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have some part which not clear,so have a help.
! M# h8 x; Y- Y" UFor portable light,please the following information(form UL153):0 v5 G- [! V1 i9 ?3 @! {
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' d1 `/ F7 v1 S* I# o- Q8.4 When wires pass through a joint between sections of a portable luminaire that are separable for) {' h0 e6 R/ F
packing purposes, the joint shall be such that rotation of one section with respect to the other during the
Q D. Z9 D# F* P ~+ y1 M dassembly of the sections is limited to not more that 360 degrees. Friction alone does not meet the intent# f- }4 `/ A6 A: V
of the requirement to prevent rotation.
5 ^" \* q$ @2 g/ \Exception: When all of the following conditions exist, rotation between sections of a portable luminaire is
% d5 [1 S6 N2 M( pnot limited to 360 degrees:
8 ]- D7 l2 h9 wa) The internal diameter of the tubing through which the wires pass is 1/2 inch (12.7 mm) or+ B9 P5 X) B; s& v, y! b3 s6 _
more or the Power Supply Cord Twist Test, Section 135A is conducted with acceptable results;" R( S; ]; {( B9 l
and
* t* G: f2 M/ H7 w, u9 eb) The rotation during assembly is limited to not more than one revolution for each 3 inches (762 O# D4 l# N X3 c8 t
mm) of unobstructed tubing length through which the wires pass, when such rotation does not
' @; v8 r) ?- Q& N* d# P: a' Dplace any stress on the conductors; and. m! B! P# j& O3 |1 u! `# q
c) The conductors do not involve splices unless the splices are:8 n& I3 @( \! j4 m# Y: E
1) Inaccessible during assembly in accordance with Accessibility of Live Parts, Section
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2) Secured and provided with strain relief that has been shown to be reliable and not3 S" K: h3 u. z! p
easily defeated by the user.)
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有款落地的灯,它是由LAMP BASE,THREE TUBES,LAMPSHADE组成,为了方便装,分开来安装,只要用户按照说明书去安装,在这里就关系到线的问题,TUBE与TUBE 联接之间,就会导致线会旋转360 度,并且线径是小于12.7mm,在此想问一下如何解决这个问题。如果做了电源线扭曲测试,就不能免温升吗。。。请各位大侠提出意见。。。THANKS。。。$ r# ?- ?* D" u, V# {4 `2 j
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