how to calculate cable size, olr rating, contactor rating
and mccb rating,to below given details three phase motor
75 kw,415 v,.85 pf,50 hz?
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Answer Posted / v.raguvaran
THE MOTOR AMP IS 130AMP.THE CABLE(USE COPPER ) SIZE SHOULD BE 45sq.mm (delta connection),35sq.mm(star delta)
OLR RATING IS (125-135) BUT STANDARD SIZE IS (130-175)ABB
CONTACTOR RATING IS 200A(DELTA),100(MAIN)-100(DELTA)-50(STAR)
MCCB RATING IS 250A
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