Toggle switch to talk about two voltage levels of working circuit

1. Three-winding transformer: generally used in regional substations of power system, connecting three voltage levels.

Autotransformer: used to connect power systems with different voltages. It can also be used as an ordinary boost or drop.

Toggle switch is used for internal components of high-voltage power transformer.

2. Amorphous alloy transformer: Amorphous alloy iron-core transformer is a new type of magnetic conductive material, with a reduction of no-load current of about 80 [%]. It is a distribution transformer with relatively ideal energy-saving effect at present, especially suitable for rural power grids and developing areas where the load rate is low.