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 ...

Maintaining substation transformers isn't a new idea, but it's not always given the attention it deserves. Transformers will self-destruct over time, and failure to conduct regular transformer oil ...

Part 1 of this three-part series laid out an overview of a proposal to create a numerical health index and establish a practical program for power transformer maintenance. Part 2 breaks down each of ...

So you have an old tube-type transmitter as a backup. It ran perfectly when you last turned it on two years ago to substitute for your then-ailing solid-state main transmitter. Now you need it again.

ABB began developing drytype transformers for medium voltage applications in the 1970s, recognizing that oilfree technologies help transformers comply with the highest safety standards for people, ...