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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)?
8 v: ~2 m4 |$ H+ l* T4 R159.1.1 A clamp-on unit relying on a spring-actuated clip for securement shall be subjected to the test8 R/ a" X4 C: O/ |
described in 159.2. Compliance criteria is described in 159.3." Z& _$ B3 C% N( B/ Z& w7 d3 d! o
159.2 Test method5 {3 t+ k1 v$ @7 H' R
159.2.1 The test is to be conducted as follows: s. u6 u6 s+ K4 P5 J! Z
a) The unit is to be clamped to a smooth vertical unpainted metal surface 1/16 inch (1.6 mm)) ] o7 F% c5 z7 e7 [# y
thick. A weight equal to the weight of the unit is to be attached at the point where the clamp is
7 Y8 a0 L+ W9 `% u# t X: hsecured to the unit. See Figure 159.1.1 t1 P$ [ n* S) p6 Y L% b/ X8 y3 F
b) The test is to be repeated with the unit clamped to a smooth, unpainted pine wood surface
7 s, m# U; @7 i# V0 T! X6 R1-1/2 inches (38 mm) thick.* B, m+ E5 b. M) V2 z
c) For each of the above conditions, the weight is to be applied gradually and maintained for
$ ?" y h+ C% _$ ione hour.
7 g" `) G- }. n. p% J# C1 }+ |- H |
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