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Offline measurements on transformers

Thanks to the recent acquisition of new tools and skills, West Power has been able to perform, for the first time in its history, a series of offline measures on 3 step-up transformers installed in a combined cycle plant for an Italian customer.

The following measurements were performed, winding short circuit inductance, ohmic winding resistance, SFRA (Sweep Frequency Response Analysis), Insulation Resistance and polarization index of windings, towards ground and between windings.

The measurements were successful, and compared with previous measurements on the same machines, these transformers are in excellent condition.