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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 20139.2-2017 |
Electrical insulation systems—Thermal evaluation of modifications to an established electrical insulation system(EIS)—Part 2:Form-wound EIS 电气绝缘系统 已确定等级的电气绝缘系统（EIS）组分调整的热评定 第2部分：成型绕组EIS |
China National Standards established |
 English PDF |
| GB/T 20139.1-2016 |
Electrical insulation systems—Thermal evaluation of modifications to an established electrical insulation system(EIS)—Part 1: Wire-wound winding EIS 电气绝缘系统 已确定等级的电气绝缘系统（EIS）组分调整的热评定 第1部分：散绕绕组EIS |
China National Standards established |
English PDF |
| GB/T 20139-2006 |
Electrical insulation systems - Thermal evaluation of modifications to an established wire-wound EIS 电气绝缘结构-对已确定等级的散绕绕组绝缘结构进行组分调整的热评定方法 |
China National Standards established |
English PDF |
| GB/T 7623-1987 |
Automatic answering equipment and/or parallel automatic calling equipment on the general switched telephone network， including procedures for bling of echo control devices for both manually and automatically established calls 在电话自动交换网上的自动应答设备和(或)并行自动呼叫设备， 包括人工和自动建立呼叫时使回波控制装置停止工作的规程 |
China National Standards established |
English PDF |
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