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b For a self-ballasted lamp, the temperature limit of a polymeric material may be increased above the established RTI value for
' @, M, S; t& F; m* S" Z70,000 hours to correspond with the maximum expected lamp life. For fluorescent lamps, 5,000 to 10,000 hours life is typical. See
* G' p1 ^/ G1 @8 X5 pUL 746C clauses on RTI for discussion of this technique.
' ]/ d7 s* h$ a2 Z( w: Q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。
- b3 i: m; h. k4 ^表中只写了a.b.但厂家未提供外壳的温度参数。
# \3 E1 T; k! p1 z) C* R7 q- iB看不太懂。求解答!7 {. @3 L& @6 S* s2 g4 W
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