Transformers first appeared in the 19th century. With the development of power industry in Jilin high voltage transformers, voltage transformers and accurate level has greatly improved, but also the development of a number of special transformers, such as voltage, current hybrid transformer, DC current transformer, high accuracy the ratio of the current and voltage ratio is Harbin high voltage transformers, high current laser-type current transformer, electronic circuit compensation transformer, high voltage transformer photovoltaic systems, and SF6 enclosed Switchgear (GIS) in the Voltage, current transformers. In the power industry in Dalian high voltage transformer, to develop what voltage level and scale of the power system, the need to develop the appropriate transformer voltage level and accuracy for measuring electric power system protection and control needs. Xian Huayi power plant is the high-voltage electrical equipment backbone enterprises, leading products 6-110kV high voltage vacuum circuit breakers, low voltage switch cabinet, box-type substation, power transformers, voltage and current transformers, high-voltage fuse, load switch, isolation switch, zinc oxide surge arresters, harmonic elimination and so on. Qinhuangdao high voltage transformer, Huayi Electric Power (certified), high voltage transformers supplied by Xian Huayi power plant. Xian Huayi power plant (www.xahy.com) is a leader in Xi'an, high voltage circuit breakers, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Huayi power in leadership with the staff warmly welcome all inquiries negotiations to create electricity Huayi a better future.