Jeidar DT series 3/3phase IGBT rectifier and IGBT inverter UPS. a big thing with good materials. 1) DT series R,S,T All the 3phase are use IGBT module(from Mitsubishi), not just in R phase. and they are totally 3phase independent power control. means one phase have problem could pull the power module board out replcement, do not influence 2 other Phases. any phase miss or fault will Alarm and show fault on LCD 2) this UPS is transformer free model, but equipped 12pcs inductors for distortion and noise filting, which makes the THDI within 4% and overall efficiency under ECO model 98% 3), there are 9pcs speed control fans with size 120*120*38mm, each one have problem will be Alarm independently, and install in cacoordance with data center ventilation Standard 4), 2 DSP control in power section, another 1 DSP control in the charging board to control Bus+ and Bus- charging. the charger could control +/- in balance, which not make the battery bulge due to unbalance charging. battery qty also adjustable from 28-32pcs, 10-40KVA can put maximum 64pcs 7/9Ah battery internal 5) the main components from Internation famous brand, we buy the IGBT from mitsubishi, Cooling fan from Delta, Mccb from LS , Fuse from Eaton bussman etc #UPS #jeidarups #onlineUPS #highfrequencyUPS #UPS60KVA #UPS80KVA #UPS100KVA #UPS120KVA #DT #upsonline #upsmanufacyure #UPSsupplier #shenzhen #Kotohirasystem #uninterruptiblepowersupply https://www.instagram.com/p/Ce0glrMv5bv/?igshid=NGJjMDIxMWI=