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UL 153 这个灯要做cls 159 mouting means test 吗？这个算弹簧吗（就一个铁线）？
6 V% D3 }6 B0 f! ~1 `) R159.1.1 A clamp-on unit relying on a spring-actuated clip for securement shall be subjected to the test
8 J, c5 @ r; [0 [described in 159.2. Compliance criteria is described in 159.3.
2 M- k5 c" w! `9 d$ u' g% {) i. c159.2 Test method. {; C1 D7 W6 |
159.2.1 The test is to be conducted as follows:
( {- y3 }, D6 G7 m3 h! ja) The unit is to be clamped to a smooth vertical unpainted metal surface 1/16 inch (1.6 mm)
. X6 G/ S3 P7 [ A3 _9 athick. A weight equal to the weight of the unit is to be attached at the point where the clamp is
n6 T* `/ ] `7 E+ g9 @7 s/ qsecured to the unit. See Figure 159.1.# {6 U; K1 f+ P3 z
b) The test is to be repeated with the unit clamped to a smooth, unpainted pine wood surface; b- E; V% z2 @# h+ W6 H
1-1/2 inches (38 mm) thick.
( k% X: [9 g0 d* s) {( a. p) H1 ec) For each of the above conditions, the weight is to be applied gradually and maintained for
( T4 t) U3 f, ~% Gone hour.) }% K) x+ n8 l- p: d. `0 B
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发表于 2013-4-13 12:51
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