请问这是什么符号？代表什么意思！

amote2008

???没见过

贺小梅

看来不是电气设备用的符号了，我翻了好久这个标准都没看到喔。。手酸。。

4sea

D-mark, means luminaire with limited surface temperature, it should meet the particular requirement defined in IEC 60598-2-24

wwnw_007

24.12.1 Temperature limits – normal operation          
For luminaires with the symbol, a temperature of 110 °C on all horizontal surfaces ofD          
5 N, {4 g; i, i5 }! @the luminaire exposed to the accumulation of dust shall not be exceeded, at 1,06 times the          
rated voltage and, on all vertical external surfaces, the maximum shall not exceed 150 °C at          
' S% M. e: r6 V. _, z8 o1,06 times the rated voltage.          
) x" s4 U9 q/ x1 c( y! k# vIf a luminaire has an outer surface likely to be positioned against part of a building (wall or          
) v' ^. R1 U: Csimilar), with a temperature higher than 90 °C, but not exceeding 150 °C, the luminaire shall be          
8 t1 O! r2 j% a1 S  X0 Nprovided with mounting instructions cautioning against such positioning.          
5 C, T5 ]" j8 J, [7 g

wwnw_007

Luminaires with limited surface temperatures .....................
9 |( g' f0 w+ v; I$ LFigure 1 – Symbol
–––––––––
: ?+ K" D, w  U6 \* f/ f! oD

shenkaida

原来是限制表面温度的标注，又学了一招

kevin.lili

英语英语，我啥时候能看懂你啊！

kellyxu_2000

同学习