内置式的驱动器外壳也标Tc
其实不是想问tc 的问题，你们说着说着就都到tc了 我是想知道这个测试你们一般都怎么操作的来着·~ The LED module shall be switched on and the power monitored (at the input side) and
increased until 150 % of the rated voltage, current or power is reached. The voltage or the
current shall be increased until 150 % of the rated power is reached. The test shall be
continued until the LED module is thermally stabilised. A stable condition is reached, if the
temperature does not change by more than 5 K in 1 h. The temperature shall be measured in
the tc point. The LED module shall withstand the overpower condition for at least 15 min, the
time period of which can lie within the stabilisation period if the temperature change is ≤ 5K.
If the module contains an automatic protective device or circuit which limits the power, it is
subjected to a 15 min operation at this limit. If the device or circuit effectively limits the power
over this period, the module has passed the test, provided the compliance (4.1 and last
paragraph of 13.2) is fulfilled.
After finalising the overpower mode, the module is operated under normal conditions until
thermally being stable.
A module fails safe if no fire, smoke or flammable gas is produced and if the 15 min
overpower condition has been withstood. To check whether molten material might present a
safety hazard, a tissue paper, as specified in 4.187 of ISO 4046-4, spread below the module
shall not ignite.
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