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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。5 [* j* p5 @; R/ _/ h8 n7 v5 ^" Q
1.2.71
# i6 q2 q5 Q& Y d# qself-shielded lamp
# J1 J1 @* [0 }% |/ @+ Xtungsten halogen lamp or metal halide lamp for which the luminaire needs no protective shield" u5 v( D9 z. C
for protection against UV emission or lamp shattering
5 g! p k' ^2 d6 F c9 T; _9 s4.21 Protective shield) W5 y" X% T" F0 Y
4.21.1 Because of the possible risk of lamp shattering, luminaires designed for tungsten
u* o6 s; L# C4 m5 m Vhalogen lamps and luminaires designed for metal halide lamps shall be fitted with a protective. B* g4 h" K! O; o" L
shield. For tungsten halogen lamps, the shield shall be of glass.
0 s; w" p* f( l2 T- f! q3 F3 t+ vLuminaires designed to be used with self-shielded lamps only are exempt from this
9 @4 i/ h7 ?/ X- g8 z6 _! U# `requirement, but shall be marked with the appropriate symbol (see Figure 1). |
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