Voltage transformer divided by voltage conversion principle: electromagnetic voltage transformer: according to the principle of electromagnetic induction voltage transformation, completely similar principle and basic structure and transformers, multi-country adoption in voltage level and below; Capacitor Voltage Transformer: by capacitive voltage divider , a compensation 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: by photoelectric transformation principle in order to achieve high-voltage transformer voltage conversion Baotou, still under development. Transformer burned reasons: 1, when the voltage transformer between the low side turn and phase short circuit, low-voltage high-voltage transformer fuse insurance yet, due to the rapid increase of the magnetizing current high-voltage transformers Handan, high pressure pipe fuse is blown fuse or burn mutual device. 2, when the qualifying 10kV single-phase ground, the voltage transformer primary side voltage is relatively non-fault root of 3 times the normal voltage. Voltage transformer core saturation quickly, exciting current sharply increased, so that the fuse is blown. 3, since the capacitive and inductive elements of the power network parameters contained, in particular the inductance element with the ferromagnetic core, the magnetic resonance caused by unfavorable parameter combination. 4, the flow through the voltage transformer primary winding of zero-sequence current increases (relative to the excessive ground current system) Harbin high voltage transformer, long-running, the thermal effect generated by the zero-sequence transformer will cause voltage transformer insulation damage, burst; 5, the system nonlinear oscillations (arc grounding overvoltage), greatly exacerbated the damage process system voltage transformer; 6, voltage transformer itself is poor cooling conditions. Huayi Electric Power (Figure), Handan high voltage transformers, high voltage transformers supplied 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!