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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)?9 z" T1 E! F+ @/ l# ?; B6 u9 W6 G
159.1.1 A clamp-on unit relying on a spring-actuated clip for securement shall be subjected to the test, N6 o5 N) ^) z* U* }6 n% Z9 Q
described in 159.2. Compliance criteria is described in 159.3.8 s6 b- P1 X) ]$ z6 n
159.2 Test method
7 {: i$ J+ t0 S" ?- l8 o159.2.1 The test is to be conducted as follows:1 b" O; U; e9 o' A
a) The unit is to be clamped to a smooth vertical unpainted metal surface 1/16 inch (1.6 mm)8 D ]* S3 N) m. Q% H& A
thick. A weight equal to the weight of the unit is to be attached at the point where the clamp is. P: Z3 h1 X- U) ~
secured to the unit. See Figure 159.1.# e: f' \2 ?8 s; U$ N5 W; V' |
b) The test is to be repeated with the unit clamped to a smooth, unpainted pine wood surface o* V' q. `: G) C" D6 i5 X
1-1/2 inches (38 mm) thick.; N1 u; ?+ k& ^7 ]( X; h0 p" @4 O
c) For each of the above conditions, the weight is to be applied gradually and maintained for3 G/ o: C& e2 _/ m2 w& H
one hour./ p5 Q. i# l1 R6 ?/ i" v! Z/ Q
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