go to the Power transformers product page Anonymous asked on Dec 16th, 2013 in Power transformers

I've heard that the design life of a transformer is 30 years. Why do some last much longer, while others fail even before they reach 30?

Abhishek Rai, Marketing and Sales Manager

ABB's answer

There are organic materials in a transformer that decompose over time. Decomposition is accelerated by temperature and the presence of moisture, oxygen, acids and other contaminants. Transformer oil can be tested to determine whether a transformer is aging too rapidly, and the oil can be upgraded to help maximize the transformer`s lifetime. Also, cooling systems and seals may not last 30+ years, but maintenance will go a long way to maximizing a transformer`s operational life. Design, manufacturing process and materials used (particularly solid insulation) make a difference, as about 80 percent of all transformer failures have roots there.

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  • Abhishek Rai

    Abhishek Rai

    Marketing and Sales Manager

    Large and medium power transformers

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