IEC60598 4.21 Protective shield 冲击测试疑问

EVERGREEN21

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最近看了ITS 的两份灯的CB报告, 其中A款的灯由图A的低压Halogen lamp,加上玻璃罩组成, 另外的B款由图B的240V 35W halogen lamp, 没有玻璃罩组成:
' s3 K: D; t) ~, Y但报告中IEC60598-1 4.21中
4 I5 V4 `8 c5 y6 s- iA款: For self-shielded lamps only , 结果PASS
! H% V9 c; t! K5 w) V) q1 CB款:  Self-shielded lamp used,  结果NA
# g, w: q" D/ e: R  Y6 O3 k
各位高人,能告诉我为什么结果不一样吗? 谢谢啦!

EVERGREEN21

参考(IEC60598-1 4.21)
3 I: B" c. x4 Y7 g# M; [
4.21 Protective shield
* f/ d2 K* A0 Y( L, s
4.21.1 Because of the possible risk of lamp shattering, luminaires designed for tungsten halogen lamps and luminaires designed for metal halide lamps shall be fitted with a protective shield. For tungsten halogen lamps, the shield shall be of glass. Luminaires designed to be used with self-shielded lamps only are exempt from this requirement, but shall be marked with the appropriate symbol (see Figure 1).
% j6 J% I9 J' n8 qNOTE 1 Lamps needing a protective shield as part of the luminaire construction are supplied with an appropriate
cautionary notice or their packaging is marked with the symbol shown hereafter:
( Y1 r( H: I& ~NOTE 2 For lamps not needing a protective shield as part of the luminaire construction (self-shielded lamps) their
packaging is marked with the symbol shown hereafter:
0 T. S* H. Z* |9 h8 U1 @
0 O/ s- e. A1 B; ^8 H/ Y4.21.2 Parts of the lamp compartment shall so be designed that particles from a shattering
lamp cannot impair safety.

* t/ j% @/ v+ Z( l# z4.21.3 All openings in the luminaire shall be such that no parts of a shattered lamp can leave
' s9 P/ N7 r5 }) P/ d8 Xthe luminaire by a direct path (direct line of sight), including the rear of recessed luminaires.

7 k7 S/ P. K1 @. u$ P9 B* U2 [
4.21.4 Compliance with 4.21.1 to 4.21.3 is checked by inspection and by the following tests:
– the protective shield shall comply with the impact test of 4.13.1 with the impact energy of
# J2 T6 N& A( g) U8 B6 JTable 4.3 for fragile parts;
3 y  g$ D4 v6 A1 q. Y( `( x– parts of the lamp compartment, if of insulating material, shall comply with the resistance to
flame and ignition test of 13.3.2.
8 P/ _/ i8 Q7 s8 T4 N3 Y" JNOTE 1 This requirement is intended to improve safety by eliminating the hazards due to chance failure of a lamp
or incorrect application. Existing open luminaires not fitted with a protective shield do not necessarily present a
hazard.
1 g$ {2 c. B9 E: Y  M/ ?7 bNOTE 2 The impact test of 4.13.1, which is performed from the outside, is regarded to be more severe than the
impacts of glass particles. A specific test simulating the latter is therefore not necessary. In case the mounting
means of the glass shield is solely designed to withstand impacts from the inside, the test of 4.13.1 should be
performed in that direction.

joanna01

A的光源是低压Halogen lamp，所以灯具需要加protective shield。此灯具符合4.21的要求，所以判定PASS.
而B的光源就是self-shielded lamps，所以可以不要再加protective shield。所以判不适用NA

EVERGREEN21

对A 款 报告中"For self-shielded lamps only" 什么意思?
( H0 O# L  V3 F% C9 ^2 G+ A" n( @
) ?$ v8 I/ R% K1 zA 款是冲击玻璃罩吧?

okjun

"For self-shielded lamps only"是写错了。

ediqi

OK ,了解

linbaoshi

这看上去是宜家的供应商在问关于宜家的产品的问题哦

gree76

报告写的没错, 用词不一样,情况一样. 两种灯胆如果是低气压灯胆或双层防爆灯胆,都不用做额外的保护.