of contact space grow at slow rat, the problem of current chopping is less severe as the gap breaks down and absorbs successive magnetic energy by restriking. Oil circuit breakers are therefore suitable to such application. This is the reason that sometimes in air blast circuit breakers resistance switching is adopted.
Wiki User
∙ 10y ago
Wiki User
∙ 8y agoIt can be defined as followed. Current with minor fluctuations.
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Which type of circuit breakers used in railway applications in India?
Vacuum circuit breaker is used in railway applications and as it is used in the applications where current chopping phenomenon is more
Current in which electrons flow in the same direction is called?
It's alternating current
Is the base current smaller or larger than the emitter current?
The base current of the emitter current is smaller.
Why do you need to have water continually running while using a garbage disposal?
The water assists in chopping up the items being chopped and washes them down the drain to prevent stoppage.
Current from a battery is always?
Direct current, as opposed to alternating current.
What is meant by current chopping?
When low inductive currents, such as magnetiing current of transformer, shunt reactors are interrupted by breaker, there is rapid deionization of contact space and may cause the current to be interrupted before its neutral zero. This phenomena is callad current chopping
What are chopping boards used for?
Chopping
A sentence with the word chopping?
the chef is chopping tomato
When was Chopping Machine created?
Chopping Machine was created in 1995.
When was Richard Chopping born?
Richard Chopping was born in 1917.
When did Richard Chopping die?
Richard Chopping died in 2008.
What are wooden glass and plastic chopping boards used for?
chopping
What is the tray you use in chopping called?
Chopping board/ cutting board
What is the duration of Chopping Mall?
The duration of Chopping Mall is 1.28 hours.
What is the duration of The Chopping Block?
The duration of The Chopping Block is 3600.0 seconds.
What is the meaning of chopping cotton?
Chopping cotton isn't really chopping cotton. When you are "chopping cotton" you are chopping down weeds that are growing in the rows that the cotton is planted in. Johnson grass and stuff like that.
Who uses the chopping board?
Every cook uses a chopping board. ( or should )
