10kV and below gapless metal oxide arrester and manufacturing method for same

Abstract

The invention discloses a 10kV and below gapless metal oxide arrester and a manufacturing method for the same. The 10kV and below gapless metal oxide arrester comprises upper and lower binding posts (1), a core body and a rubber sheath (3), wherein the core body is manufactured by wrapping a core group sequentially consisting of an upper electrode (2), a plurality of stacked zinc oxide varistors (5) and a lower electrode (6) from top to bottom with an alkali-free glass cloth tape (4) and performing baking; the upper electrode (2) at the upper end of the core body and the lower electrode (6) at the lower end are connected with the binding posts (1) respectively; the rubber sheath (3) on the outer lateral surface of the core body is compressed-molded at one time from mixed silicone rubber. The 10kV and below gapless metal oxide arrester is convenient to manufacture, high in sealing performance and low in partial discharge, and the performance is substantially kept unchanged in a boiling test consistent with a national standard. Therefore, the stability of the arrester in use is ensured, and the service life is prolonged. The product smoothly meets each requirement in standard GB11032-2000.

Description

technical field [0001] The invention relates to the field of electric power, in particular to a 10kV and below gapless metal oxide lightning arrester installed on electrical equipment and facilities as a device for limiting overvoltage and lightning protection and a manufacturing method thereof. Background technique [0002] For the composite metal oxide surge arresters produced in the same industry in China, the packaging method of the core is basically adopted, and the insulating frame outside the core is made of epoxy resin tubes, and the core group is assembled inside to form the core. [0003] The above-mentioned core body manufacturing method has many problems in terms of sealing and partial discharge, especially in terms of sealing performance. The upper and lower ends of the epoxy resin tube are prone to sealing problems, which will cause the arrester to be damp. The development of this composite metal oxide Lightning arresters are very necessary. Contents of the i...

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Problems solved by technology

[0003] The above-mentioned core body manufacturing method has many problems in terms of sealing and partial discharge, especially in terms of sealing performance. The upper and lower ends of the epoxy resin tube are prone to sealing problems, which will cause the arrester to be damp. The development of this composite metal oxide Lightning arresters are very necessary

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