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d) 1) For luminaires without drain holes, there shall be no water entry.
; r: ?# P8 H; a* pNOTE Care should be taken not to mistake condensation for water entry.
- p3 z# _: O3 k; U( N6 R6 w* X+ ^6 H y2) For luminaires with drain holes, water entry including condensation is allowed during the
! h; o! Q- P1 i" }6 Qtests if it can drain out effectively and provided it does not reduce the creepage and, \8 I5 m* b, R2 {* c b
clearance distances below the minimum levels specified in the standard;
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, k j/ A* V$ p! M% r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。3 K6 ?6 s5 O0 J8 |- 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;
8 L! {' B9 T R& e) {从标准上看,你的IP44没问题,凝露水不算进水。 |
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