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April 21, 2019
As per different structures, function, and some special characteristics,distribution transformer can be classified into different types.
It can be divided into three-phase transformer and single-phase transformer.
In three-phase power system, three-phase transformer is generally used. When the capacity is too large and limited by transportation conditions, three single-phase transformers can also be used to form transformer groups in three-phase power system.
It can be divided into two-winding transformer and three-winding transformer.
The usual transformers are double winding transformers, that is, there are two windings on the core, one is the original winding, the other is the secondary winding.
Three-winding transformer is a transformer with larger capacity (more than 5600 KVA), which is used to connect three different voltage transmission lines. In special cases, Satons transformers with more windings are also used.
It can be divided into core transformer and shell transformer. If the winding is wrapped around the core, it is a core transformer.If the core is wrapped around the winding, it is a shell transformer. But they are slightly different in structure and have no essential difference in principle. Power transformers are all iron core type.
It can be divided into oil-immersed transformer and dry-type transformer. In order to strengthen the insulation and cooling conditions, the transformer core and winding are immersed together in the tank filled with transformer oil. In special cases, such as street lamps and mine lighting, dry transformers are also used.
1. Non-closed oil-immersed transformer: mainly S8, S9, S10 series products, widely used in industrial and mining enterprises, agriculture and civil buildings.
2. Closed oil-immersed transformer: mainly S9, S9-M, S10-M series products, mostly used in petroleum and chemical industries where there are many oil pollution and chemical substances.
3. Sealed oil-immersed transformer: mainly BS9, S9-, S10-, S11-MR, SH, SH12-M series products, can be used for power distribution in industrial and mining enterprises, agriculture, civil buildings and other places.
Oil filled type transformer need cooler to cool the transformer oil. The cooler can be CORRUGATED FIN WALL weld on transformer tank body(which produced by JTFY corrugated transformer tank wall production line). Also, can be RADIATORS connect with transformer tank box.
folded corrugated finwall by distribution transformer tank cooler wall forming machine
In addition, there are special Distribution transformer for various special purposes. For example, high voltage transformers for testing, transformers for electric furnaces, transformers for welding and transformers for controlled silicon circuits are used for measuring instrument voltage transformers and current transformers.
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