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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)?
5 I Q6 v( f3 h% H( y" f" i159.1.1 A clamp-on unit relying on a spring-actuated clip for securement shall be subjected to the test4 v/ B, Q& V9 E7 R+ u+ \3 e6 M3 Y
described in 159.2. Compliance criteria is described in 159.3.
) q8 q3 ^6 W' W+ [) t159.2 Test method8 ^8 n, L3 @. [. T' L3 ?
159.2.1 The test is to be conducted as follows:& k# p) j9 `) S7 @( h0 F
a) The unit is to be clamped to a smooth vertical unpainted metal surface 1/16 inch (1.6 mm)3 a0 x0 @3 s3 Z0 n
thick. A weight equal to the weight of the unit is to be attached at the point where the clamp is" x* ?2 a, z4 g% K2 e* q0 H0 M
secured to the unit. See Figure 159.1.
6 H/ q& J1 t2 y& X1 x+ I: X0 Z y; Lb) The test is to be repeated with the unit clamped to a smooth, unpainted pine wood surface, q# M! ]3 M- D( d
1-1/2 inches (38 mm) thick.$ V) a0 n" j* Y8 h4 d* U! z9 Q
c) For each of the above conditions, the weight is to be applied gradually and maintained for
1 E9 ^0 [: u3 ] I8 {( xone hour.* a7 }5 D( W% B$ B2 C
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