Voltage transformer divided by the number of phases: the vast majority of products are high-voltage transformers, Dongguan Which single phase is good, because high-voltage transformer voltage transformer capacity is small, the plot is not the body Which Guangzhou high pressure transformer, three-phase high-pressure between the inner and outer insulating sleeve is difficult to meet the requirements, so only 3-15kV products sometimes using three-phase structure. DC transformer error measuring method: compare the difference between the number of turns of compensation only played high voltage transformer compensation Nanning Which is good, regardless of the amount of compensation and secondary load current size. Compensation turns generally only a few turns, turns the compensation should be calculated in the current low-end secondary impedance maximum, and current high-end secondary impedance minimum error. For high-precision micro-current transformer turns compensation compensation even if only one turn, would compensate for the excess. Then you can turn or fractional turns semi compensation. But the number of turns of the current transformer is based on a closed loop through the core window is computed, the number of turns of the current transformer is one turn one turn calculated half turn of absence. Semi-turns or fractional compensation must turn aids such as: double winding, two-core and so on. Which Kaifeng High Pressure transformers, 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.