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Wally Vahlstrom
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Post subject: 25Hz System Arc Flash  Posted: Wed Jul 25, 2012 11:42 am |
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Joined: Tue Jan 27, 2009 10:49 am
Posts: 1
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Can anyone provide guidance or share experiences regarding arc flash calculations for 25Hz systems ?
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JCV
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Post subject: Posted: Wed Jul 25, 2012 12:26 pm |
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Joined: Wed Aug 31, 2011 3:33 pm
Posts: 14
Location: Denver, CO
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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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