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 Q0 H1 }* Q5 T6 k2 H# A: Jthe 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          
1,06 times the rated voltage.          
9 F" |  Y3 j6 e- H, r" ~If a luminaire has an outer surface likely to be positioned against part of a building (wall or          
2 E1 m9 K4 p6 t3 T  ?5 p* H5 t, d9 Tsimilar), with a temperature higher than 90 °C, but not exceeding 150 °C, the luminaire shall be          
  P9 K. f% k0 c% o% Iprovided with mounting instructions cautioning against such positioning.          
, j( k+ G7 g" b- P- B! [

wwnw_007

Luminaires with limited surface temperatures .....................
* E& t  k$ s( c# i; PFigure 1 – Symbol
–––––––––
D

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