Accuracy and rated capacity (1) CT primary current error 100-120% of the rated current of 0.2 0.5 1310 Total 5 Cangzhou high voltage transformer, Class B for protection level. Output capacity S2e S2e run at rated capacity and Z2e when I2e = I2e2Z2e because I2e = 5A, 1A so S2e Z2e difference with a multiple, S2e can be used instead of the secondary impedance Z2e rated load unit is Ω. (2) PT U1 within the specified range, load rating Hengshui COSΦ when high voltage transformers, U1 = (0.85-1.15) Ue COSΦ = 0.8 when. Maximum voltage error. 0.2,0.5,1,3 divided into a total of four. In the electricity supply lines, the current difference from a few to tens of thousands Ann Ann, the voltage difference from a few volts to several million volts. Line current and voltage are high, such as direct measurement is very dangerous. In order to facilitate the secondary instrument measurement needs to be converted to a more unified current voltage converter using a transformer to play the role of transformer and electrical isolation. Different types of transformers (9) indicator majority of current and voltage table pointer Langfang high voltage transformer, so the majority of the current transformer secondary current is the ampere level (eg, 5, etc.). With the development of the times, the power measurement has been achieved mostly digitized high voltage transformer, and the sampled signal from the computer is generally milliamps (0-5V, 4-20mA, etc.). Micro current transformer secondary current mA level, mainly from the large transformer and a bridge between samples. Micro current transformer called "Instrument current transformer." ("Instrument current transformer" There is a layer of meaning in the laboratory using more current than the precision current transformer, generally used to expand the range of the instrument. Shijiazhuang high voltage transformer, Huayi Electric Power (certified), high voltage transformer provided by Xian Huayi power plant. Xi'an 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, the maximum limits to meet customer needs. In Huayi Electric Power leadership with the staff warmly welcome all inquiries negotiations to create electricity Huayi a better future.