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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。% s- o/ ~' I$ E# W# n4 l# n
1.2.71/ d& B: E( ]: \4 E, A) O
self-shielded lamp
P% W2 q* z, U* l% T3 P( wtungsten halogen lamp or metal halide lamp for which the luminaire needs no protective shield
( t* w0 o) l- c( y* y+ ^for protection against UV emission or lamp shattering$ D1 ^( D; R, ?) |
4.21 Protective shield2 J3 o7 \6 O0 N, V3 ^
4.21.1 Because of the possible risk of lamp shattering, luminaires designed for tungsten' U2 y7 [, C& r" O6 V& ^
halogen lamps and luminaires designed for metal halide lamps shall be fitted with a protective
2 W l8 a+ Q" x" H6 n, m" R% f: Fshield. For tungsten halogen lamps, the shield shall be of glass.
' K$ a- q! V6 m |& CLuminaires designed to be used with self-shielded lamps only are exempt from this
# X# t5 L+ Z/ u* F- Mrequirement, but shall be marked with the appropriate symbol (see Figure 1). |
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