UL 1993 最大温度 table 8.2 b 如何理解?
b For a self-ballasted lamp, the temperature limit of a polymeric material may be increased above the established RTI value for70,000 hours to correspond with the maximum expected lamp life. For fluorescent lamps, 5,000 to 10,000 hours life is typical. See
UL 746C clauses on RTI for discussion of this technique.
有一个LED灯,测温升,然后不知灯头的绝缘体那里的温升应该是多少。
表中只写了a.b.但厂家未提供外壳的温度参数。
B看不太懂。求解答!
不知道就以黄卡信息为准 请供应商提供灯头的材质资料去找对应的黄卡比对就行了!
页:
[1]