Factors affecting transformer error and error (1) CT excitation error due to the inherent losses and magnetic saturation effects high voltage transformer, I1 and measured values ??KNI2 both numerical and phase differences. Respectively ratio error and angle error. Error factors affect the primary current I1; I1 is small when the error is large. So when I1 = (100-120%) I1e CT error is minimized. Dimensioning and structure; secondary load impedance; power factor; (2) PT error because of the excitation current and the impedance magnitude and phase measurements are error. The same as the ratio error and angle error. Error factors core structure dimensions; the secondary side load; power factor; the primary voltage. Should vary the power factor and a secondary side voltage is limited within a certain range. Xian Huayi power plant in Langfang high voltage transformer innovation, quality of trust oriented purpose, relying on improving the market system Shijiazhuang high voltage transformers, flexible trade mechanism, to provide customers with high quality products Hengshui high voltage transformer, complete and timely delivery and good after-sales service, the majority of users. Leading products 6-110kV voltage vacuum circuit breaker, low voltage switch cabinet, box-type substation, power transformers, voltage and current transformers, high-voltage fuse, load switch, disconnecting switch, zinc oxide surge arresters, harmonic elimination, wall units tube, post insulators, high voltage SF6 circuit breakers, transformers neutral point discharge gap and spare parts, etc., have reached the advanced level. Xian Huayi power plant staff warmly welcome to visit guidance, friendship and cooperation. Cangzhou high voltage transformers | high voltage transformers | Huayi electricity provided by Xian Huayi power plant. Xian Huayi power plant (www.xahy.com) strong, credible, in Xi'an high-voltage circuit breakers and other industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Huayi power and you hand into the brilliant, for a better future!