|
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。
) v; w) u9 ^( Q1 `/ H( H1.2.719 H- z. k% j, q6 U; O1 H# J, h3 t
self-shielded lamp
$ @3 ~3 K- l% j; D* v) I0 D) Ktungsten halogen lamp or metal halide lamp for which the luminaire needs no protective shield
! E9 H9 [7 a, {8 {9 lfor protection against UV emission or lamp shattering
8 \# ^+ ^1 w$ \6 g; Z- o4.21 Protective shield* f4 s8 ^7 y! v* e$ J: @
4.21.1 Because of the possible risk of lamp shattering, luminaires designed for tungsten$ v4 u5 ]( N }) u0 _; A1 A- t
halogen lamps and luminaires designed for metal halide lamps shall be fitted with a protective
n" g% R4 R" g' o, ashield. For tungsten halogen lamps, the shield shall be of glass.
2 b% t1 p/ n+ o! c" m9 X+ f3 t& n cLuminaires designed to be used with self-shielded lamps only are exempt from this* N, J' |* o/ k! \ Q f3 o$ R
requirement, but shall be marked with the appropriate symbol (see Figure 1). |
|