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How to choose the transformer capacity?

2021-02-23

   Transformer selection cannot be large or small. You have to choose the capacity of the transformer, as well as the use situations. So Let's take a look at how to choose a suitable transformer capacity.

 

  When choosing a transformer, there is a very important data that is the load factor. The ratio of the actual load carried by the transformer to the rated power of the equipment is called the load factor of the transformer. For loads, the concept of load factor is the probability of the load being used at the same time, also called the need factor or the simultaneous factor, which is the probability of the equipment being used at the same time at the same time. The total load is 300kw, but there is a probability that they are used at the same time, and this probability is the load factor. It is impossible to always use them at the same time, and the coefficient is 1 if they are used at the same time. Of course, you can calculate it yourself according to the actual situation, and the power factor is 0.80.

  

     Transformer is a device that uses Faraday's law of electromagnetic induction to increase or decrease voltage. The transformer usually contains two or more coils. The main purpose is to raise and lower the voltage of alternating current, change impedance and separate circuits.

 

Transformers can be divided into distribution transformers, power transformers, hermetic sealed transformers, combined transformers, dry type transformers, oil immersed transformers, single-phase transformers, furnace transformers, rectifier transformers, etc.

 

To make the circuit stable, it is necessary to choose a suitable transformer. Here are some ways in the selection of transformers:

  1. First of all, you must clarify the purpose, whether you want to use it to step up or step down.

  2. To know the number of phases of the power supply, whether it is single-phase or three-phase.

  3. According to the use environment, choose the cooling method of the transformer.

  4. According to the actual use and budget, choose the coil material, whether it is copper wire or aluminum wire.

  5. Determine the rated parameters of the transformer, including rated voltage, rated current, and rated capacity.

  Only when you have the answers to the above points, can you buy a suitable transformer.


  The transformers from R&D, design, purchase of spare parts, manufacturing and processing, aging testing, life testing, product packaging and after-sales service , Its complicated process is closely related to the quality of the transformer. If you want to know about purchasing a transformer, or if you have any questions about the transformer, please contact us, Varelen Electric Co.,Ltd.


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