GB/T 24275-2019 代替 GB/T 24275—2009
低压固定封闭式成套开关茴设备和控制设备
Low-voltage fixed connection enclosed switchgear and controlgear assemblies
2019-10-18 发布
2020-05-01 实施
目 次
前言.............................................1
1范围.........................................1
2规范性引用文件...................................1
3术语和定义.....................................2
4分类.........................................2
4.1外売类型....................................2
4.2使用场所....................................2
4.3防护等级....................................2
4.4设备安装面...................................2
5使用条件.......................................3
5.1正常使用条件..................................3
5.2特殊使用条件..................................3
5.3运输、存放和安装条件.....宝.........................3
6结构要求.......................................4
6.1材料和部件强度..................................4
6.2尺寸...............................5
6.3箱柜结构..............................5
6.4成套设备外売的防护等级..............................7
6.5电气间隙和爬电距离..............................7
6.6    电击防护......................................9
6.7开关器件与元件的选择和安装............................13
6.8内部电路和连接..................................15
6.9外接导线端子....................................17
7性能要求........................................18
7.1介电性能......................................18
7.2温升........................................19
7-    3短路保护与短路耐受强度..............................19
7.4 电磁兼容性(EMC) ................................ 20
8设计验证........................................23
8.1通则........................................23
8.2材料和部件强度的验证...............................24
8.3防护等级验证(IP代码)..............................24
8.4电气间隙和爬电距离验证..............................24
8.5电击防护和保护电路连续性验证...........................24
8-    6开关器件和元件的组合...............................25
8.7    内部电路和连接..................................25
8.8外接导线端子....................................25
8-9介电性能验证.....................................25
8.10温升极限的验证...................................26
8- 11短路耐受强度验证.................................26
8.12电磁兼容性试验...................................28
8.13机械操作试验....................................29
9例行检验..........................................29
9.1通则.........................................29
9.2外売的防护等级....................................30
9.3电气间隙和爬电距离..................................30
9.4电击防护和保护电路完整性...............................30
9.5内装元件的组合....................................30
9- 6内部电路和连接...................................30
9.7外接导线端子.....................................30
9.8机械操作.......................................30
9.9介电性能.......................................30
9.10布线、操作性能和功能................................31
10信息...........................................31
10.1 标志.......................................31
10.2使用说明书.....................................32
10- 3器件和（或）元件的识别..............................32
11包装、运输和贮存.....................................32
11.1包装与运输.....................................32
11.2装箱时随附资料及文件................................32
11.3 贮存.......................................32
参考文献...........................................33