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引用第4楼luqing_sz于2008-10-13 17:05发表的 :
2 t) i& h- O; C& D+ x# i0 a个人认为:以上接地方法不符合安规28.2,它虽然没有靠热变形材传递,但依赖了热变形材料,如果真的变形了,以上接地的后果是全部松掉." F2 `, \* g; Y* j6 c
60335-1:28.2 Electrical connections and connections providing earthing continuity shall be constructed so that contact pressure is not transmitted through insulating material that is liable to shrink or to distort unless there is sufficient resiliency in the metallic parts to compensate for any possible shrinkage or distortion of the insulating material. NOTE Ceramic material is not liable to shrink or to distort. This requirement does not apply to electrical connections in circuits carrying a current not exceeding 0,5 A. Compliance is checked by inspection.
/ @5 Q8 ^3 e7 o- J个人觉得这种结构接受,虽然难看了点,但只要不出安全问题。如果觉得难看,可以换别的接地方式(比如在某个金属件上固定)。' U7 N2 n5 ]8 O. T% [
但是现在讨论的是在这个安装位置可不可以接受,如果在此位置做接地端子,至于怎么加螺母和防滑片只要改善就可以了。因为只要螺柱头与一个螺母夹住塑料外壳,即使由于日晒雨淋变形一点点,也不影响塑料外壳被紧紧夹住。至于电源线中的接地线作为进线,与接在此端子分进到器具内部的地线之间可以用一个螺母分开。 |
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