Voltage transformer divided by voltage conversion principle: electromagnetic voltage transformer: voltage conversion according to the principle of electromagnetic induction, principle and basic structure and high voltage transformer transformer completely similar Jilin, China's more at and below voltage uses; capacitor voltage transformers: by capacitive divider, compensating reactor, intermediate transformers, protective devices and the carrier damper gap, etc., used in the neutral grounding system for voltage measurement, power measurement, relay protection and communication with the carrier; photoelectric voltage transformer control: by photoelectric conversion principle to achieve voltage conversion, are still under development. DC transformer error measuring method: 1.5 ~ 3V battery to the positive terminal of the transformer primary winding on L1, L2 then negative, the secondary side of the transformer connected K1 milliammeter Handan positive high voltage transformer, negative then K2, pick After a good line Harbin high voltage transformers, K closed milliammeter pointer positive bias, pull milliammeter pointer after negative bias, indicating that the transformer connected to the battery positive terminal head and connected to the positive terminal milliammeter ends the same polarity. 1.K1 the same polarity that transformer is minus polarity. Contrary to the above, such as pointers to swing plus polarity. High voltage transformers | Huayi Electric Power | Qinhuangdao high voltage transformer provided by Xian Huayi power plant. "High-voltage vacuum circuit breakers, low voltage switch cabinet, box-type substation, power transformers, voltage and" preferred Xian Huayi power plant (2), the company is located: Xi'an High-tech Zone Lu Xinan section II, over the years, China instrument of power to provide customers with the best quality service, Contact: Mr. Welcome to the new and old customers call, letter, visit the guide, business negotiations. Huayi Electric Power expect to be your long-term partner!