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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)?! Q/ Z" g* Y( K7 I# V
159.1.1 A clamp-on unit relying on a spring-actuated clip for securement shall be subjected to the test
4 Z6 s6 c0 G5 `described in 159.2. Compliance criteria is described in 159.3.0 J% j' ^! a% B
159.2 Test method
0 \8 w# O9 M2 e9 o* L159.2.1 The test is to be conducted as follows:
6 }' l8 c& ^9 j, ~9 \a) The unit is to be clamped to a smooth vertical unpainted metal surface 1/16 inch (1.6 mm)
8 L; R: T% B5 q A" }9 [: r8 ~thick. A weight equal to the weight of the unit is to be attached at the point where the clamp is
- n0 ~9 a/ f4 N( E( ]( Psecured to the unit. See Figure 159.1.1 u1 @3 y5 }3 P! v# i
b) The test is to be repeated with the unit clamped to a smooth, unpainted pine wood surface
4 I' J" V2 q5 [7 V3 B9 p1-1/2 inches (38 mm) thick.- a8 g B4 i; k9 t f9 A% e( A
c) For each of the above conditions, the weight is to be applied gradually and maintained for4 h& o* j, \$ S/ i8 s8 j
one hour.. r, d" o6 s4 c( X
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