灯具ERP测试,怎样判断是否稳定
在积分球内测试,怎么判断灯具已经稳定了?光通量不超过多少?有标准规定吗?谢谢看功率，功率没有大的变动，则判定处于稳态。 zhongwen_lee 发表于 2018-7-27 18:02
看功率，功率没有大的变动，则判定处于稳态。
您说的是标准要求吗? 巴西389标准上有要求功率和光通量的要求,但是1194和244上好像查不到. 坐的讲解。 IEC62612里面有说明。
The LED lamp shall be operated for at
least 30 min and it is considered stable and suitable for test purpose, if the relative
difference of maximum and minimum readings of light output and electrical power
observed over the last 15 minutes is less than 0,5 % of the minimum reading. If the LED
lamp is pre-burned, it does not need to be operated for 30 min, and it is considered stable
if the readings of the last 15 min meet above requirement. 517121 发表于 2018-8-2 08:38
IEC62612里面有说明。
The LED lamp shall be operated for at
least 30 min and it is considered stabl ...
thanks a lot
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