An outdoor substation is one that accommodates all voltage levels ranging from 55 KV to 765 KV. This type of substation generally requires less construction time but occupies more space. Outdoor substations are primarily categorized into two types: pole - mounted substations and foundation - mounted substations.Pole - Mounted SubstationPole - mounted substations are utilized to support distribution transformers with a capacity of up to 250 KVA. These transformers are among the most cost - effect