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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。
z$ t1 t: p9 }7 U5 v* I b! X1.2.71& i( O, B& Q9 j1 x* r
self-shielded lamp
, q5 d7 \$ u' b( ?+ [tungsten halogen lamp or metal halide lamp for which the luminaire needs no protective shield
4 P6 |0 B. e" r o' w! e( sfor protection against UV emission or lamp shattering- O/ \7 k/ p' |- z9 Q
4.21 Protective shield% |) J3 @$ Z0 _" r7 \) T
4.21.1 Because of the possible risk of lamp shattering, luminaires designed for tungsten
@0 d5 |# o" F! k+ O8 T2 dhalogen lamps and luminaires designed for metal halide lamps shall be fitted with a protective
$ y7 o3 r) G$ L& S+ u7 z' o' n) Mshield. For tungsten halogen lamps, the shield shall be of glass.% ]8 e6 c% a0 E- P% G: ?- E+ Q
Luminaires designed to be used with self-shielded lamps only are exempt from this6 B' P6 s6 |5 K; r4 t) L
requirement, but shall be marked with the appropriate symbol (see Figure 1). |
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