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gfdonahue@kfi-eng.com
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Post subject: Arc Flash Calculation for currents > 106kA  Posted: Tue Nov 21, 2023 2:58 pm |
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Joined: Thu Sep 22, 2022 1:41 pm
Posts: 1
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Is there any guidance for handling arc flash calculations > 106kA. I ran SKM and with a 180kA availability and a current limiting fuse, it gave me a IE of 1.6cal/cm2. SKM suggest using NESC or EPRI. NESC is not based on specific short circuit availability and the papers it is based on only used upto approximately 54kA. NESC reported 40 cal/cm2 based on the voltage and equipment type. EPRI gave me a result of 47.5 MILLLION cal/cm2.
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stevenal
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Post subject: Re: Arc Flash Calculation for currents > 106kA Posted: Wed Nov 22, 2023 8:55 am |
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Joined: Tue Jan 13, 2009 5:00 pm
Posts: 630
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The NESC tables were generated with ArcPro. I just checked, and V3 tops out at 90 kA.
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