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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。) L4 z Q7 K8 k, m$ m
1.2.71. Y$ n. d8 ~4 l) k7 K
self-shielded lamp
# c( v" J& T* g& F3 Qtungsten halogen lamp or metal halide lamp for which the luminaire needs no protective shield! f* e u1 a! m
for protection against UV emission or lamp shattering' {( p7 l2 u6 r# U, l$ B
4.21 Protective shield
* i4 g1 L4 u: U J5 x4.21.1 Because of the possible risk of lamp shattering, luminaires designed for tungsten+ C. ~% h7 O! q) I2 W" d" g
halogen lamps and luminaires designed for metal halide lamps shall be fitted with a protective
4 k4 X5 b) u+ s* F) T0 G& e9 Y) Oshield. For tungsten halogen lamps, the shield shall be of glass. c8 G4 A5 l- d) p0 }, x; S, K/ `
Luminaires designed to be used with self-shielded lamps only are exempt from this
( n: B3 n; Z4 ]8 frequirement, but shall be marked with the appropriate symbol (see Figure 1). |
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