The power factor measurement has long been accepted as an invaluable tool for identifying insulation defects, such as ageing, deterioration, moisture ingress and localized failures, involving the ...

Electrica signature analysis (ESA) uses the magnetic field in the air gap of an electrical machine to evaluate power quality conditions. Dry and oil transofrmer types are subject to problems ...

Dielectric frequency response determines moisture content in transformer insulation. An important aspect of maintaining a transformer is ensuring that it has low moisture content. New dry transformers ...