LED 电源简易试灯盒
Simple LED driver test box
四表同屏读数
Four readings at once
- 交流电压：给 LED 电源或成品灯的供电电压
- 交流电流：被测品使用的总电流（有功 + 无功部分）
- 交流功率：即有功功率，判断电源是否「足功率」的依据
- 功率因数：有效功率占总功率的比率，出口合规必看
- AC voltage supplied to the driver or finished lamp
- AC current drawn in total, real plus reactive
- AC power — the real wattage that tells you if a driver is up to rating
- Power factor — the share of real power, key for export compliance
使用注意
Safety
- 保险丝作防爆保护；不亮时先检查熔丝，更换时必须拧紧灯座盖以免损坏座子
- 禁止触碰所有金属触点，防止触电
- Fused protection — tighten the cap when replacing fuses
- Do not touch live metal contacts
产品视图
Product views
电气参数（说明书摘录）
Electrical specs (from manual)
| 工作供电电源Supply | 110~220 ±10% VAC，50Hz |
|---|---|
| 交流电压表AC voltage | 0~300VAC，±0.5% |
| 交流电流表AC current | 0~2A，±0.5% |
| 输入功率Input power | 0~600W，±0.5% |
| 功率因数Power factor | 0~0.999 |
使用方法：把测试品接到「E14」「E27」或「交流负载」端子，拨动开关即可读出输入交流电压、电流与有效功率。
Connect the sample to the E14, E27 or AC load terminals and flip the switch to read input voltage, current and real power.
参数解读
Reading the values
- 交流电压：中国 220VAC 50Hz；美国、加拿大 120VAC 60Hz；日本 100VAC 50/60Hz
- 交流功率：即有功功率，常说的 3W、7W 驱动指的就是它，也是真正的耗电功率
- 功率因数：用来评价 LED 电源对电网的污染程度。美国能源之星规定 5W 以上灯具 PF>0.7；深圳 LED 产业标准联盟要求 <10W 时 PF>0.7，10~30W 时 PF>0.85，>30W 时 PF>0.9
- AC voltage: 220VAC 50Hz in China, 120VAC 60Hz in North America, 100VAC 50/60Hz in Japan
- AC power: the real wattage behind labels like "3W driver" — the energy actually consumed
- Power factor: Energy Star requires PF>0.7 above 5W; the Shenzhen LED alliance asks for PF>0.7 under 10W, >0.85 for 10~30W and >0.9 above 30W