The early material used for transformer cores was soft wrought iron, which was easy to magnetize and demagnetize. In order to overcome the magnetic resistance loss caused by periodic magnetization in the magnetic circuit and the eddy currents generated by the cutting of the iron core due to alternating magnetic flux, the transformer core was made of iron wire bundles instead of whole pieces of iron. In recent years, countries around the world have been actively researching and producing energy-saving materials. The iron core materials of power transformers have developed into new energy-saving materials - amorphous magnetic materials, and amorphous alloy iron core transformers have emerged. Low loss and energy-saving power transformers are updated and upgraded products promoted by the country, which have the following characteristics:

高低壓開關柜

High and low voltage switchgear

A、性能先進、損耗低、節能效果顯著；

A. Advanced performance, low loss, and significant energy-saving effect;

B、工藝先進、產品結構合理；

B. Advanced technology and reasonable product structure;

C、該產品設計除采用原有成熟條件技術外，還采用了新型絕緣材料點膠紙，與傳統的絕緣材料相比提高了抗短路能力；

C. In addition to using mature technology, this product design also uses a new type of insulation material, adhesive tape, which improves its short-circuit resistance compared to traditional insulation materials;

D、高、低壓繞組均采用無氧銅繞制，圓筒式線圈層間及高、低壓間采用瓦楞紙板做油道，以保證產品質量；

D. Both high and low voltage windings are wound with oxygen free copper, and corrugated cardboard is used as oil ducts between the layers of cylindrical coils and between high and low voltage to ensure product quality;

E、該電力變壓器的鐵芯采用45°全斜接縫，不沖孔、不綁扎、階梯型工藝，使空載性能達到國際先進水平。

E. The iron core of this power transformer adopts a 45 ° fully inclined seam, non punching, non binding, and stepped process, ensuring that the no-load performance reaches the international advanced level.

高低壓開關柜

High and low voltage switchgear

其次開關柜的安全性。高低壓開關柜的存在，主要就是可以起到控制電壓，調節功率因數等作用。眾所周知，每一個場合里面都離不開電的加入，而電的電伏也分為大和小。不同的電氣所使用到的電流也是不一樣的。假如沒有高低壓開關柜的幫助，就有可能導致不安全因素發生。

Secondly, the safety of the switchgear. The existence of high and low voltage switchgear mainly serves to control voltage, regulate power factor, and other functions. As is well known, the addition of electricity is indispensable in every situation, and the voltage of electricity is also divided into large and small. The current used by different electrical systems is also different. If there is no help from high and low voltage switchgear, it may lead to unsafe factors.

所以在購買高低壓開關柜的時候，主要就是安全性要高。后是開關柜的安裝。在購買的時候，要咨詢一下是否提供上門安裝。因為高低壓開關柜體積都比較大，所以在安裝的時候盡量不要私自安裝，而是借助于專業人員的幫助，這樣才可以使得高低壓開關柜安全的安裝和放心的使用。

So when purchasing high and low voltage switchgear, the main thing is to have high safety. The installation of the switchgear follows. When making a purchase, it is important to consult whether on-site installation is available. Because the volume of high and low voltage switchgear is relatively large, it is recommended not to install it without authorization, but to rely on the help of professional personnel to ensure the safe installation and safe use of high and low voltage switchgear.