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 Post subject: 25Hz System Arc Flash
PostPosted: Wed Jul 25, 2012 11:42 am 
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Joined: Tue Jan 27, 2009 10:49 am
Posts: 1
Can anyone provide guidance or share experiences regarding arc flash calculations for 25Hz systems ?


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PostPosted: Wed Jul 25, 2012 12:26 pm 
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Joined: Wed Aug 31, 2011 3:33 pm
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Location: Denver, CO
Good Question!!!

Below is an excerpt from IEEE 1584, it looks like tests have been performed on 50hz and 60hz. I'd be curious as to what would be a conservative approach to a 25Hz system. Is this a portion of a system? or is utility 25Hz?

[ATTACH=full]244[/ATTACH]


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