Which component is installed on dry-type distribution transformers to make them weather resistant for outdoor installations?

In outdoor installations, dry-type distribution transformers require protection from various environmental factors, including rain, snow, and other weather-related elements that could potentially damage the internal components. Weather shields are specifically designed to serve this purpose by providing a barrier against moisture, dirt, and debris, ensuring the transformer remains operational and reliable in adverse weather conditions.

Weather shields facilitate air circulation while preventing water ingress, thus helping maintain the transformer's efficiency and extending its lifespan. This protective measure is essential for transformers operating outdoors, as improper exposure can lead to insulation failure and other electrical issues.

While insulation layers provide internal protection to components against electrical failures, and rain covers may also serve a purpose similar to that of weather shields, the primary function of weather shields is to enhance the transformer's resilience against the outdoor elements in a way specifically suited for these installations. Heat sinks, on the other hand, are more related to thermal management within devices and do not contribute to weather resistance.