hi friends,
I am from EPC industry, from engineering. with that further, i know that arc flash study is generally carried out after the relay coordination study is over at about end of engineering completion. but when during the intial stage when i have performed the arc flash analysis with some standard hypothesis of clearing time and results showned me many of my switchboards in category 3 or 4 for LV 480V. Now, i know the mitagation measures. But this mitigation measure may add up cost to the switchboard. So should i wait uptill the switchboard has been finalized and then the relay setting is freezed. But at that stage i shall not be able to change anyting in the switchboard or it may be more difficult . or shall i take precautionary changes in the pre-order stage itself to control the arc flash energy. plz help me in this
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