The distribution transformer is an important piece of equipment in the power supply and distribution systems of industrial and mining organizations, as well as civil buildings. It converts the 10 (6) kV or 35kV network voltage to the 230/400V bus voltage required by consumers. This sort of product is suited for AC 50 (60) Hz, three-phase maximum rated capacity 2500kVA (single-phase maximum rated capacity 833kVA; single-phase transformers are generally not recommended), and can be used indoors (outdoors) with a capacity of 315kVA or less. Can be fixed on a pole, the ambient temperature is not greater than 40℃ and not lower than -25℃, the highest daily average temperature is 30℃, the maximum yearly average temperature is 20℃, the relative humidity does not exceed 90% (ambient temperature 25℃), altitude altitude No more than 1000 metres. If it is inconsistent with the foregoing conditions of use, suitable quota adjustments must be made.