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stey 发表于 2018-4-23 15:09% A; [# F: Y' v4 M: u
CEC的PF也是0.9, 带调光的灯具PF必须达到0.9, 频闪要符合Joint Appendix JA10, Table JA-10-1的要求,即F ... 2 F& n) M: V Z
我看完了,所有关于power factory和flicker的有关内容。你的回答很正确。不过有两个专业术语不是很确定,能否帮忙解答一下。the light source shall have a power factor equal to or greater than 0.9 when tested ast its full out. 这里的light source应该是包括灯具和光源吧(从预警判断像是)。JA8.4.6 是关于调光的, Light source in combination with specified control shall provide “reduced flicker operation” when tested at 100 percent and 20 percent of full light output, where reduced flicker operation is defined as having percent amplitude modulation (percent flicker) less than 30 percent at frequencies less than 200Hz, tested according to the requirements in Joint Appendix JA-10. 这里specified control 包括调光器吧? |
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