xiaokuikui 发表于 2021-12-14 13:51

UL class指的是什么

请问各位大佬们,有些照明公司的产品宣传网写着UL CLASS:CLASS Ⅱ是指的什么意思呀?灯管有这种分类等级吗?如果要弄清楚这个概念,应该看哪些标准?

306133580 发表于 2021-12-15 12:39

“Class 2”与“Class II”这两个名词发音一样,但含义确大相径庭。
“Class 2”是UL 8750对LED驱动器输出的定义,“Class 2”输出的LED驱动器其输出电压,电流,功率值都是有限的,意味着其输出是安全的。(具体的限值请参阅标准)。
而“Class II”是IEC/EN标准里对防触电等级的定义,防触电保护没有依靠接地来实现,也没有仅仅依靠基本绝缘,而是依靠双层绝缘或加强绝缘,就是常见的“回”形标记。所以,同样的发音,不同的写法,不同的含义。

xiaokuikui 发表于 2021-12-15 13:24

306133580 发表于 2021-12-15 12:39
“Class 2”与“Class II”这两个名词发音一样,但含义确大相径庭。
“Class 2”是UL 8750对LED驱动器输出 ...

受教了,谢谢解惑

fasten 发表于 2021-12-16 18:56

UL1310
5.3 CLASS 2 – A source having limited voltage and energy capacity. Requirements for voltage and energy capacity limitations are as indicated in this standard. See the Maximum Output Voltage Test, Section 28, and the Output Current and Power Test, Section 30.


IEC 60598-1:2020
1.2.23
class II luminaire
luminaire in which protection against electric shock does not rely on basic insulation only, but in which additional safety precautions such as double insulation or reinforced insulation are provided, there being no provision for protective earthing or reliance upon installation conditions

zouyx0755 发表于 2021-12-18 14:51

YES!!!!!!!

Berryang 发表于 2021-12-20 08:35

各标准,定义基本相同~~
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