we have require a Motor (1500kW, 6.6kV, 50Hz) which shall operate at 1500rpm during 30min and after it shall run on 500rpm during 15min. The same cycle shall be repetitive during the whole working days. Which method is best and economic to achieve such type of task. VFD, VVFD, Pole changing motor etc.

0 Answers   MTN,

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low voltage distribution is done by a)3 phase 3 wire b)3 phase 4 wire c)single phase

3 Answers  

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what is current

53 Answers   Bio Enterprises, CLG, TCS,

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What is the permissible sound level for 1000kva DG set and how the sound level is calculated.

1 Answers  

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What is third harmonic?what is the effect of it?

0 Answers   GMR,

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what is a difference b/w earthing & neutral?

5 Answers   ABB, KEC, Sterlite,

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What are the factors which influence the choice of specific magnetic and electric loadings of a synchronous machine?

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what do you mean by puncturing of insulator by ice -coating?

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How to discuss the phase shift of transformer considering open delta?

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principle of power export and import in captive power plant.Is it depends upon voltage,current or frequency?Plz explain briefly.

1 Answers  

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