Answer / rk

The insulating power factor test, better known as the ”Doble
Test”, is a complete overall test of the insulating
properties of a transformer. Elements such as carbonization,
ionization, moisture, and heat can breakdown the
insulation's strength. The Doble test measures the power
losses due to leakage current through the insulation.

speed of an electric wave

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there is an alternator 480 k.w, 400v,50hz, 4-wire running on load having leakage alternator body earthed current 38 A. is it within acceptable limit? if yes then give reference if no then how to bring within specified limit

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what is sevice settings for mccb?How can be it setted?

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what is the excess air in furnace

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What is the necessary and sufficient condition for stability.

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what is need of air gap in expansion section in busbar?

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how to calculate cable size, olr rating, contactor rating and mccb rating,to below given details three phase motor 75 kw,415 v,.85 pf,50 hz?

5 Answers   Cabin Crew, Essar,

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If two transformers same rating(11KV / 440V)connected in the same primary line(11KV), can we connect(bus coupler) secondary side directly or need a synchronization????

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What is the difference between XLPE & FRLS cables? Is FRLS cables is a type of XLPE cable or both r different?

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