The life expectancy of a distribution transformer is typically 30 to 40 years.
Several key factors can impact a transformer’s lifespan, such as the quality of its design and manufacturing, the materials used, and the operating conditions it is subjected to. Proper maintenance, including regular inspections, cleaning, and repairs, can help extend a transformer’s life. Overloading, exposure to harsh environmental conditions, and inadequate maintenance can all reduce a transformer’s life expectancy.
While 30 to 40 years is the average life expectancy, some well-maintained transformers in favorable operating conditions may last even longer. However, transformers exposed to extreme conditions or those that are poorly maintained may fail prematurely, requiring earlier replacement.
