Electric transformer is a static electrical device that is used to turn the AC voltage (current) of a value (current) into a device with the same frequency or several values ??(current).
Power transformer principle
It mainly uses the law of Faraday electromagnetic induction.The electromagnetic induction refers to this phenomenon that the changes in magnetic flux leads to the occurrence of inductive electromotive momentum.In other words, the conductor can be placed in the changing magnetic flux, and the conductor can generate inductive electromotives (can also be said to be voltage). If the conductor is a closed loop, the induction electromotone energy drives the electronic orientation in the conductor to form an inductive current.
Electric transformer capacity
Electric transformer is the most commonly used power transmission and distribution in our lives, and it is also a necessary device for user power distribution.During the power conveying process, it reduces voltage to better use of voltage at all levels and meets the demand for electricity.Electric transformers can also reduce conveying loss and achieve energy saving effects.
The role of the power transformer
The unique function of the power transformer is that other electronic devices cannot be replaced. He generally has two effects. One is to send high -voltage current to the small land in each relatively small land, and the other is to convert the conversion of the high -voltage current transmitted intoLow -voltage current, and then supply the family.He is generally used to issue power plants and change power plants. This is their commonly used electronic equipment, because the use of high -voltage transformers will reduce large power loss, so that it will save a lot of costs for our country.If there is no high -voltage transformer, we will consume one -tenth of the power consumption of each year.
Power transformer selection guidance
When selecting the power transformer, the principle to follow is to choose the right rated value.Under normal circumstances, the investment cost of the power transformer with a large rated value is high, and the investment cost with low rated value is low.When selecting a transformer, you should choose as needed.If the selected capacity is too large, it will cause disadvantages such as large power loss and high investment costs. Not only will it not bring economic benefits, but it will also waste energy.Conversely, if the rated value is too small, the long -term high load of the transformer brings irreparable damage to the device.Therefore, when choosing a transformer, it should be selected as needed, and it will bring losses if it is too large.
Power transformer price
There are many ways to classify the classification of transformers. According to the type, it is divided into oil immersion and dry type. According to the voltage level, it is divided into voltage voltage and antihypertensive transformers. It is divided into transformer, factory, variable frequency, etc. according to the use.To refer to the price of each manufacturers product, generally dry type is more expensive than oily, and the price is smaller than the price of the capacity. Special transformers are higher than ordinary power transformers.The higher the price, the higher the price.
Electric transformer model
Classified by cooling method: dry (auto -cold) transformer, oil immersion (auto -cold) transformer, fluoride (evaporating cooling) transformer.Classified by moisture -proof method: open transformer, seal transformer, seal transformer.Classified by iron core or coil structure: core transformer (inserted iron core, C -type iron core, iron oxygen core), shell transformer.

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