|
|
d) 1) For luminaires without drain holes, there shall be no water entry.
' c6 x$ p' a" h; Y& z: g# Y' TNOTE Care should be taken not to mistake condensation for water entry.
" ^8 D6 x' \' H% s' S; G6 o6 I/ P2) For luminaires with drain holes, water entry including condensation is allowed during the
6 n3 y: [! X" O+ P/ N, C( A5 otests if it can drain out effectively and provided it does not reduce the creepage and7 t7 Z- o) M8 v% ~) z: U
clearance distances below the minimum levels specified in the standard;
/ l4 k; L! z% {% W( d6 F" @- ]1 C
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。/ N6 V" ^) N+ A
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;
- F4 f9 N( l& R4 q& S0 ~/ a从标准上看,你的IP44没问题,凝露水不算进水。 |
|