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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。6 {1 }6 g. y/ |/ x' Y
1.2.71" y7 s- u, V9 }, H
self-shielded lamp
: ~/ h7 _& ?, h8 X8 p2 J; x% ^tungsten halogen lamp or metal halide lamp for which the luminaire needs no protective shield
: x ~: v5 U" O s) Qfor protection against UV emission or lamp shattering; `: Z! G4 I; J* q# |! f
4.21 Protective shield
# Q& t( u- ~; Q. U" g4.21.1 Because of the possible risk of lamp shattering, luminaires designed for tungsten' Y! C( v' Q" ]8 k" Z1 X: Y
halogen lamps and luminaires designed for metal halide lamps shall be fitted with a protective8 X/ m% s- U* P. ?
shield. For tungsten halogen lamps, the shield shall be of glass.# S4 n/ D: Z* C* \" S, @. ]
Luminaires designed to be used with self-shielded lamps only are exempt from this, b5 K5 a( w' T& e5 k5 Y! x; d% J
requirement, but shall be marked with the appropriate symbol (see Figure 1). |
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