Product profile 1.Safe, less prone to be burned, prevention of fire, it can be directly installed in the load center.2.Free from maintenance, easy to be installed, low in operation cost.3.Sound in prevention of moist and can normally function under 100% of moisture.4.Low in loss dissipation, low in noise, low magnitude of partial discharge, loss assumption usuallylower than corresponding national standard by 5-10%.5.Sound in heat dissipation, strong in overloading capacity, and competent to overload 50% under thecold-air condition.6.Reliable in operation, completed temperature prevention control system, and secured operation oftransformer can be guaranteed.7.Small size, light weight, stable structure and powerful resisting against emergency short circuit. Usage environment 1.Lower than 1,000 meters in elevation.2.Environmental temperature: +40°C as maximum, -25°C as minimum.3.Relative humidity: daily average value not higher than 95%, monthly average value not higher than 90%.4.Magnitude of earthquake: no higher than 8 degrees.5.The site shall be free from risks of fire, explosion, severe pollution, chemical corrosion, and exces-sive vibration.