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Regarding Standards, ie ANSI and IEEE, where do i go to find the documents? Are there any links to sites that have these available, or must they be ordered and purchased? Thankyou all for your quick and helpful responses! Regards, nigel.

In the process of measuring power factor, I wish to use a C.T. and a P.T., how do I determine the errors that these devices will introduce to the signals I am trying to measure? What are accepted methods of measuring PF? How do I minimise these errors? Nigel.

Thankyou so very much for your help in this!!! I am most grateful Regards, Nigel.

Thankyou moturcu for your response, to clear up my original question.... Why is it that when there exists a phase angle between the volts and amps that the 'useful' power is reduced? What is happening in the part of the cycle when volts and amps are opposing each other, or even when they are...

I am currently trying to understand how Power Factor effects the output of a welding transformer. I understand how it is calculated, in terms of difference of phase angle between volts and amps, but how does the voltage affect the output? A transformer relies upon a changing magnetic field on...