How does an outdoor substation differ from an indoor substation?

Outdoor substations and indoor substations serve important roles in the electrical distribution system but differ significantly in their exposure to environmental elements. Indoor substations are specifically designed to be located within buildings to protect critical equipment from various environmental factors such as rain, snow, extreme heat, and dust. These features enhance the reliability and longevity of the equipment, as they minimize the risk of weather-related damage.

In contrast, outdoor substations are typically constructed to withstand such conditions, as they are exposed directly to the elements. This exposure influences various aspects, such as maintenance practices and equipment selection. By understanding that indoor substations are less exposed to environmental elements, one can appreciate the design considerations that engineers prioritize when determining the location and construction of substations.