Emergency Power supply , Emergency power , EPS. ModelSDS-0.5KWSDS-1KWSDS-1. ... 5% 220V±5% single phase three routeFrequency(Hz)Under emergency,50HZ±0.5%?Under normal, the same with main ... request, can be less than 0.01 second)?WaveshapeUvUnder emergency: sine wave Under normal: the same with main electricityEmergent ... 410 510 620 700 780 850 940 Emergency Power supply (EPS) single- phase