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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)?% H% F1 R5 y5 r" Y" X
159.1.1 A clamp-on unit relying on a spring-actuated clip for securement shall be subjected to the test
0 Q* D' K2 p) h" `! R- X7 H! F+ @described in 159.2. Compliance criteria is described in 159.3.: I4 X! j L7 ?2 ~2 ?
159.2 Test method: X0 P& z8 N2 e7 V2 m, I3 G% \
159.2.1 The test is to be conducted as follows: n/ p8 k1 d) w& X- q4 a1 t
a) The unit is to be clamped to a smooth vertical unpainted metal surface 1/16 inch (1.6 mm), a h2 z* ~" J+ a/ R; W& d
thick. A weight equal to the weight of the unit is to be attached at the point where the clamp is
( Z8 N0 J' x1 ^: x1 n5 Rsecured to the unit. See Figure 159.1./ c+ p2 ]7 o! ]9 ]; V% u0 k
b) The test is to be repeated with the unit clamped to a smooth, unpainted pine wood surface
1 r! |, }6 Z# S1-1/2 inches (38 mm) thick.
8 N& k- y3 T+ U3 u: N9 [c) For each of the above conditions, the weight is to be applied gradually and maintained for
2 f4 n) s& A2 U4 z+ y8 Sone hour.) x" o5 D: r- T0 t
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