Dry type Power/distribution transformer zero sequence measurement meth
Dry type Power/distribution transformer zero sequence measurement meth
(OP)
Can anybody tell me how to measure the zero sequence impedance of a dry type power/distribution transformer?
Thanks
Thanks






RE: Dry type Power/distribution transformer zero sequence measurement meth
If you hahe a transformer whit only une neutral point externaly:
Basically you need a AC monophasic source to excit the windings, cables and another hardware to connect and of course measurement equipment.
You have to short circuit the terminals of the widings that you want to measure and then you apply AC power between the short circuits terminals and the neutral terminal.
Take the value of the current and voltage fron the source and calculate Zo=3E/I.
The procedure is diferent for others types of transformers (if you have delta windings or if you have one or two neutrals externals terminals.
If you want i can send you a test procedure via e-mail but this document was made in spanish.