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Transformer

A transformer is a device that uses the principle of electromagnetic induction to change the voltage of alternating current. Its main components are the primary coil, secondary coil, and core (magnetic core). Its main functions include: voltage transformation, current transformation, impedance transformation, isolation, and voltage stabilization (magnetic saturation transformer), among others.

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变压器

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A transformer is a device that uses the principle of electromagnetic induction to change the voltage of alternating current. Its main components are the primary coil, secondary coil, and iron core (magnetic core). Its main functions include: voltage transformation, current transformation, impedance transformation, isolation, and voltage stabilization (magnetic saturation transformer), etc.
Transformers can be classified by purpose into: distribution transformers, power transformers, fully sealed transformers, combined transformers, dry-type transformers, oil-immersed transformers, single-phase transformers, electric furnace transformers, rectifier transformers, reactors, anti-interference transformers, lightning protection transformers, box-type substation test transformers, corner transformers, large current transformers, excitation transformers, etc.
Transformers are the basic equipment for power transmission and distribution, widely used in industries, agriculture, transportation, urban communities, and other fields. In our country, there are about 17 million transformers in operation, with a total capacity of about 11 billion kilovolt-amperes. Transformer losses account for about 40% of the power losses in transmission and distribution, indicating significant energy-saving potential. To accelerate the promotion and application of efficient energy-saving transformers, improve the efficiency of energy resource utilization, and promote green, low-carbon, and high-quality development, in January 2021, the Ministry of Industry and Information Technology, the State Administration for Market Regulation, and the National Energy Administration jointly formulated the "Transformer Energy Efficiency Improvement Plan (2021-2023)".

 

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