1) Under normal medium conditions, oil immersed transformers or dry-type transformers can be selected, such as independent or attached substations in industrial and mining enterprises, agriculture, and independent substations in residential areas. 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 use 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 such as BS 9, S9-, S10-, SH12-M should be selected.
4) High and low voltage distribution devices without flammable oil and non oil immersed distribution transformers can be installed in the same room, and the transformers should be equipped with IP2X protective enclosures for safety.
