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d) 1) For luminaires without drain holes, there shall be no water entry.8 p% L0 |" D2 D
NOTE Care should be taken not to mistake condensation for water entry.2 q2 C5 {/ f3 E1 K$ L; H7 A
2) For luminaires with drain holes, water entry including condensation is allowed during the) s/ V! f6 m% F8 A2 s2 w. r( _
tests if it can drain out effectively and provided it does not reduce the creepage and6 D ?5 F. g. `/ R9 ]3 g
clearance distances below the minimum levels specified in the standard;9 M8 z' p" y! C
6 N6 ^0 ~ A0 `# k4 B. J5 }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。
! f9 |! M7 m9 N- I1 k, y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; 0 P ?9 P2 D; ]5 X
从标准上看,你的IP44没问题,凝露水不算进水。 |
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