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 Post subject: IEC Standards for Arc Flash
PostPosted: Tue May 05, 2015 3:41 am 
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Hello,

I have seen most discussions focus on either the USA or Canada for Arc Flash standards and guides. Anyone know what is applicable in Europe or what the Europeans are doing for arc flash?

Mostly a curiosity question.

Thanks

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 Post subject: Re: IEC Standards for Arc Flash
PostPosted: Tue May 05, 2015 9:42 am 
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wbd wrote:
Hello,

I have seen most discussions focus on either the USA or Canada for Arc Flash standards and guides. Anyone know what is applicable in Europe or what the Europeans are doing for arc flash?

Mostly a curiosity question.

Thanks


The general approach, where addressed, is focussed on prevention rather than mitigation. So you see a lot of interest in arc resistant gear and arc termination devices but little to nothing on PPE. This is in alignment with the European way to doing risk assessments. EU safety standards mandate an analysis following "ALARP" (as low as reasonably practicable) so the goal would be to design out the hazard in the first place and then only use PPE as a last resort whereas U.S. practice for some reason seems to be to use PPE and only after that consider how to design out the risk. The test configuration for arc flash testing was also very different from the IEEE 1584 design, more of a box-barrier design, which results in higher incident energy. By way of example, CIGRE recently published a lengthy design document for software to simulate pressures in enclosures developed by arcs so that arc resistant gear could be designed by computer modelling for the most part, minimizing the number of field tests that have to be done to develop new equipment whereas the corresponding research dollars in the U.S. have gone into refining the incident energy calculations.


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