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 Post subject: Protective Device Bolted Fault & Arcing Fault Current Eqn
PostPosted: Thu Aug 31, 2017 2:18 pm 
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Iabr=Ia*IBbr/IB;
Iabr: is arcing fault current through each protective device
IBbr: is Bolted Fault Current through each protective device
Ia: is bus arcing fault current
IB: is bus bolted fault current
We can easily compute Ia & IB by IEEE 1584 equations, but I could not find Iabr & IBbr from the above equations. There are two unknown parameters in one equation. Can anyone share a complete equation, if you have please. You may find it in Annex D of CD ROM if you have a copy of IEEE 1584 2002 edition.


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