Answer / vimal patel

You have to find that polarization index for insulation level which is depend on Voltage level and some other parameter so refer some reference for it like wikipedia for it...

What is bushing?

4 Answers  

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what are the main components of fan?

2 Answers  

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4-Why we measure the insulation resistance of main core and frame in spite of that must be connected with ground before energize the transformer?

3 Answers  

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when we use neutral line as grounding.

1 Answers  

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if 1hp jet motar drop voltage when start from 220v to 120v give the reason and solution.

1 Answers  

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How can transformer oil be used in transformers with voltage rating above its breakdown voltage?

2 Answers  

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Whats parameters which we keep in mind when grounded any electrical machine.

1 Answers   Essar,

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How does the phase sequence controller works, how it identifies the phases? confirm working principle

0 Answers  

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Simple calculation of improving power factor?

5 Answers  

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what is dead tank CT AND what is live tank CT

2 Answers   TATA,

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can we use trip light with bus coupler?

0 Answers  

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if 6 earth pit value is 1.5 ohm then what should be the number of earth pit to make the value .8 ohm

0 Answers  

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