Oil-immersed three-phase transformer

Abstract

The invention discloses an oil-immersed three-phase transformer, and the transformer comprises a transformer box, a cooling box, an air bellow, an element box, an oil tank, a damping sleeve, a bottomplate, a mounting frame and a forklift pipe; the right end of the transformer box is fixedly connected with the cooling box, the right end of the cooling box is fixedly connected with the air bellow,and the upper end of the transformer box is connected with the element box through bolts; an oil tank is fixedly connected to the left end of the voltage transformation box, a damping sleeve is fixedly connected to the lower end of the voltage transformation box, a damping rod is slidably connected into the damping sleeve, a bottom plate is fixedly connected to the lower end of the damping rod, amounting frame is fixedly connected to the lower end of the bottom plate, and a forklift pipe is fixedly connected to the lower end of the bottom plate. The left end of the transformer box is fixedlyconnected with a first heat dissipation plate, and the outer side of the transformer box is fixedly connected with a second heat dissipation plate. The invention relates to an oil-immersed three-phasetransformer. The oil-immersed three-phase transformer has the characteristic of damping and cooling a transformer box.

Description

technical field [0001] The invention belongs to the technical field of oil-immersed transformers, in particular to an oil-immersed three-phase transformer. Background technique [0002] The distribution transformer is one of the important equipment in the power supply and distribution system of industrial and mining enterprises and civil buildings. It reduces the 10(6)kV or 35kV network voltage to the 230 / 400V bus voltage used by users. This type of product is suitable for AC 50 (60) Hz, three-phase maximum rated capacity of 2500kVA (single-phase maximum rated capacity of 833kVA, generally not recommended to use single-phase transformers), and can be used indoors (outdoors) when the capacity is 315kVA and below Can be installed on a pole, the ambient temperature is not higher than 40°C, not lower than -25°C, the highest daily average temperature is 30°C, the highest annual average temperature is 20°C, the relative humidity is not more than 90% (ambient temperature is 25°C), ...

AI Technical Summary

Problems solved by technology

However, there are some problems with oil-immersed three-phase transformers at present. 1. This kind of small transformer is mostly used in industrial, mining and private building construction. The shaking and vibration of the transformer are very likely to cause the internal components to loosen. It is dangerous to connect the high-voltage electrodes after the components are loose. 2. When in use, the transformer has relatively high requirements on the ambient temperature. Timely adjustments in accordance with national regulations may easily cause the transformer to overheat and cause danger.

Images