Classification Of Distribution Transformers

Distribution transformers are divided into oil immersed transformers and dry-type transformers according to the different insulation media; According to the different voltage regulation methods, it can be divided into non excitation voltage regulation transformers and on load voltage regulation transformers.
1. Oil immersed transformers are classified according to their shell types:
1) Non enclosed oil immersed transformers: mainly including S8, S9, S10 and other series of products, widely used in industrial and mining enterprises, agriculture, and civil construction.
2) Closed type oil immersed transformers: mainly including S9, S9-M, S10-M and other series of products, mainly used in places with high oil pollution and chemical substances in the petroleum and chemical industries.
3) Sealed oil immersed transformer: mainly includes BS9, S9-, S10-, S11-MR, SH, SH12-M and other series of products, which can be used for power distribution in various places such as industrial and mining enterprises, agriculture, and civil buildings.
2. Dry type transformers are divided into insulation media:
1) Encapsulated coil dry-type transformers: mainly including SCB8, SC (B) 9, SC (B) 10, SCR-10 and other series of products, suitable for high-rise buildings, commercial centers, airports, stations, subways, hospitals, factories and other places.
2) Non encapsulated coil dry-type transformers: mainly including SG10 series products, suitable for high-rise buildings, commercial centers, airports, stations, subways, petrochemical and other fields.