I have a small system with two motors that are running on 380 vac, 60 hz. These motors are expensive and I usally get them from Brazil. I am adding another motor to the system, but I want to purchase a 480 vac, 60 hz motor to use. It will be on a VFD that is rated fro 380 thru 480. Is this posible and will I have to use a larger motor and derate it?

0 Answers   US Electrofused Minerals,

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help me with the question that might be ask on the interview for technical position

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2 Answers  

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We use ACB in LT and VCB in HT.But if we use VCB in LT and ACB in HT that what will be the effect on the system or any power range?

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Diff between power trans and generating transformer?

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In CDG type IDMTL realy O/L , E/F, O/C which are used for out going feedrs,on R-phase o/c element, Y-phase , e/f elecment and on b -phase o/c element will be connected . Why the earth fault on center phase only, why not on other two phases?

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we touch other end of the tester supply, why do not get shock?

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long form of CT

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what is the significance of cabability curve of alternator

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Why the airgap of an induction motor is less compared to that of a synchronous machine?

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why C.T secondary are rated 5A generally?

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explain harmonics in simple words..........

3 Answers   HMT,

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