Choose transformers according to the usage environment:

1) Under normal medium conditions, oil immersed transformers or dry-type transformers can be selected, such as independent or attached substations for industrial and mining enterprises, agriculture, and residential independent substations. The available transformers include S8, S9, S10, SC (B) 9, SC (B) 10, etc.
2) In multi story or high-rise main buildings, it is advisable to choose non combustible or flame-retardant transformers, such as SC (B) 9, SC (B) 10, SCZ (B) 9, SCZ (B) 10, etc.
3) In places where dust or corrosive gases seriously affect the safe operation of transformers, enclosed or sealed transformers should be selected, such as BS9, S9-, S10-, SH12-M, etc.
4) High and low distribution devices without combustible oil and non oil immersed distribution transformers can be installed in the same room. At this time, the transformer should be equipped with an IP2X protective casing for safety.