请教一个III类器具理解问题
请问这图片的理解是否正确？若不正确，该如何理解。本帖最后由 zylyr2001 于 2019-4-10 09:29 编辑
你的这段话是出自哪个标准？怎么我看到的是这样的：
3.3.12
class III appliance
appliance in which protection against electric shock relies on supply at safety extra-low
voltage and in which voltages higher than those of safety extra-low voltage are not
generated
NOTE Basic insulation may be required in addition to supply at SELV. Refer to 8.1.4.
但是IEC60335-1里还有这样一句：
6.1 Appliances shall be of one of the following classes with respect to protection against
electric shock:
class 0, class 0I, class I, class II, class III.
If an appliance consists of a part of class III construction and a detachable power supply
part, the complete appliance is classified as a class I appliance or class II appliance in
accordance with the classification applicable to its detachable power supply part.
如果按6.1的定义就是三类结构+可拆式适配器，整机的防护等级就取决于适配器的防护等级了，不是一类就是二类，不可能是三类。
zylyr2001 发表于 2019-4-10 09:22
你的这段话是出自哪个标准？怎么我看到的是这样的：
3.3.12
class III appliance
谢谢解答，那个是很老的版本了吧，图片上的是其他个人的理解， CTL653是旧的了，新的标准IEC 60335/A2已强调了二楼所说的情况，必须同适配器的防护等级一样。 这个我也不懂，坐等最终答案:lol
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