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Research on transformer casing development
2021-11-18 10:52:27

With the development of China's power industry, the power supply has increased year by year, and power transformers have gradually developed toward high voltage and large capacity. At the same time, due to the improvement of manufacturing technology, the insulation distance of various parts of the transformer product is gradually reduced. Thus, as a capacitor casing of the transformer accessory product, there are strict requirements on its appearance size.

In order to meet the market demand and catch up with the advanced level at home and abroad, our company has also modified the existing products. The modified product has the characteristics of beautiful appearance, small size and light weight while ensuring product performance, maintaining assembly size and oil immersion length.

Structure: The casing adopts the oil-paper capacitor core as the main insulation, the cable-carrying current-carrying method and the integral connection and the main seal realized by the casing using the axial pressing force generated by the multiple sets of pressure springs. The 252KV bushing also has a complementary snap-in structure at the joint between the porcelain piece and the connecting sleeve to enhance the joint sealing strength of the joint. The oil pillow and the connecting sleeve of the bushing are all cast aluminum alloy to reduce hysteresis and eddy current loss. Reduce fever and temperature rise. The connecting sleeve is provided with a tapping device for measuring tan and C, a sucking valve for extracting the oil sample inside the sleeve, and a venting plug for releasing the air at the top of the transformer tank.

The outer casing of the casing is changed to a straight porcelain piece, and the thickness of the umbrella is thinned, so that the appearance of the product is beautiful. The umbrella can still be used with large and small umbrellas to meet various pollution and insulation levels and insulation levels.