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板凳
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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 ! }. R0 X H1 M! [, T
结构部分的排水孔里有规定面积。
+ `6 n' ~& [- z# V* S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:) j X, V& `; M- }: d2 g
4.17 Drain holes
9 R. J" g$ s, K/ H- I* i8 r# BDrip-proof, rain-proof, splash-proof and jet-proof luminaires shall be so designed that if water & B8 h' N: ]6 t2 ^
accumulates in the luminaire it can drain out effectively, for example by opening one or more
% F2 F) H( Q% p/ P- {% L* cdrain holes. Watertight luminaires s hall have no provision for draining. $ p1 N/ q3 G% d
Compliance is checked by inspection and by the tests of Section 9. l* l5 I" n) H$ A. [) T
NOTE 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. 0 ?! _ C) d' R0 n3 P
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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