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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 21421.1-2021 |
Composite string insulator units for overhead lines with a nominal voltage greater than 1 000 V—Part 1：Standard strength classes and end fittings 标称电压高于1 000V的架空线路用复合绝缘子串元件 第1部分：标准强度等级和端部装配件 |
China National Standards Composite string insulator |
 English PDF |
| GB/T 21421.2-2014 |
Composite string insulator units for overhead lines with a nominal voltage greater than 1 000 V― Part 2：Dimensions and characteristics 标称电压高于1 000V 的架空线路用复合绝缘子串元件 第2部分：尺寸与特性 |
China National Standards Composite string insulator |
English PDF |
| GB/T 21421.1-2008 |
Composite string insulator units for overhead lines with a nominal voltage greater than 1000V - Part 1: Standard strength classes and end fittings 标称电压高于1000V架空线路用复合绝缘子串元件 第1部分：标准强度等级和端部附件 |
China National Standards Composite string insulator |
English PDF |
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