... sine wave output 3.Excellent load feature 4.Perfect protection HT-HM series(3/3) Low Frequency Online UpsBrief introductionHT- ... the world, it is really the first-class product. HT-HM series UPS be widely applied to the telecommunication, bank ... 1Unbalanced load voltage±5%Overload Protection125%10 m , 150%1S, 200%200 msEfficiency95%(full load)BypassPhase3phase+NNominal voltage220/380VAC,230/400VAC,240 ...