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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)?
) M5 r* i4 O* Y/ K+ ]) u159.1.1 A clamp-on unit relying on a spring-actuated clip for securement shall be subjected to the test
/ l: G7 H( J3 Wdescribed in 159.2. Compliance criteria is described in 159.3.. [2 r8 X" g+ l- o# {
159.2 Test method$ p8 O8 g# u+ ^6 g. P) P
159.2.1 The test is to be conducted as follows:
# K( b, g: c3 Ea) The unit is to be clamped to a smooth vertical unpainted metal surface 1/16 inch (1.6 mm)
& q- a, u- z7 Zthick. A weight equal to the weight of the unit is to be attached at the point where the clamp is
7 I. M- o. I) ?secured to the unit. See Figure 159.1.8 R- m, L' |% |1 n+ A, S$ D4 w
b) The test is to be repeated with the unit clamped to a smooth, unpainted pine wood surface3 p7 w5 b4 i6 f7 @: a
1-1/2 inches (38 mm) thick.
$ ^7 g4 v) n2 h5 Jc) For each of the above conditions, the weight is to be applied gradually and maintained for7 t9 I5 a$ K5 l2 F9 z
one hour.
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