|
|

楼主 |
发表于 2012-10-19 08:50
|
显示全部楼层
wwnw_007 发表于 2012-10-19 08:38 & S) ]0 C- ~9 b- q2 k7 Z
结构部分的排水孔里有规定面积。 0 l, {8 P2 W8 Z3 S9 T2 C8 U
结构部分并没有规定排水孔面积,不知道你指的是哪个标准。下面是IEC60598-1的第四章关于排水孔的描述:
2 {( @% R& G# E0 }5 e6 `4.17 Drain holes ' w- X( g* W/ B/ Q
Drip-proof, rain-proof, splash-proof and jet-proof luminaires shall be so designed that if water
( P5 G5 f8 w+ e' Waccumulates in the luminaire it can drain out effectively, for example by opening one or more
% @" y2 a' \* C" _* adrain holes. Watertight luminaires s hall have no provision for draining.
; v1 }3 T" q" _# N6 c$ h3 KCompliance is checked by inspection and by the tests of Section 9.
& z/ H) w% P' K6 k! t/ p" E+ W8 xNOTE A drain hole in the back of a luminaire for surface mounting is effective only if the design ensures a clearance of at least 5 mm from the mounting surface, for example, by means of projections from the back.
7 Z, a! k8 B; E; N3 \上面只提到了孔位应与安装表面有至少5mm的间隙,希望能够得到专业一点回答,不要笼统想当然的回答。 |
|