Yes, dry-type transformers are generally considered low maintenance compared to oil-immersed transformers. The main reason for this is that they do not require oil for cooling or insulation, which eliminates the need for regular oil sampling, testing and replacement over time as well as other maintenance associated with oil-immersed transformers.
Dry-type transformers also have a simpler construction compared to oil-immersed transformers, which makes them easier to maintain and repair. The absence of oil also eliminates the risk of oil spills, which can cause environmental damage and clean-up costs.
Overall, the design and construction of dry-type transformers make them a low maintenance solution for many applications. However, it is important to follow the manufacturer’s guidelines for regular inspections and maintenance to ensure that the transformer continues to operate effectively and safely over its lifespan.