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发表于 2012-10-19 08:50
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wwnw_007 发表于 2012-10-19 08:38 ) t! @% G9 _6 `: O
结构部分的排水孔里有规定面积。
) P$ o; c5 c3 i! H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:" V$ U* m5 K" v. Q; V0 J/ q' s' {
4.17 Drain holes
/ ~! |) c, N. ]4 Q- v! BDrip-proof, rain-proof, splash-proof and jet-proof luminaires shall be so designed that if water
' E- l, x- V% ~& Q5 K5 eaccumulates in the luminaire it can drain out effectively, for example by opening one or more 7 d4 y/ \1 V" }* `( K8 ?$ [" Q1 r
drain holes. Watertight luminaires s hall have no provision for draining. 0 D! @# [* m" W ?1 D5 P3 p2 k
Compliance is checked by inspection and by the tests of Section 9.
) E" U: o p2 M, d' oNOTE 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.
9 |1 ]- i. }3 }# V, o% o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。 |
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