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          
9 H2 Q2 i/ n2 J/ |/ Vthe 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          
8 n; R) M8 o* w. O# A" s1,06 times the rated voltage.          
If a luminaire has an outer surface likely to be positioned against part of a building (wall or          
7 w* F) U4 v' L  |6 Csimilar), with a temperature higher than 90 °C, but not exceeding 150 °C, the luminaire shall be          
0 Q( q, B: G# d3 |/ `provided with mounting instructions cautioning against such positioning.          
8 ~  h4 w/ \' a: M

wwnw_007

Luminaires with limited surface temperatures .....................
- f# U% H6 `  S  O- M( YFigure 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