Transformers Classification: By function: voltage transformer: If JDZ series current transformers: as filling material in accordance with points LZZB series: Oil transformer: Internal filled transformer insulating oil dry: according to internal filled epoxy closed or semi-closed transformer rating: JDZ as claw-shaped transformer voltage transformer, terminals and other parts exposed, the other part is closed. Fully enclosed transformer: the body is closed up. Voltage transformer with an iron core transformer. It mainly consists of a secondary coil, core and insulation components. When a voltage is applied to a high-voltage transformer winding U1, in the core generates a magnetic flux φ, according to the law of electromagnetic induction in the secondary winding generates a secondary voltage U2. Change the primary or secondary winding turns, can produce different primary voltage and secondary voltage ratio, which can be composed of different ratio of the voltage transformer. Voltage transformer converts the high voltage proportional to the low voltage transformer, namely 100V, voltage transformer primary side connected to the primary system, the secondary flanked measuring instruments, relay protection; mainly an electromagnetic (capacitive voltage transformer is widely used), while the non-magnetic type, such as electronic, photoelectric. Semi-hermetic transformers | transformer Xi'an | 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!