求助
请问各位怎样判断基本绝缘和加强绝缘还有双重绝缘,需要什么仪器?? 你去看看标准上的定义,需要用到的仪器主要有量距离的:直尺、卡尺等! 标准里对于基本绝缘,附加绝缘,双重绝缘和加强绝缘都要定义对于绝缘的要求有距离和耐压上的要求,距离一般用游标卡尺测量,耐压一般用高压测试仪考核 能否具体些,标准上好像找不到,谢谢 引用第3楼gzm-happy于2008-03-21 12:52发表的:
能否具体些,标准上好像找不到,谢谢
1.2.16
basic insulation
insulation applied to live parts to provide basic protection against electric shock.
NOTE Basic insulation does not necessarily include insulation used exclusively for functional purposes.
1.2.17
supplementary insulation
independent insulation applied in addition to basic insulation in order to provide protection
against electric shock in the event of a failure of basic insulation.
1.2.18
double insulation
insulation comprising both basic insulation and supplementary insulation.
1.2.19
reinforced insulation
single insulation system applied to live parts, which provides a degree of protection against
electric shock equivalent to double insulation. 引用第4楼vbluesky于2008-03-21 14:21发表的:
1.2.16
basic insulation
insulation applied to live parts to provide basic protection against electric shock.
NOTE Basic insulation does not necessarily include insulation used exclusively for functional purposes.
.......
这个只是对绝缘的定义而已,我要的是具体的,比如绝缘层的厚度等........ 为何不回我 为何不回 对于绝缘要求,根据不同的灯具有不同的要求,比如在工作电压不超过250V~的普通灯具,
爬电距离 电气间隙
基本绝缘PTI 大于等于600 1.7mm 1.7mm
小于600 2.5mm 1.7mm
附加绝缘 3.6mm 3.6mm
加强绝缘 6.5mm 6.5mm
工作电压不超过250V~,IPX1或更高
爬电距离 电气间隙
基本绝缘PTI 大于等于600 3.2mm 3mm
小于600,大等于175 4mm 3mm
附加绝缘 4mm 3.6mm
加强绝缘 6.5mm 6.5mm
而耐压要求如下:
SELV部件: 500V
基本绝缘: 2U+1000V
附加绝缘: 2U+1750V
双重/加强绝缘: 4U+2750V
U为工作电压
本文来自:安规网 www.angui.org请勿转贴本站技术原创贴!谢谢! 虽然标准上对于绝缘有定义,有要求,但还是要根据不同的结构,不同的部件来判断
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