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d) 1) For luminaires without drain holes, there shall be no water entry.
7 p7 e4 R# f4 K0 o( V* JNOTE Care should be taken not to mistake condensation for water entry.6 Q- V" F4 ~' {! F C
2) For luminaires with drain holes, water entry including condensation is allowed during the
0 Y2 K* W5 t& H0 W, e5 R4 B9 Ktests if it can drain out effectively and provided it does not reduce the creepage and
& r, Y8 c7 t8 J5 B9 ]clearance distances below the minimum levels specified in the standard;, e7 t9 m$ P5 t5 O. f) b
, y o) a8 a# \% n9 U如果没有排水孔,不能有任何水进入灯具内部,应注意不要将凝露误认为是进水。
9 b% o5 G$ |! j如果灯具内带有排水孔且水可以有效的排出,不会使爬电距离和电气间隙发生改变。水的进入包括凝露水是允许存在的;
) [2 G, P8 N0 t从标准上看,你的IP44没问题,凝露水不算进水。 |
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