|
|
27.4中:
: V! u- ?; y* N" T: z' O" f如果接地端子的主体是铝或铝合金制造的框架或外壳的一部分,则应采取预防措施以避免由于铜与铝 Q# H7 Z1 J' @* H6 |9 ~
或铝合金的接触而引起的腐蚀危险。; a) z1 ^0 t( [" g7 Q
这里没区分是作为接地连续性还是作为接触压力的部件。因此铝和铜直接接触可能会引起不符合吧。
) \$ K% w; u, S, i' ]4 L" M4 ?铆接只要不是圆形的本身是可以接受的,楼主目前还有铝和铜材料的问题。
% y. m/ V% j# e2 I6 m# h
]* G/ h; f B3 \$ C3 h在168A决议中有这么一句话:5 c; [- e8 x' [7 p5 e1 X
- Aluminium and its alloys, provided special measures are taken for removing, where f$ z; u$ I; Z% a# Z4 c& k
necessary, the oxide layer, for obtaining a sufficient and durable contact pressure* a; L% r: A {: _4 F$ z
and for ensuring that the point of connection withstands the corrosion test specified;# t$ u4 m/ H* Z4 m0 J
4 c/ C3 E/ k9 d# F2 g/ Ghowever, until a suitable corrosion test and an electrical performance test are( F5 a2 h/ S6 M! _; F
available, aluminium and its alloys should preferably not be used for current-carrying6 E' d# ]5 D0 u; S
parts and terminals within the equipment./ x# _8 L( `) l5 m
然而,除非合适的耐腐性测试和电性能测试证明其有效,否则,铝及其合金应该最好不要用于器具的带电部件和连接端子。 |
|