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 Post subject: Arc Flash for 132kV (IEEE 1584)Posted: Wed Aug 19, 2009 5:31 pm

Joined: Thu Jul 23, 2009 10:30 am
Posts: 12
Dear all,

i found that the IEEE 1584 only provide the calculation for 15kV below? Can anyone tell me how to get the arcing current, incident energy for 132kV switchgear where cable termination?

Thanks

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 Post subject: Posted: Wed Aug 19, 2009 9:59 pm
 Arc Level

Joined: Tue Jan 13, 2009 5:00 pm
Posts: 585
The IEEE 1584 spreadsheet and some commercial software packages transition to the Lee method above 15 kV. This is an option, but the Lee equations are highly voltage Dependant and you may find the results overly conservative. ArcPro is another option that will give more reasonable results.

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 Post subject: Posted: Thu Aug 20, 2009 4:59 am

Joined: Thu Jul 23, 2009 10:30 am
Posts: 12
From IEEE 1584, LEE method is used to calculate the flash-protection boundary. (Correct me if i understand wrongly). By the way, how do we calculate the arcing current and incident energy (By hand) for 132kV? Thank you.

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 Post subject: Posted: Thu Aug 20, 2009 5:22 am
 Sparks Level

Joined: Sun Dec 23, 2007 1:44 pm
Posts: 348
Location: Charlotte, NC
Just have to ask.....Who is going to be working on 132 kV gear hot?

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 Post subject: Posted: Thu Aug 20, 2009 6:30 am
 Arc Level

Joined: Tue Jan 13, 2009 5:00 pm
Posts: 585
Yes, your understanding is incorrect. See section 5.4 on page 12 for the Lee IE equation. Also built into the spreadsheet.

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 Post subject: Posted: Fri Aug 21, 2009 7:52 am

Joined: Thu Jul 23, 2009 10:30 am
Posts: 12
Dear Stevenal,

Can i use the LEE method to calculate the incident energy and Flash protection boundary ? Is bolted fault current equal to asymmetrical short circuit current which calculated as IEC 60909?

Besides, i fail to download the IEEE 1584 spreadsheet in my university. May i know where can i get the IEEE 1584 spreadsheet?

Thank you

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 Post subject: Posted: Fri Aug 21, 2009 7:54 am

Joined: Thu Jul 23, 2009 10:30 am
Posts: 12
Dear acobb,

Currently i'm doing arc flash studies onto 132kV, 33kV and 11kV. I still fail to get my way. Is there anybody can give me a light to my research?

Thanks a lot

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