What is the life expectancy of a dry transformer?

Industry standards and practical experiences suggest that well-maintained dry type transformers can serve effectively for up to 35 years or more under optimal conditions. In exceptional cases, they may even last up to 30 years.

The service life of a dry-type transformer is primarily affected by the following factors:

Temperature: Temperature is a significant factor affecting the service life of a dry-type transformer. High temperatures can cause insulation materials to age, weakening their insulation capacity and accelerating the decline in transformer life. Therefore, maintaining the normal operating temperature of the dry-type transformer is key to extending its service life.

Load: The load of a dry-type transformer also affects its service life. Long-term overload operation can cause the transformer to overheat, damage the insulation materials, and shorten its service life. Therefore, it is crucial to properly manage the load when using a dry-type transformer.

Ambient humidity: Humidity also has a significant impact on the service life of a dry-type transformer. High humidity can cause moisture in the insulation materials, leading to leakage and even short-circuit accidents. Therefore, it is important to carefully control the ambient humidity when installing a dry-type transformer.

Maintenance: Regular maintenance can extend the service life of a dry-type transformer. For example, regular inspections of insulation material degradation and timely replacement of damaged parts are essential to ensure the longevity of a dry-type transformer.

In general, the service life of a dry-type transformer is approximately 25 to 30 years, but the specific lifespan depends on a combination of the above factors. If dry-type transformers are properly operated and maintained, it is possible to further extend their service life.