High Quality Oil Immersed Medium And High Voltage Power Transformer

‌Product Introduction

Oil-immersed medium and high voltage power transformer‌ refers to a transformer whose windings use transformer oil as the insulating medium, and is mainly used in medium and high voltage power transmission and distribution systems. Its basic working principle is to use the principle of electromagnetic induction to cool and insulate through transformer oil.

Technical parameters and use conditions of oil-immersed transformers
Oil-immersed medium and high voltage power transformers are suitable for AC 50Hz or 60Hz, with a maximum rated capacity of up to 2500kVA for three-phase and 833kVA for single-phase. They can be used indoors or outdoors, and can be installed on poles when the capacity is 315kVA and below. Its use conditions include an ambient temperature not higher than 40℃ and not lower than -25℃, a maximum daily average temperature of 30℃, a maximum annual average temperature of 20℃, a relative humidity not exceeding 90% (at an ambient temperature of 25℃), and an altitude not exceeding 1000 meters.

Structural characteristics of high-voltage transformers
The structure of an oil-immersed transformer includes iron core, winding, oil tank, oil pillow, respirator, explosion-proof pipe (pressure relief valve), radiator, insulating sleeve, tap changer, gas relay, thermometer and oil purifier and other main components. Transformer oil is mainly used for cooling and insulation. It has good thermal conductivity and dielectric strength, can effectively isolate the electrical contact between the winding and the casing, and take away the heat generated by the flow of current.

Application scenarios of oil-immersed transformers
Oil-immersed transformers are widely used in power supply and distribution systems of industrial and mining enterprises and civil buildings to reduce the network voltage of 10kV or 35kV to the 230/400V bus voltage used by users. Especially in the field of new energy, such as wind and solar power stations, 35kV oil-immersed transformers are an ideal choice due to their light weight, good heat dissipation performance and relatively low cost.

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