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:

高低压开关柜

High and low voltage switchgear

A、性能先进、损耗低、节能效果显著；

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

B、工艺先进、产品结构合理；

B. Advanced technology and reasonable product structure;

C、该产品设计除采用原有成熟条件技术外，还采用了新型绝缘材料点胶纸，与传统的绝缘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、低压绕组均采用无氧铜绕制，圆筒式线圈层间及高、低压间采用瓦楞纸板做油道，以保证产品质量；

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、该电力变压器的铁芯采用45°全斜接缝，不冲孔、不绑扎、阶梯型工艺，使空载性能达到国际先进水平。

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.

高低压开关柜

High and low voltage switchgear

其次开关柜的安全性。高低压开关柜的存在，主要就是可以起到控制电压，调节功率因数等作用。众所周知，每一个场合里面都离不开电的加入，而电的电伏也分为大和小。不同的电气所使用到的电流也是不一样的。假如没有高低压开关柜的帮助，就有可能导致不安全因素发生。

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.

所以在购买高低压开关柜的时候，主要就是安全性要高。后是开关柜的安装。在购买的时候，要咨询一下是否提供上门安装。因为高低压开关柜体积都比较大，所以在安装的时候尽量不要私自安装，而是借助于专业人员的帮助，这样才可以使得高低压开关柜安全的安装和放心的使用。

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.