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引用第12楼柯南于2007-05-23 09:32发表的 :" Z* X: |* Y/ a2 k
4.21的意思是-灯具可以不带保护屏,如果是以下情况:
- s$ L4 U8 i( |; `+ V. \: w8 H H1,一般照明用的,电源电压下用的,符合EN 60432-2
' O+ g( F6 B x6 V/ \# A2,低压卤钨灯,符合EN 60432-3 " E0 l, D% k/ u
% n# V9 ?, I. s% b电压不是电源额定电压,如低电压,12V时,就需要装自带保护屏的卤钨灯泡了??----高压都说不怕炸了,还怕低压12V?
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- r5 e/ O' E# w/ l标准如下: 4.21 Protective shield (tungsten halogen lamps) # w6 V. i2 q. m* v. w0 t7 c, G
4.21.1 Luminaires incorporating tungsten halogen lamps, without an integral outer envelope, shall be fitted with a protective shield except when the lamp is: ; [( W y G# g: H. R' _
– a mains voltage (general lighting source) replacement lamp;* or ( }; d5 z1 E" Q4 ^' |: ^. Y
– a low pressure tungsten halogen lamp as specified in IEC 60432-3.
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3 j5 v- ~8 w: S2 J, |7 U& c }仔细看了一下,原来low pressue不是low voltage,是低气压不是低电压。 |
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