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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How much depth we will take in 33kv sub station and why.

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why we did not get shock by touching +ve OR -ve busbar (Which are going to supply cell voltage) of Rectifier- Tranformer in electrolysis plant?

4 Answers  

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Explain the working principle of Synchronous Generator and Assynchronous generator?

11 Answers   TATA,

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what happens to current , when voltage drops .?

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I'm generating a pulse of 3V with frequency 80Hz (12.5ms time period) and pulse duration 0.125ms and feeding it to a transformer since i want the pulse to get amplified around 60V. At the output amplification s happening but the pulse is changed to a spike, can you tell me what could be the reason? (an ordinary transformer 220V-12V stepdown transformer is reverse connected ie. now it is 12V-220V stepup and voltage amplification happens)

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What is the dependency of stiffness on load angle??

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How do you commission a power Transformer?

1 Answers   EEI,

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why the transmission side of the generating transformer is always star??

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what is the purpose of using semiconductors in HT cables

3 Answers   Sterling,

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comparision between mcb,mccb,elcb,flcb,elcb in details

0 Answers   ABB,

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