标题: 关于UL1082标准7.11疑问 [打印本页] 作者: myhet 时间: 2008-5-18 11:02 标题: 关于UL1082标准7.11疑问 7.10 An opening in the enclosure that has a minor dimension of less than 1 inch (25.4 mm) is acceptable* ?0 ?& u. A& C+ _# r
if a probe as illustrated in Figure 7.2, inserted through the opening, cannot be made to touch any + Q- O" `0 l+ F& y' \& Euninsulated live part of film–coated wire that involves the risk of electric shock. The probe shall be applied' \5 q8 o! w) o' I0 q9 D: i& ^
in all possible articulated positions before, during, and after insertion. : x5 `1 m9 P8 y$ y+ ~7.11 An opening that has a minor dimension of 1 inch (25.4 mm) or more, in an enclosure, as illustrated , ]2 |9 l5 O# u' \, A0 ^7 sin Figure 7.3, is acceptable if, within the enclosure, there is no uninsulated live part or film-coated wire/ [9 x3 A* s8 [: U# q( L
less than;- ^$ @% Y& W; n- Q8 S @7 I
a) R distance from the inside edge of the perimeter of the opening and 1 y) N& u+ }) |% S6 Hb) X distance from the plane of the opening. 1 l) D8 A5 L2 f, ST equals the enclosure thickness, R equals X minus T, and X equals 5 times the diameter of the largest# X+ m" j1 F$ ?
round rod that can be inserted through the opening but not less than 6-1/16 inches (154 mm). In$ \3 O" @( ~- J) `0 P7 ?
evaluating an opening, any barrier located within the volume is to be ignored unless it intersects the' x) O0 H" z- H' N, [! J9 `
boundaries of the volume in a continuous, closed line.3 m2 p/ F7 ~6 R) e' p: }
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7.11是否说在一个符合7.3描述的外壳上，当有大于或等于25.4mm的开口时，如果在外壳的以下范围内没有uninsulated live part or film-coated wire的是可以接受的？ # r' X8 ?! M* T, i1 x这个范围是：A，从开口内边角算起的R距离间。R=外壳厚度+X g6 b1 z. x% F" ^1 {; {3 j B，从开口平面算起的X距离间。X=MAX.（5*Rod直径，154mm）作者: simondai 时间: 2008-5-19 22:09
个人理解:- i/ v- r# H9 Z, s) {/ h) C' B6 p
7.11 当产品的外壳上有如图7.3那样的一个开口,并且此开口的最小边长度大于等于1英寸时,如果能够满足：- T8 `* z- h B( B6 m8 G E
0 F' e% E' C& w1 Q' m5 {Ａ）在以开口内边为中心，距离为Ｒ的周长范围内，同时, E2 R( I4 J1 ~
Ｂ）距开口外表面Ｘ距离的范围内* v$ h- l. [# \* Q s3 L8 R
$ v, ?, y! _" P- A没有任何未绝缘带电体或者漆包线，则认为是可接受的．* t X! C1 O) m1 O
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Ｔ为外壳厚度，Ｒ等于Ｘ－Ｔ，并且Ｘ应当等于最大可伸入开口圆棒直径的５倍但不应小于６－１／１６英寸．在评估开口时，任何挡板都应当被忽略除非该挡板在外壳上的投影可以和开口２边外壳形成一个连续封闭的线．