... frequency50Hz±10%,60Hz±10%Input overtone current6pulses rectifier<30% 12pulses rectifier plus filter <5%Charge modeConstant current first ... -1980kg 4.certification 5.About us Foshan Baykee New Energy Technology Incorporated Company (Shenzhen Branch) was ... .Production Range: UPS, three phase (10kva~800kva), single phase(300va~20kva), three phase in and single phase out(6kva~80kva), online and ...