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 Post subject: Arcing Time for 132kV
PostPosted: Thu Sep 17, 2009 12:17 am 
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Joined: Thu Jul 23, 2009 10:30 am
Posts: 12
i intrested to do hand calculation for arc flash hazard for 33kV and 132kV. I face some problem in finding arcing time. May i know is arcing time equal to fault clearing time? How to get the arcing time for 33kV and 132kV switchgear and cables? Is it any standard that i can refer to? Thanks in advance.

Yuna :o


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PostPosted: Thu Sep 17, 2009 4:01 am 
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Joined: Sun Dec 23, 2007 1:44 pm
Posts: 348
Location: Charlotte, NC
The fault/arc clearing time will be determined by the protective device types and settings. These must be found from calibration/testing reports or by actual field tests for each device. There is no standard for that.

Alan


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