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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/Z 17215.651-2022 |
Electrical Measurement Data Exchange DLMS/COSEM Components Part 51: Application Layer Protocol {译} 电测量数据交换 DLMS/COSEM组件 第51部分：应用层协议 |
China National Standards 51: |
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| GB/T 39673.51-2020 |
Home and building electronic systems (HBES) and building automation and control systems (BACS) —Part 51: EMC requirements, conditions and test set-up 住宅和楼宇电子系统（HBES）及楼宇自动化和控制系统（BACS） 第51部分：EMC要求、条件和测试布置 |
China National Standards 51: |
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| GB/T 18802.351-2019 |
Components for low-voltage surge protective devices－Part 351:Performance requirements and test methods for telecommunications and signalling network surge isolation transformers (SIT) 低压电涌保护器元件 第351部分：电信和信号网络的电涌隔离变压器（SIT）的性能要求和试验方法 |
China National Standards 51: |
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| GB/T 18802.351-2019 |
Components for low-voltage surge protective devices－Part 351:Performance requirements and test methods for telecommunications and signalling network surge isolation transformers (SIT) 低压电涌保护器元件 第351部分：电信和信号网络的电涌隔离变压器（SIT）的性能要求和试验方法 |
China National Standards 51: |
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| GB/T 18978.151-2014 |
Ergonomics of human-system interaction―Part 151: Guidance on world wide web user interfaces 人-系统交互工效学 第151部分：互联网用户界面指南 |
China National Standards 51: |
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| GB/T 14598.151-2012 |
Measuring relays and protection equipment - Part 151: Functional requirements for over/under current protection 量度继电器和保护装置 第151部分：过/欠电流保护功能要求 |
China National Standards 51: |
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| GB/T 16608.51-2012 |
Electromechanical all-or-nothing relays - Part 51: Blank detail specification - Electromechanical all-or-nothing telecom relays of assessed quality - Non-standardized types and construction 有或无机电继电器 第51部分：空白详细规范 电信用有质量评定的有或无机电继电器 非标准类型和结构 |
China National Standards 51: |
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| GB/T 16895.18-2010 |
Electrical installations of buildings - Part 5-51: Selection and erection of electrical equipment - Common rules 建筑物电气装置 第5-51部分：电气设备的选择和安装 通用规则 |
China National Standards 51: |
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| GB/T 16656.51-2010 |
Industrial automation systems and integration - Product data representation and exchange - Part 51: Intergreted generic resource: Mathematical representation 工业自动化系统与集成 产品数据表达与交换 第51部分：集成通用资源：数学表达 |
China National Standards 51: |
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| GB/T 2951.51-2008 |
Common test methods for insulating and sheathing materials of electric and optical cables - Part 51:Methods specific to filling compounds - Drop point - Separation of oil - Lower temperature brittleness - Total acid number - Absence of corrosive component 电缆和光缆绝缘和护套材料通用试验方法 第51部分：填充膏专用试验方法 滴点 油分离 低温脆性 总酸值 腐蚀性 23℃时的介电常数 23℃和100℃时的直流电阻率 |
China National Standards 51: |
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| GB/T 15972.51-2008 |
Specifications for optical fibre test methods - Part 51: Measurement methods and test procedures for environmental characteristics - Dry heat 光纤试验方法规范 第51部分: 环境性能的测量方法和试验程序 干热 |
China National Standards 51: |
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| GB 16895.20-2003 |
Electrical installations of buildings--Part 5: Selection and erection of electrical equipment--Chapter 55: Other equipment--Section 551: Low-voltage generating sets 建筑物电气装置 第5部分:电气设备的选择和安装 第55章:其他设备 第551节:低压发电设备 |
China National Standards 51: |
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