Distribution transformers are classified

Distribution transformers are classified based on the insulation medium as oil-immersed transformers and dry-type transformers;

and based on the voltage regulation method, they are divided into no-excursion voltage regulation transformers and on-load voltage regulation transformers .

1. Oil-immersed transformers are classified according to the shell type as:

1) Non-sealed oil-immersed transformers: mainly include S8, S9, S10 and other series products, which are widely used in industrial and mining enterprises, agriculture and civilian buildings.
2) Sealed oil-immersed transformers: mainly include S9, S9-M, S10-M and other series products, mostly used in places with oil pollution and chemical substances in the petroleum, chemical industries.
3) Sealed-type oil-immersed transformers: mainly include BS9, S9-, S10-, S11-MR, SH, SH12-M and other series products, which can be used for power distribution in various places such as industrial and mining enterprises, agriculture, and civilian buildings.

2. Dry-type transformers are classified according to the insulation medium as:

1) Encapsulated coil type dry-type transformers: mainly include SCB8, SC(B)9, SC(B)10, SCR-10 and other series products, suitable for high-rise buildings, commercial centers, airports, stations, subways, hospitals, factories and other places.
2) Non-encapsulated coil dry-type transformers: mainly include SG10 and other series products, suitable for high-rise buildings, commercial centers, airports, stations, subways, petrochemical industries and other places.