Voltage transformer (Potential transformer called PT, Voltage transformer also referred VT) and the transformer is very similar, are used to convert the voltage on the line. But the purpose of converting the voltage transformer is to supply electric power, so large capacity, usually in kVA or MVA for the unit; and the purpose of converting the voltage transformer voltage is mainly used for measuring instruments and relays power supply protection device, used to measure line voltage, power and energy, or to protect valuable equipment lines, motors and transformers in the line fails, the voltage transformer high-voltage transformer capacity is small, usually only a few VA, dozens of VA, not more than one maximum kVA. Voltage transformer and the transformer is very similar basic structure, it also has two windings, a primary winding called a called a secondary winding. Two windings are housed in or around the core. Two windings and between windings and core have insulation that has electrical isolation between the two windings and windings and core. At runtime voltage transformer, the primary winding N1 and the line coupling voltage transformer, the secondary winding N2 and the meter or relay connection. Therefore, when measuring the voltage of the high voltage on the way, even though a high voltage, but the second is a low pressure to ensure the safety of the operator and instrument. High voltage transformers | Harbin Transformers | Xi'an by the Xi'an high Huayi power plant. Xian Huayi Electric Power Equipment Factory (www.xahy.com) strong, credible, in the Xi'an high-voltage circuit breakers and other industries has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Huayi electricity into the brilliant and you work for a better future!