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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。
( G* u4 ]0 m% a9 ]# K1.2.71
( } c6 m2 g. v s+ N o: Xself-shielded lamp1 h6 s" V. a$ B: ~8 P: d
tungsten halogen lamp or metal halide lamp for which the luminaire needs no protective shield" u/ F" N2 A) H; c% l8 H- V
for protection against UV emission or lamp shattering
# C* G# f, w( u& B2 h4.21 Protective shield/ _! r3 C( w6 E
4.21.1 Because of the possible risk of lamp shattering, luminaires designed for tungsten5 h1 y9 n; q+ l# K# p
halogen lamps and luminaires designed for metal halide lamps shall be fitted with a protective: r, i* N0 A) B8 A" X6 P. E
shield. For tungsten halogen lamps, the shield shall be of glass.- A- E8 X, @8 o4 Y0 k- a" S) a/ n3 r7 b# n
Luminaires designed to be used with self-shielded lamps only are exempt from this) w+ S4 c$ w9 Y9 m8 @- C
requirement, but shall be marked with the appropriate symbol (see Figure 1). |
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