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Circuit breaker asymmetrical current

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MercedesLopez
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Ensign
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Circuit breaker asymmetrical current

Hello, 

 

Could you please explain why circuit breaker current is asymmetrical?

 

 

Best regards

Mercedes

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Accepted Solutions
Benoit_HAGE
Crewman Crewman
Crewman

Re: Circuit breaker asymmetrical current

Hello Mercedes,

 

If you are talking about the asymmetrical fault current wave form during in a circuit breaker due to the DC  Component.

You are right, the fault current in a circuit breaker could be asymmetrical depending of the power factor of the circuit and when in the cycle (50hz sinusoid) the fault ignition take place. 

 

More information on the websites below.

 

https://myelectrical.com/notes/entryid/134/dc-component-of-asymmetrical-faults

 

 

http://www.electricalaxis.com/2020/11/what-is-importance-of-xr-ratio.html

 

Benoit Hage - Electrotechnical expert

See Answer In Context

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2 Replies 2
Benoit_HAGE
Crewman Crewman
Crewman

Re: Circuit breaker asymmetrical current

Hello Mercedes,

 

If you are talking about the asymmetrical fault current wave form during in a circuit breaker due to the DC  Component.

You are right, the fault current in a circuit breaker could be asymmetrical depending of the power factor of the circuit and when in the cycle (50hz sinusoid) the fault ignition take place. 

 

More information on the websites below.

 

https://myelectrical.com/notes/entryid/134/dc-component-of-asymmetrical-faults

 

 

http://www.electricalaxis.com/2020/11/what-is-importance-of-xr-ratio.html

 

Benoit Hage - Electrotechnical expert
Tags (1)
MercedesLopez
Ensign
Ensign

Re: Circuit breaker asymmetrical current

Thanks @Benoit_HAGE for quite clear explanations, and quite complementary provided websites: I bookmark them!

 

Best regards

Mercedes

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