... lcd Online HF double conversion advanced DSP technology Introduction:Power Castle (America) Series Online HF UPS 4-10kva, is DSP controlled ... /120V,127V power grid net. Perfect Application:Network, data centre, servers and workstations, office etc.Main Features:1)High Frequency and ... online double conversion2) Fully digitized control technology, high stability;3) DC192/240V and Output PF 0.84) ...