The costliest piece of equipment in a substation is the Power Transformer. Therefore, a good maintenance program is required to keep these power transformers operating reliable. Over the past few ...

Partial discharge in transformers can occur in gas bubbles or within oil and paper insulation, with PD activity potentially leading to insulation failure over time. On-site PD testing methods are ...

The purpose of electrical signature analysis (ESA) is to use the magnetic field in the air gap of an electrical machine to evaluate power quality — the condition of the electrical and mechanical ...