Composite insulating sleeve

Composite insulating sleeve

China is a country with large electricity consumption. With the continuous increase of electricity consumption, the performance characteristics of the composite insulating casing is a great test, and it is also the direction of its scientific research. Today I mainly talk to you about its performance characteristics.

insulating sleeve

First, what is the processing material of the composite insulating sleeve?
Its processing materials are not as complicated as we think. The main processing materials are epoxy resin impregnated with electrical glass cloth through high temperature and hot pressing. The name in the insulation industry is FR-4 epoxy board. It has good insulation, high temperature resistance, easy processing, high mechanical strength and low water absorption. After repeated practice, it is the best choice for insulating sleeve materials.

Next, what is the working principle of the composite insulating sleeve?
It mainly uses gas and oil as insulating media. It is often used as insulation material in transformers. When the voltage is less than 35KV, the inner cavity between its conductor and porcelain sleeve is filled with transformer oil and acts as radial insulation. When the voltage is greater than 35KV, an insulating tube or a covered cable is sheathed on the conductor to strengthen the insulation.

Finally, a detailed explanation of the performance characteristics of the composite insulating bushing is given.

(1) Light weight. Its weight is only 1/7-1/10 of the porcelain insulating sleeve, which is greatly convenient for installation and saves a lot of manpower and material resources invisibly.
(2) Good toughness. Its bending strength is 5 to 10 times that of porcelain sleeves.
(3) Strong anti-pollution ability. Long-term work, there will be a lot of dust and oil stains stuck to the casing, and the composite casing is made of silicone rubber material, which is beneficial to the material’s anti-fouling ability. It is good for the later cleaning and testing.
(4) No regular cleaning is required. This has a lot to do with its material, does not require regular maintenance, cleaning, greatly saves money, and reduces the loss of power caused by maintenance.

As a name suggests, composite insulating sleeves are made of a variety of materials. If the interface is not well combined, it will be the weak link of insulation. But as long as we follow certain rules, I think insulation should be no problem.

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