the single phase voltage is 230 volts and threee phase is 430 v.why three phase is not 660 v?

2 Answers  

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How can i learn to programme every VFD. Or is there any typical study to understand VFD programming.

1 Answers   Volkswagen,

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Mention what are the different colors on wires indicates?

0 Answers  

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What is the Derating factor of power cables when exposed to direct sunlight in (both PVC & XLPE).

1 Answers  

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What is the difference between INVERTER and UPS?

7 Answers  

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why in india the voltage generate multiply by 11,,,like 220v,440v,11kv,33kv,66kv,220kv,

3 Answers   NTPC, Servotech, Tata Power,

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Can we use the 60 HZ transformer/rectifier/Motors/Coils in 50 HZ? if not so, why?

3 Answers  

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does the Trivector Meter of three phase automatically takes care of the low power factor and gives the reading accordigly or it does not take care of the Power factor while giving the readings please explain

0 Answers  

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what is meant by motor startup supervision & motor load jam protection ?

0 Answers   ABB,

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Explain the working principle of Synchronous Generator and Assynchronous generator?

11 Answers   TATA,

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A 11 KV motor is working. if the supplay is fail. what will happened with it's breaker? Trip / remain the same condition?

4 Answers  

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explain how to protect high rise building from the risk of lighting.

1 Answers  

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