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Formula of non-linear resistor for high voltage surge arrester and manufacturing method thereof

A technology of non-linear resistors and manufacturing methods, which is applied in the direction of resistor manufacturing, varistors, varistor cores, etc., and can solve the problems that the resistor plate pressure ratio cannot meet the requirements and the square wave flow capacity is insufficient.

Active Publication Date: 2012-05-23
CHINA XD ELECTRIC CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention provides a non-linear resistor for high-voltage surge arresters in view of the problems that the voltage ratio of the resistors cannot meet the requirements and the square wave flow capacity is insufficient in the assembly of 750kV / 1000kV UHV surge arresters in the application of traditional resistors. Formulation and its manufacturing method

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  • Formula of non-linear resistor for high voltage surge arrester and manufacturing method thereof
  • Formula of non-linear resistor for high voltage surge arrester and manufacturing method thereof
  • Formula of non-linear resistor for high voltage surge arrester and manufacturing method thereof

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Embodiment Construction

[0012] Instance group 1:

[0013] This implementation example adopts the formula of non-linear resistor sheet for high voltage arrester, and its composition is: 3.1~4.8wt% bismuth oxide, 2.5~4.6wt% antimony oxide, 1.2~2.6wt% cobalt oxide, 0.7~1.5wt% Silicon oxide, 0.5-0.9wt% manganese oxide, 0.7-1.3wt% chromium oxide, 0.3-0.9wt% nickel oxide, 0.04-0.13wt% boron glass powder and 0.01-0.06wt% aluminum oxide additive; the rest is the main component of zinc oxide.

[0014] This implementation example carries out batching and manufacturing according to the formula of the above non-linear resistor sheet, and the specific manufacturing method includes the following steps:

[0015] First, weigh the components of the additive and the main component of zinc oxide, then put the components of the additive into a ball mill tank, mix them through ball milling, dry them, and grind them, then put the obtained mixture into a corundum mullite sagger at 810°C After calcination for 1 hour, cool...

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Abstract

The invention relates to the field of manufacturing high voltage metal oxide surge arresters and discloses a formula of a non-linear resistor for a high voltage surge arrester and a manufacturing method thereof, which are applicable to the metal oxide surge arresters for protecting high voltage power devices, in particular to the metal oxide surge arresters of ultra-high voltage AC power transmission and transformation systems of 750kV and 1000kV. The formula comprises additives consisting of the following components by weight percent: 3.1-4.8% of bismuth oxide, 2.5-4.6% of antimony oxide, 1.2-2.6% of cobalt oxide, 0.7-1.5% of silicon oxide, 0.5-0.9% of manganese oxide, 0.7-1.3% of chromium oxide, 0.3-0.9% of nickel oxide, 0.04-0.13% of boron glass powder and 0.01-0.06% of aluminum oxide.The balance is a main component-zinc oxide.

Description

technical field [0001] The invention relates to the field of manufacturing high-voltage metal oxide arresters, in particular to a formulation and manufacturing method of a non-linear resistor for high-voltage arresters, which is suitable for metal oxide arresters for high-voltage power equipment protection, especially for 750kV and 1000kV UHV AC Metal oxide arresters for power transmission and transformation systems. Background technique [0002] In recent years, with the rapid development of domestic power transmission and transformation technology, the transmission voltage, transmission distance and transmission capacity of transmission lines have been continuously improved, and 750kV and 1000kV UHV large-capacity transmission lines have also begun large-scale construction in China. . However, the square wave flow capacity and the pressure ratio of resistors produced by the original production technology and process of resistors cannot fully meet the assembly requirements...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01C7/12H01C7/112H01C17/30C04B35/453C04B35/622
Inventor 谢清云韩锦晖李刚王锋
Owner CHINA XD ELECTRIC CO LTD
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