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          
$ v0 H# X* T5 ~! v' ?For luminaires with the symbol, a temperature of 110 °C on all horizontal surfaces ofD          
  V1 X: {/ d/ u3 [, s& uthe 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.          
If a luminaire has an outer surface likely to be positioned against part of a building (wall or          
/ E/ R4 x& Z6 n1 lsimilar), with a temperature higher than 90 °C, but not exceeding 150 °C, the luminaire shall be          
6 @. U0 a' y& G# ^4 mprovided with mounting instructions cautioning against such positioning.          
- L4 y( [& A, I) F* |- g

wwnw_007

Luminaires with limited surface temperatures .....................
7 q- G: l( V0 N$ d3 MFigure 1 – Symbol
–––––––––
- l/ t7 A* o* n$ e/ rD

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