防触电和防止触及运动部件中对于联锁开关的要求

ID长就牛b · 发表于 2015-6-17 10:28

这儿有份决议，麻烦各位大哥帮我看看啥意思？

Question: For removing or opening a cover, a door, etc., mechanically operated interlock switches can be used for protection against electric shock and accessibility of moving parts.
Which are the requirements for interlock switches regarding distances contact gaps and reliability of cycling operations of switches for fixed appliances and appliances provided with plug which provide:
1) protection against electric shock and energy hazards, or
2) protection against dangerous moving parts?

Decision: 1) It is not acceptable to get access to live parts after operation of an interlock switch without a tool even if is at least 3mm between the contact gaps and with all poles disconnection. In that situation it is still considered to be live. Only certain parts 2 (e.g. air cleaners and insect killers) this is allowed;
2)At least a micro switch (< 3 mm) and minimum one pole disconnection to obtain the protection against mechanical hazards.
The interlock switches are tested according to sub-clause 24.1.3:
switched under load for 10.000 cycles, switched without load for 100 cycles.

热爱学习 · 发表于 2015-7-2 08:56

这个跟那个用霍尔元件的好像还不一样，霍尔元件应该不算是“mechanically operated interlock switches”应该是electronically operated，情况比这个还要复杂

332783568 · 发表于 2015-7-3 16:29

如果连锁开关要是防触电要求，全极断开，III类过电压类别，3mm电气间隙要求，连锁开关工作后不能触碰到带电部件，开关还有符合24.1.3条款的要求；
如果是防危险运动部件，小于3mm单极断开也可以

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[IEC标准产品] 防触电和防止触及运动部件中对于联锁开关的要求

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