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 ) Y4 h/ u8 K9 rif a probe as illustrated in Figure 7.2, inserted through the opening, cannot be made to touch any( p$ R+ H. c; z1 W
uninsulated live part of film–coated wire that involves the risk of electric shock. The probe shall be applied * b @. F- X5 |2 x" I+ {7 ^9 |in all possible articulated positions before, during, and after insertion. - X' F) T9 l! I6 [; R7.11 An opening that has a minor dimension of 1 inch (25.4 mm) or more, in an enclosure, as illustrated 9 X% Q/ B+ c1 ?7 z( ^4 [; {- I8 t) Xin Figure 7.3, is acceptable if, within the enclosure, there is no uninsulated live part or film-coated wire: c: b2 a' ^: j/ L
less than; ( M+ F( q* O; X4 x/ V: xa) R distance from the inside edge of the perimeter of the opening and & c* ^% X# w6 |3 Y% R2 d+ o% zb) X distance from the plane of the opening.4 B$ R0 U2 ^/ A: ^: y" W
T equals the enclosure thickness, R equals X minus T, and X equals 5 times the diameter of the largest 3 Z3 t, y8 I4 iround rod that can be inserted through the opening but not less than 6-1/16 inches (154 mm). In 9 @- U4 \# X. Kevaluating an opening, any barrier located within the volume is to be ignored unless it intersects the1 i9 j4 _6 s' I/ J$ |& R! p# Q
boundaries of the volume in a continuous, closed line. y; J/ a$ _% [9 n
, d/ d( Q1 l4 {2 w7.11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？: R7 R: o# F# G; r- b! C; H2 m
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 0 D/ Z) N* O% H: H0 _ 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:- R5 M! y) r/ A0 Q! g+ m2 N5 n3 o
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： ; [7 u4 Z7 b9 t* r, M, I) D( P$ c. f" O/ E; g" W
Ａ）在以开口内边为中心，距离为Ｒ的周长范围内，同时 1 ^( r- g% k" eＢ）距开口外表面Ｘ距离的范围内, b6 u5 n9 I0 I% F
t- Z2 r8 h7 ?
没有任何未绝缘带电体或者漆包线，则认为是可接受的． * H4 r6 S M6 o* R: @+ ~6 R2 Z2 ~2 W& N2 F( ?3 s: L
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．