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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。5 e4 s, {* o8 f& _- Z; O
1.2.71
# o9 V9 O: G0 O& Hself-shielded lamp B1 a: f5 w8 s1 d O4 \
tungsten halogen lamp or metal halide lamp for which the luminaire needs no protective shield
0 ?8 \ j* L, U9 A- Pfor protection against UV emission or lamp shattering4 u+ }3 h- P1 }7 q! \9 M
4.21 Protective shield) |& ^$ m. Q! l7 P {
4.21.1 Because of the possible risk of lamp shattering, luminaires designed for tungsten" {" s9 ~; ]5 y: E9 \* Z2 g ^: b, q
halogen lamps and luminaires designed for metal halide lamps shall be fitted with a protective- Z9 G2 `+ n2 n7 ~
shield. For tungsten halogen lamps, the shield shall be of glass.9 }' N* A U0 }4 `7 A
Luminaires designed to be used with self-shielded lamps only are exempt from this
: x; f: E7 | e" qrequirement, but shall be marked with the appropriate symbol (see Figure 1). |
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