请教大神关于62368第二版中6.4.3.2以下这段话是否有问题啊?
请教大神关于62368第二版中6.4.3.2以下这段话是否有问题啊?看起来应该是含有易燃材料或者防火等级低于V1的PCB上的导体不能有开路吧Conductors of a printed board of V-1 class material may open under overload condition provided that the open circuit is not an arcing PIS. Conductors on a printed board material that has no material flammability class or is classed lower than V-1 class material shall not open.
前後兩句分開看, 當成兩件事, 就不會矛盾@@
rocknan 发表于 2020-7-13 08:38
前後兩句分開看, 當成兩件事, 就不會矛盾@@
大神,明白前后两句是要分开看,但是就单单这句话,你不觉得有问题么,应该是含有易燃材料或者PCB阻燃等级低于V-1上的导体不能有开路吧
Conductors on a printed board material that has no material flammability class or is classed lower than V-1 class material shall not open. 道友,我认为应该是这样解读:material that has no material flammability class 是指那些不具有耐燃性能的材料,耐燃等级连最低的HB都达不到,所以就是has no material flammability class(就是你所说的易燃类吧),而lower than V-1 class 就不用解释了吧,就是大于等于HB且小于V1 wangshouyi 发表于 2020-7-30 15:21
道友,我认为应该是这样解读:material that has no material flammability class 是指那些不具有耐燃性能 ...
茅塞顿开,感谢大神分享:)
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