HID镇流器的输出测试

天使推荐

最近刚做完几款HID嵌灯,发现一个问题,UL153中限制灯泡的实际功率不能超过5%,但有一个例外情况,UL1598却没有此例外,UL1574更奇怪,54.2.2与54.2.3有什么不同?
54.2.2 A nominal system for an HID luminaire assembly shall be a combination of components such that, when connected to the supply voltage rated for the ballast and measured as specified in 54.2.3, the lamp operates at its marked wattage rating ±5 percent. The capacitance of the capacitor is to be within ±5 percent of the capacitance rated for the ballast.
Exception: A lamp need not operate within ± 5 percent of its marked rating when operated by a balast intended to operate the lamp at other than the lamp’s marked rating. Such a construction is to be documented by the ballast manufacturer.
54.2.3 The test lamp, when evaluated in open air, using the same ballast and capacitor that will be used in the luminaire shall operate within 5 percent of the rated lamp wattage, after a 15 minute stabilization period. The voltage may be adjusted to be within the 5 percent range, and this voltage shall be used as the test voltage.
另外,镇流器的输出测试应该使用什么仪器?

oahemr

,“镇流器的输出测试应该使用什么仪器?”
真有效值功率表（许多多功能数字表都可以）

oahemr

标准前后没有看.单看这两段,54.2.2 要求试验时实际灯功率应在额定灯功率±5%的偏差范围内;54.2.3是说要保证试验时实际灯功率应在额定灯功率±5%的偏差范围内,可以通过调节电压的方式获得,但电压调节范围也在额定电压的±5%之内(否则应换电器或灯).

fangzi33

,“镇流器的输出测试应该使用什么仪器?”
除了电参数表外，还要测峰值电压值，所以还要用到示波器

天使推荐

因为镇流器是高频的,所以一般的功率仪是测不到的,用示波器测过电压,但是电流没有测到,万用表也测不出.