Transformers Magazine, Vol. 9 No. SE1, 2022.
Original scientific paper
1 Hz dissipation factor
Diego Rabalino
Vince Oppedisano
Kenneth Petrof
Abstract
The dielectric frequency response has evolved into a definitive analysis to determine the condition of the insulation system. The analysis of the NB DFR tests spectrum provides valuable pieces of information that can be used for the diagnostics of high voltage equipment. A case study has been conducted for a 10 MVA, 69/13.09 kV Dyn1 two-winding transformer that is tested in the field after OLTC repairs and before re-energization.
Keywords
case study, dielectric frequency response, dissipation factor, power factor
Hrčak ID:
277837
URI
Publication date:
9.5.2022.
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