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 / pvr.parthasarathi
75 Kw motor takes 134 amps full load current. But for
selecting its Cable, Contactor, OLR and MCCB, we have to
consider many other factors such as need of its operation.
Place of the Motor Control Centre and possibility of laying
the cable Wheter inside the duct, underground or in the
air. For selection of the Contactor enclosure of the
panel, its environments etc are to be taken into
consideration. So giving answer at a stretch basing on
some thumb rule is not technically qualified.
Other particulars are required.
| Is This Answer Correct ? | 19 Yes | 5 No |
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