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 ...

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, ...

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U.S. electricity consumption continues to increase almost 2% annually. As the load growth spurs calls for new power plants and transmission lines, it’s easy to forget the impact of the additional ...

Dissolved Gas Analysis (DGA) is one of the most trusted diagnostic tools for assessing the internal condition of a ...

Effective transformer maintenance depends on dissolved gas analysis. Effective maintenance of liquid-filled transformers begins with prevention of failure by testing transformer oil for unusual ...

As large electrical transformers age, their internal structure can break down, creating hazardous conditions. One of the most dangerous is the buildup of combustible gases in transformer cooling oil ...