DEAR ALL I have motors ( 10 units )each one is 90kw 380V 50 HZ 1000rpm but new local pwer is 220v 60 hz requierd rpm should be 1000 pleas what the beast solution is used frequncy converter or rewinding all motos or chang all motors thanks

6 Answers   GE,

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why we are using starter

5 Answers  

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Either the Armoured Earthing strip of HT 3 core cable have to pass through CB CT or not , why ???

0 Answers  

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what are the standard values for resistances(Megger testing) between L&N, L&E and N&E (L=Live,N=Neutral, E=Earth)?

1 Answers  

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what are the advantages and disadvantages of speed control of 3 phase induction motor by varying frequency explain with drawing

0 Answers   ABB, Genpect,

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What do you mean by ratio correction factor of instrument transformer?

0 Answers  

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Between Star-Delta & Star-Star Power transformer which one is efficent for Earth Fault?

10 Answers  

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what is the formulae of calculating voltage drop?

2 Answers  

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HOW TO SELECT THE COPPER CABLE SIZES OF MOTORS,TRANSFORMERS?

0 Answers   Eastern Produce,

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What Happen When We provide Dc Supply to Ac Motor

6 Answers  

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if we look on phasor of the transformer vaoltage is 180 oppsite at primary and the secondary so to improve a power factor is secondary should kept negative to improve it primary side means is -.90 became +.90 at other side

0 Answers  

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What is a thermocouple, and it working principle?

2 Answers  

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