Dear Everyone,
The Circuit Breaker nameplate used Standard IEC 62271-100,but sadly I don't have that standard.
I don't know how can I get the minimum time delay of that circuit breaker as well as its X/R test ratio.
I used manual calculation of short circuit calculation. And used ETAP software for validating may answer. But ETAP requires the minimum time delay of CB which range from 0.01 sec to 0.3 sec. Upon checking in ETAP and using different minimum time delay its show that the asymmetrical breaking current value decreases as time increases. I dont know what will I used in the minimum time delay so that I can evaluate my short circuit calculation to the rated CB.
Hoping someone who can help me.
Thank You Very Much Everyone for sharing your knowledge and expertise.
The Circuit Breaker nameplate used Standard IEC 62271-100,but sadly I don't have that standard.
I don't know how can I get the minimum time delay of that circuit breaker as well as its X/R test ratio.
I used manual calculation of short circuit calculation. And used ETAP software for validating may answer. But ETAP requires the minimum time delay of CB which range from 0.01 sec to 0.3 sec. Upon checking in ETAP and using different minimum time delay its show that the asymmetrical breaking current value decreases as time increases. I dont know what will I used in the minimum time delay so that I can evaluate my short circuit calculation to the rated CB.
Hoping someone who can help me.
Thank You Very Much Everyone for sharing your knowledge and expertise.