Transformer

Transformers are devices that utilize the principle of electromagnetic induction to alter alternating voltage, primarily consisting of primary coils, secondary coils, and an iron core (magnetic core). Their main functions include voltage transformation, current transformation, impedance transformation, isolation, and voltage stabilization (magnetic saturation transformers).

Transformers can be categorized by their applications, including: distribution transformers, power transformers, fully sealed transformers, modular transformers, dry-type transformers, oil-immersed transformers, single-phase transformers, furnace transformers, rectifier transformers, reactors, anti-interference transformers, lightning protection transformers, transformer testing transformers, corner transformers, high-current transformers, and excitation transformers, etc.

Transformers are fundamental equipment for power transmission and distribution, widely used in industries, agriculture, transportation, and urban communities. There are approximately 17 million transformers in operation in our country, with a total capacity of about 11 billion kilovolt-amperes. Transformer losses account for about 40% of the power losses in transmission and distribution, presenting significant potential for energy savings.