LED功耗consumptions47W系统功耗SystemConsumptions58WLED初始光通量LEDinitialfluxWWPWCW 3854Lm3995Lm3901Lm功率因数Powerfactor＞0.98总谐波失真Totalhamornicaldistortion 9%电源效率Powereffciency＞82%灯具效率Powereffciency＞91%安装高度installationheight6M8M10M平均照度Averageilluminance＞28.5lux＞13.8lux＞8.6lux光斑面积llluminanceArea￠9.5M￠15.5M￠19M照度均匀度llluminanceUniformity＞0.4