How long do power transformers on utility poles usually last in the U.S. in areas with warm climates before it needs to be replaced?How long do power transformers last?Most were designed for 30 years. In general they last longer, but the problem is one of statistics and the time of replacement takes that probability into consideration along with potential cost of failure while in service.
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.How long do power transformers last?0 to 75 Years
Some are not lucky and get hit by lightning on day 2, some never see any abuse or stress!
The old ones get replaced because they are not environmentally compatible anymore or sometimes the system gets upgraded and they dont have the voltage taps...not that they failled or were about to.
Hope this properly answers your question
Guru
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