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protection against UV emission or lamp shattering, 标准已经写的很清楚,只有tungsten halogen lamp or metal halide lamp 才需要protective shield,LED灯具明显是不适用的。
% b' {! t8 Q2 T1 |2 y1.2.71- R/ f$ O' K' q! z9 w9 j
self-shielded lamp4 T% i" U9 [/ [4 |0 U' d; H
tungsten halogen lamp or metal halide lamp for which the luminaire needs no protective shield
4 I( X6 j) D- l, \: qfor protection against UV emission or lamp shattering" [( M. p+ v' v* ]* t7 d" }
4.21 Protective shield& X6 n! |3 I/ }8 S/ C- U" k$ `* \! ?
4.21.1 Because of the possible risk of lamp shattering, luminaires designed for tungsten9 e/ {/ g3 F9 [; Z4 M
halogen lamps and luminaires designed for metal halide lamps shall be fitted with a protective
7 L! p) C7 U7 E. C+ P: ?shield. For tungsten halogen lamps, the shield shall be of glass.
g. W, H! U9 l3 K+ `9 M" }/ pLuminaires designed to be used with self-shielded lamps only are exempt from this
) V- X4 ~8 M K" ]requirement, but shall be marked with the appropriate symbol (see Figure 1). |
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