Answer Posted / vinod

in EHV single phase PT are using, primary one end need to
earth for taking stable 3 phase secondary from three single
phase PT

What are the types of instrument transformer?

1166

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Is there any reason that we get shock on touching phase wire because the earth is at neutral potential? Is there any reason that the earth is at neutral potential because the neutral is earthed in apower station

2006

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why most of junction box vendors providing T5/T6 Temp class jb's for T3 area any special reason?

2089

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When we giving the 3 phase supply to ups system how to coming netural?

2101

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Explain about p.t?

1073

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I just purchased a 4 position cam switch to be used to operate a 3-speed blower motor. The motor is a 10 amp motor and has 3 wires that are used to control speed. The cam switch was rated at 660V 20 amps but when I received it, I noticed that it has AC-15 operational current rating (Ie) of 4/5 amps. If I am reading the label correctly. the 4/5 amps is related to 440v/220V (Ue). Other ratings are AC-3: 5.5A, AC2: 7.5A and AC-4: 1.5A. My questions are 1) Is it safe to use this switch with the motor I have 2) what is the difference between the 20 amp Ith ratting and the Ie operational ratings?

1738

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What is BusBar integrity test and how it is conducted?

2241

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What is meant by a stray loss of a induction motor??? What is the equation to find it

3084

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What is Annunciation?

2021

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Is it possible to obtain 480v or 550v in single phase output by giving the input to 230v to a single phase torodial type transformer without using a stepup transformer?

1985

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Explain cos(theta) and Sin(theta)

2095

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How DC earth leakage currents can be reduced ?

1918

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Difference between HRG and NGR. Are they both the same thing

4278

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I WANT BHEL PREVIOUS QUESTION

2348

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What is UPS and How do you maintain the UPS Maintenance? Brief Description on UPS maintenance.

2577

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