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 ...

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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, ...

ASTM International’s electrical insulating liquids and gases committee (D27) has approved a new standard that will cover the use of recycled oil in electrical equipment. Most wet-type transformers in ...

The U.S. Department of Energy’s (DOE’s) final energy efficiency standards for distribution transformers appear to strike a compromise with industry, softening the agency’s stance on steel requirements ...