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Arc-in-a-box: DC arc flash calculations using a simplified approach

Steve McCluer

Michael Fontaine

There is an arc-in-a-box effect whenever an enclosure is involved for dc and ac systems. This paper looks at the arc-in-a-box effect for dc systems, particularly those where batteries are involved, using a multiplying factor and the dc maximum power method. It also looks at how battery cabinets are different than MV switchgear and require additional testing.

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