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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。
4 p- q' T$ Z/ |% a+ p1.2.71
6 Z6 ?( O! G, E" b% eself-shielded lamp/ I5 T: O( y0 C) S5 R8 z) g
tungsten halogen lamp or metal halide lamp for which the luminaire needs no protective shield
( b4 K7 _" }( V7 _1 R$ g Ofor protection against UV emission or lamp shattering4 ?" @0 `" d9 b3 x& p8 a
4.21 Protective shield
' H3 |+ R5 v. H* g4.21.1 Because of the possible risk of lamp shattering, luminaires designed for tungsten
, {' r, T% N9 ?4 |" rhalogen lamps and luminaires designed for metal halide lamps shall be fitted with a protective
# s; p# a! d8 i# n# ]shield. For tungsten halogen lamps, the shield shall be of glass.
3 {8 \6 d- s6 nLuminaires designed to be used with self-shielded lamps only are exempt from this
) ]9 U5 `8 s- r4 hrequirement, but shall be marked with the appropriate symbol (see Figure 1). |
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