The transformer is a use of the electromagnetic mutual induction voltage, current and impedance transformation devices. The main function of the transformer: Voltage transformation; current transformation, impedance transformation; isolation; regulator (magnetic saturation transformer). 

The classification of commonly used transformer can be summarized as follows: 

(A) cooling mode: 

(1) dry-type transformers: to rely on air convection, the natural cooling or increase the fan cooling, and more for high-rise buildings, high-speed charge site electricity and local lighting, electronic circuits and other small capacity transformers. 

(2) oil-immersed transformer: to rely on oil as the cooling medium, such as oil-immersed self-cooled, air-cooled oil-immersed, water-cooled oil-immersed, forced oil circulation. 

(B) the winding form of: 

(1) two-winding transformer: used to connect the power system voltage levels. 

(2) three-winding transformer: general for regional substations in the power system, connecting three voltage levels. 

(3) auto-transformer: used to connect different voltage power system. You can also use as a common step-up or down transformer. 

(C) core in the form: 

(1) core-type transformer: used for high-voltage power transformers. 

Amorphous alloy transformer

(2): amorphous alloy core transformer with a new type of magnetic material, no-load current is decreased by about 80%, is the ideal energy-saving effect of distribution transformers, especially for the rural power grid and developing regions load lower rate.

(3) shell-type transformers: special transformers for large currents, such as furnace transformers, welding transformers; power transformers for electronic equipment and television, radio, etc.. 

The new terminal of the transformer, has been widely used in the world of electrical and electronic engineering industries: large transformers. Transformer terminals, structural design, taking into account the wiring, screws connect the characteristics of a solid, you can quickly and easily install on the 2X10mm the rail. Products designed to meet the IEC 60947-7-1 international standard.