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 wave traps are placed only at y and r phase?

3 Answers  

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Difference between megger test equipment and contact resistance meter test instruments?

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if we convert ampers into kw,which one formula use by us,pls tell me?

11 Answers   ABB,

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How i can identify the 220V and 110V power supply equipment? No tag number.

4 Answers  

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why we use salt for earthing?

1 Answers  

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what would happen if u assume to insulate all the overhead lines and no insulators....??do you think it to b an advantag or a disadvantage??justify.

3 Answers  

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What is center gravity load in substation?

0 Answers  

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Details about Flux Compensated magnetic Amplifer starter for motors

0 Answers  

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If ct ratio is 250/1 and mtr is of 5 amp, what will be mf?

1 Answers  

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What is the GNA & MNA in armature reaction of Dc Generator

2 Answers   Khetan,

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if the load is reactive then what is the use of calculating the real power and what is the use of reactive power if my question is wrong please excuse me..

1 Answers  

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