因为找UL514D这个标准,才看到你的帖子,下载了仁兄的标准,不胜感激,作为回报,简单解释一下,不当之处,敬请谅解:
UL Requirement - 4.3.2.3.1
这部分要求的高压测试:2500VAC, 60Hz, 1分钟
FLAME PENETRATION TEST (5VA Test), UL514D, Para. 5.2.4
这部分要求的是5VA的阻燃测试
a) a cover plate shall not openly flame for more than 1 minute after the fifth application of the test flame;
5次加火焰测试后,样品无持续1分钟以上的明火
b) there shall not be visible flame on the surface of the cover plate opposite the surface to which the test flame is applied; and
加焰的另外一面无可见火
c) there shall not be an opening through the cover plate after the test
测试后,样品无烧透痕迹