Many articles and papers ([1], [2], [3]) have been written and are still being written about the IEC 61850 protocols – some have even appeared in Electrical Tester ([4], [5]). This article, however, will only mention the IEC 61850 protocols briefly...

For almost a century, capacitance and power factor tests have been routinely performed on transformer bushings. In more recent times however, dielectric frequency response (DFR) testing has been recognised as an expanded form of power factor testing that...

Magnetically ‘soft’ materials – materials that are easy to magnetise, demagnetise and remagnetise – are widely used in electrical power systems. They play a crucial role in transformers and devices like motors and generators that...