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KINGZ
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Join Date: May 2008
Posts: 1

electrical

05/22/2008 2:28 AM

what is breaking capacity of a circuit breaker?

b) a circuit breaker is rated at 1500A,200MVA,33KV,3sec,3-PHASE

determine:

i)the normal current

ii)the breaking current

iii)the making current

iv)the short-time current rating

email to merrylord@yahoo.co.uk
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JohnDG
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Location: Reading, Berkshire, UK. Going under cover.
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#1

Re: electrical

05/22/2008 2:37 AM

Is this from a past exam paper?

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jack of all trades
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#2

Re: electrical

05/22/2008 3:36 PM

All this information can be obtained from the relevant circuit breaker companies website.

Wait, this DOES look like a home work question, and a really crappy one at that. There is not enough information provided to answer some of the more open-ended questions! If this is the standard of teaching at your school I can only cringe.

<cringe>

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