![]() Functional safety of electrical/electronic/programmable electronic safety-related systems - Functional safety and GB/T 20438 电气/电子/可编程电子安全相关系统的功能安全 功能安全概念及GB/T 20438系列概况 |
![]() Lead-acid battery for locomotives and rolling stock - Part 1: Valve-regulate lead acid for electric and subway locomotives 轨道交通车辆用铅酸蓄电池 第1部分:电力机车、地铁车辆用阀控式铅酸蓄电池 |
![]() Aramid pressboard for electrical purposes - Part 2: Methods of test 电气用聚芳酰胺纤维纸板 第2部分:试验方法 |
![]() Wheelchairs - Part 14: Power and control systems for electrically powered wheelchairs and scooter - Requirements and test methods 轮椅车 第14部分:电动轮椅车和电动代步车动力和控制系统 要求和测试方法 |
![]() Switches for household and similar fixed electrical installations - Part 2-1: Particular requirements - Electronic switches 家用和类似用途固定式电气装置的开关 第2-1部分:电子开关的特殊要求 |
![]() Adjustable speed electrical power drive systems - Part 3: EMC requirements and specific test methods 调速电气传动系统 第3部分 :电磁兼容性要求及其特定的试验方法 |
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