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d) 1) For luminaires without drain holes, there shall be no water entry.
/ C; D1 I. _( f% e+ KNOTE Care should be taken not to mistake condensation for water entry.) z0 E2 m! J* E' n+ _3 T- J, m9 B
2) For luminaires with drain holes, water entry including condensation is allowed during the
4 s7 \+ f5 L9 y e2 z7 Ktests if it can drain out effectively and provided it does not reduce the creepage and6 J$ i$ _9 C2 v7 l1 N# W
clearance distances below the minimum levels specified in the standard;
' l5 z6 ~2 \7 P6 Z% Q2 o/ L5 Q6 D
, f. z# a4 g6 y% K: v6 w' x& M! D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。
0 u6 @) l3 A3 {* f9 v# c8 x" l- l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;
" T4 d, C2 M) }从标准上看,你的IP44没问题,凝露水不算进水。 |
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