DC transformer error measuring method: 1.5 ~ 3V battery to the positive terminal of the transformer primary winding to the high voltage transformer Which Nanning L1, L2 then negative, the secondary side of the transformer connected milliammeter K1 positive and negative poles K2, wired high-voltage transformer after Dongguan Which is good, close to K mA table pointer positive side, opened the milliammeter pointer after a negative bias, indicating that the transformer connected to the battery positive terminal connected to the head and cents An end table is the positive terminal of the same polarity. 1.K1 the same polarity that transformer is minus polarity. Contrary to the above, such as pointers to swing plus polarity. Voltage transformer (PT) and current transformer (CT) is important electrical power system equipment, which bears the isolation between the high volume and high pressure, low pressure system to the low amount of conversion functions. The wiring is correct or not, Fuzhou high voltage transformer Which is good, normal work protection system, measurement, monitoring and other equipment, has an extremely important significance. When newly installed PT, CT commissioning or replace PT, CT secondary cable, the polarity test method test PT, CT wiring correctness has been essential protection staff working procedures. Which Nanning 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!