JDZ9-6,10 series of indoor voltage transformer, which is the epoxy resin casting, with double insulated VT, fully enclosed post structure. It's rated frequency 50Hz or 60Hz, rated voltage of power system up to 6kV,10kV, for measuring current, electric energy and relay protection. Its primary and secondary windings are wound on the iron core, which is made of cold rolled silicon steel sheet. The secondary outlet is provided with a connecting cover, and a convenient outlet groove is fixed on the shield. The transformer' has a good anti pollution and moisture resistance. This voltage transformer conforms to IEC60044-2 and GB1207-2006 standard. This type of transformer is a single-phase, double-coil,epoxy resin vacuum casting structure.The primary and secondary windings are wound on the iron core,which is made of high quality cold rolled silicon steel sheet.The secondary outlet is provided with a connecting cover,and a convenient outlet groove is arranged on the shield.The transformer's performance of anti pollution and moisture resistance is good. Ambient temperature:-10ºC-+40ºC Relative humidity:The average humidity of a day should be no more than 95%. The average humidity of a month should be no more than 90%. Earthquake intensity: not exceed 8 degrees. Saturated vapor pressure the average pressure of a day should be no more than 2.2kPa; the average pressure of a month should be no more Than1.8Kpa; The height above sea level:≤1000 m (Except special requirements) It should be installed in the places without fire, explosion, serious filth, and chemical erosion and violent vibration.