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Adithian
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Post subject: Short circuit Peak or Short Circuit RMS while doing ArcFlash  Posted: Wed Sep 25, 2024 2:55 am |
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Joined: Wed Sep 25, 2024 2:52 am
Posts: 1
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While doing arc flash calculation, should we consider the Peak kA or RMS value.
Wouldn't it be a conservative way to consider the Peak short circuit ? or is it plain wrong
thanks
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mpparent
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Post subject: Re: Short circuit Peak or Short Circuit RMS while doing ArcF Posted: Thu Sep 26, 2024 11:47 am |
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Joined: Thu Apr 18, 2019 11:42 am
Posts: 138
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Have you read the IEEE 1584 standard?
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Jim Phillips (brainfiller)
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Post subject: Re: Short circuit Peak or Short Circuit RMS while doing ArcF Posted: Thu Sep 26, 2024 5:37 pm |
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Joined: Mon Sep 17, 2007 5:00 pm
Posts: 1725
Location: Scottsdale, Arizona
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It is the bolted rms symmetrical fault current. Plus evaluating different scenarios, max and min etc. to see if it affects overcurrent device operation. If you are about to undertake an arc flash study, you might want to take a deep dive into the standard and all of it's moving parts. There is a lot to know.
The "Training" menu item above takes you to IEEE 1584 / Arc Flash training and there are a few free classes, articles and videos on the subject to help.
Check back if you have more questions.
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