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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)?& [; j- C2 q. S. \: V6 v
159.1.1 A clamp-on unit relying on a spring-actuated clip for securement shall be subjected to the test
' r( _, _' I9 H# _described in 159.2. Compliance criteria is described in 159.3.) |5 H( ^# `% \/ t& }
159.2 Test method' H( v3 `- s' n/ @
159.2.1 The test is to be conducted as follows:6 G( l* l- o- ^7 M, @, R
a) The unit is to be clamped to a smooth vertical unpainted metal surface 1/16 inch (1.6 mm)8 \# U) m* k/ w0 |. D5 I
thick. A weight equal to the weight of the unit is to be attached at the point where the clamp is M7 @/ h- k' A' p& o6 d
secured to the unit. See Figure 159.1.
) ~3 ?! I2 [0 H2 db) The test is to be repeated with the unit clamped to a smooth, unpainted pine wood surface' A$ A, I7 Q/ i5 Q3 a/ e, N
1-1/2 inches (38 mm) thick.
: Y E1 @1 [. p/ }" r( H$ ^2 gc) For each of the above conditions, the weight is to be applied gradually and maintained for8 B. a y! X3 c
one hour.
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