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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how to select fuse rating for a 3-phase motor ???

0 Answers  

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For a 500 MVA 400/220/33KV transformer following data given HV power = 500 MVA IV power = 500 MVA LV power = 5 MVA If input power is 500 MVA then how output power is (500+5)MVA. Can anyone help

1 Answers   MEIL,

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how to calculate the ac and dc wire losses with calculations plz tell me

3 Answers   Apollo,

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WHWT IS USE OF VACCUM CIRCUIT BREAKER

4 Answers  

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short notes on npn & pnp transisitor..........

5 Answers  

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A 1F capacitor is charged to 100V initially. A 1H inductor is connected accros the capacitor througha a switch. The current in the circiut when the switch is closed is____

0 Answers   Ecil, L&T,

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What kind of preventive maintenance are there for AC generator?

1 Answers   Gulf,

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Define the three phase formula fuse.

0 Answers   ABC, Gayatri, UPCL,

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what is on line transformer and off line transformer.

3 Answers   Cisco, HP, ICC,

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where we use stardelta starter and dol starter

4 Answers   HCL,

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What it indicates by 25/41MVA on transformer?

4 Answers  

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