Browse Standards

高压直流隔离开关和接地开关

High-voltage direct-current disconnectors and earthing switches

800kV直流输电用油浸式换流变压器技术参数和要求

Specification and technical requirements of oil-immersed convertor transformers for 800kV DC applications

旋转电机 圆锥形轴伸

Conical shaft extension for rotating electrical machines

爆炸性环境 第20部分：设备保护级别（EPL）为Ga级的设备

Explosive atmospheres - Part 20: Equipment with equipment protection level (EPL) Ga

太阳能电池用锗单晶

Germanium single crystal for solar cell

太阳能电池用硅单晶切割片

Mono-crystalline silicon as cut slices for photovoltaic solar cells

硅退火片规范

Specification for silicon annealed wafers

硅单晶抛光试验片规范

Specification for polished test silicon wafers

轨道交通 地面装置 直流开关设备 第7-3部分：直流牵引供电系统专用测量、控制和保护装置 隔离电压变送器和其他电压测量设备

Railway applications - Fixed installations - DC switchgear Part 7-3: Measurement,control and protection devices for specific use in d.c. traction systems-Isolating voltage transducers and other voltage measuring devices

轨道交通 地面装置 直流开关设备 第7-2部分：直流牵引供电系统专用测量、控制和保护装置 隔离电流变送器和其他电流测量设备

Railway applications - Fixed installations - DC switchgear Part 7-2: Measurement,control and protection devices for specific use in d.c. traction systems-Isolating current transducers and other current measuring devices

轨道交通 地面装置 直流开关设备 第7-1部分：直流牵引供电系统专用测量、控制和保护装置 应用指南

Railway applications - Fixed installations - DC switchgear - Part 7-1: Measurement,control and protection devices for specific use in d.c. traction systems-Application guide

轨道交通 地面装置 直流开关设备 第6部分：直流成套开关设备

Railway applications - Fixed installations - DC switchgear - Part 6: DC switchgear assemblies

轨道交通 地面装置 直流开关设备 第3部分：户内直流隔离开关、负荷开关和接地开关

Railway applications - Fixed installations - DC switchgear - Part 3: Indoor d.c. disconnectors, switch disconnectors and earthing switches

硅片载流子复合寿命的无接触微波反射光电导衰减测试方法

Test method for carrier recombination lifetime in silicon wafers by non-contact measurement of photoconductivity decay by microwave reflectance

硅片切口尺寸测试方法

Standard test method for dimensions of notches on silicon wafers

重掺杂衬底上轻掺杂硅外延层厚度的红外反射测量方法

Test mothod for thickness of lightly doped silicon epitaxial layers on heavily doped silicon substrates by infrared reflectance

冷阴极荧光灯 性能要求

Cold cathode fluorescent lamps service - Performance requirements

电气绝缘材料 耐热性 第6部分：老化烘箱 多室烘箱

Electrical insulating materials - Thermal endurance properties - Part 6: Ageing ovens - Multi-chamber ovens

标准电压高于1000V的架空线路绝缘子 第2部分：交流系统用绝缘子串及绝缘子串组 定义、试验方法和接收准则

Insulators for overhead lines with a nominal voltage above 1000V - Part 2: Insulator strings and insulator sets for a.c.systems - Definitions, test methods and acceptance criteria

人机界面标志标识的基本和安全规则 指示器和操作器件的编码规则

Basic and safety principles for man-machine interface,marking and identification - Coding principles for indicators and actuators