According to the different insulation media, distribution transformer is divided into oil-immersed transformers and dry-type transformers;
Oil-immersed transformers are divided into three kinds according to shell type:
a.non-closed oil-immersed transformers: mainly S8, S9, S10 and other products, are widely used in industrial and mining enterprises, agriculture and civil buildings.
b.closed type oil-immersed transformers: mainly S9, S9-M, S10-M and other products, used in petroleum, chemical industry, more oil, the place with more chemical substances.
c.sealed type oil-immersed transformers: mainly BS9, S9-, S10-, S11-MR, SH, SH12-M and other products, can be used for industrial and mining enterprises, agriculture, civil construction and others.
Dry-type transformers are classified as insulating media:
a.enclosed coil type dry type transformers: mainly SCB8, SC (B) 9, SC (B) 10, SCR-10 and other products for high-rise buildings, commercial centers, airports, railway stations, subways, hospitals, factories and other places.
b.non-encapsulated coil dry-type transformers: there are SG10 series of products, suitable for high-rise buildings, commercial centers, airports, railway stations, subways, petrochemical and other places.
