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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。
* y3 G/ @; h6 A9 h0 ^* w& M1.2.71. \( g6 o$ ^+ [ x- ]
self-shielded lamp
! K5 ] l7 i) C. ctungsten halogen lamp or metal halide lamp for which the luminaire needs no protective shield3 o6 S' t9 u$ U1 n# f9 K
for protection against UV emission or lamp shattering
! H0 |+ o' j1 i( b0 _4.21 Protective shield
( _& M: ]/ k- u* J4 r+ U& t4.21.1 Because of the possible risk of lamp shattering, luminaires designed for tungsten
; @( P i" v1 b! N& ~8 f. \halogen lamps and luminaires designed for metal halide lamps shall be fitted with a protective: p; q, B: c$ s% K7 e
shield. For tungsten halogen lamps, the shield shall be of glass.3 d4 i- W7 C; V# w. {9 V. A$ k0 r; W
Luminaires designed to be used with self-shielded lamps only are exempt from this# p) P. \& \% H7 K: I, ?6 g
requirement, but shall be marked with the appropriate symbol (see Figure 1). |
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