What is the life expectancy of a transformer? 20, 30, or 40+ years?
![](https://www.bowerselec.co.uk/app/uploads/2022/10/Power-Transformers-scaled.jpg)
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Transformer Life Expectancy – How long will your transformers last?
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Need to Take Transformers Beyond EPACT 2005
![](https://elscotransformers.com/wp-content/uploads/2022/01/Bathtub-Curve-1_optimized-300x136.webp)
Transformer Reliability Decreases with Age
![](https://ars.els-cdn.com/content/image/1-s2.0-S2090447921004391-gr2.jpg)
Reliability calculations based on an enhanced transformer life expectancy model - ScienceDirect
![](https://ars.els-cdn.com/content/image/1-s2.0-S2090447921004391-gr3.jpg)
Reliability calculations based on an enhanced transformer life expectancy model - ScienceDirect
![](https://image.slidesharecdn.com/200905highefficiencytransformers-151228002717/85/need-to-take-transformers-beyond-epact-2005-7-320.jpg?cb=1671902176)
Need to Take Transformers Beyond EPACT 2005
![](https://ars.els-cdn.com/content/image/1-s2.0-S2090447921004391-gr7.jpg)
Reliability calculations based on an enhanced transformer life expectancy model - ScienceDirect
![](https://ars.els-cdn.com/content/image/1-s2.0-S2090447921004391-gr11.jpg)
Reliability calculations based on an enhanced transformer life expectancy model - ScienceDirect
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Why does a delta/wye transformer make 30 degrees phase shift ? - Electrical Engineering Stack Exchange