SELV灯具的材料测试请教。
对SELV灯具的材料测试需要做球压和针焰或灼热丝吗? 若是IEC60598的灯具, SELV也要测试球压,针焰,灼热丝的.13.2 Resistance to heat
External parts of insulating material providing protection against electric shock, and parts of
insulating material retaining current-carrying parts or SELV parts in position shall be sufficiently
resistant to heat.
13.3 Resistance to flame and ignition
Parts of insulating material retaining current-carrying parts or SELV parts in position, and
external parts of insulating material providing protection against electric shock shall be
resistant to flame and ignition. 引用第1楼lynn305于2007-05-15 13:49发表的:
若是IEC60598的灯具, SELV也要测试球压,针焰,灼热丝的.
13.2 Resistance to heat
External parts of insulating material providing protection against electric shock,]
很迷惑的说:
对于SELV电路来说,绝缘材料会起到防电击作用吗? 这个应该主要是防热的
因为在某些情况下如果SELV电路短路或者电池装反
会在短时内产生较大的短路电流
发热比较厉害
所以可能要考核阻燃
个人意见
仅供参考
引用第2楼feike008于2007-05-16 13:18发表的:
引用第1楼lynn305于2007-05-15 13:49发表的:
若是IEC60598的灯具, SELV也要测试球压,针焰,灼热丝的.
13.2 Resistance to heat
External parts of insulating material providing protection against electric shock,]
.......
External parts of insulating material providing protection against electric shock, and
parts of insulating material retaining current-carrying parts or SELV parts in position shall
be sufficiently resistant to heat
你需要看帶“藍色”這段話。
對於SELV來說,是指載流元器件的絕緣材料要考量球压,针焰,灼热丝。 夹持带电部件的(SELV部件),只做球压和灼热丝试验.针焰不用做吧?如果只是外壳,只要做650度的灼热丝试验就行了 支撑载流部件做球压,针焰就可以了
如果绝缘材料提供了防触电,则做灼热丝和球压 标准规定,固定截流部件或安全特低电压部件就位的绝缘材料部件,应耐燃防明火。合格性用13.3.1或13.3.2,注意是或!13.3.2条规定:固定安全特低电压部件就位的绝缘材料部件做650度灼热丝试验 另外,安全特低电压是不作为带电部件考核的,也就是说,安全特低电压部分的外壳是不用作绝缘材料的,说的再明白点就是,那个位置的外壳就是没有也没关系! 作为承载导电体的绝缘需要做的
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