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d) 1) For luminaires without drain holes, there shall be no water entry.
& F# w% g) U4 @! D% R6 p4 e, n9 D% LNOTE Care should be taken not to mistake condensation for water entry.# ^! ], |0 [- [- f
2) For luminaires with drain holes, water entry including condensation is allowed during the" Q* X# h3 t# b- N2 D* K
tests if it can drain out effectively and provided it does not reduce the creepage and
+ }, ?. u% g$ ^6 g, l: y3 c$ nclearance distances below the minimum levels specified in the standard;
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& x" B y" V. Q* y0 O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。
8 l) [, X# k. ~0 V" {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; , a3 t+ }. b4 r: Z$ c( T k
从标准上看,你的IP44没问题,凝露水不算进水。 |
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