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SUPERNOVA Three phase U.P.S. 160, 200, 250, 300, 350, 400 and 500 kVA The SUPERNOVA series is the latest technological novelty engineered by Powertronix R & D Department, covered by four PATENTS. The series has seven power ratings: 160, 200, 250, 300, 350, 400 and 500 kVA. These U.P.S are studied to protect large electrical installations, intelligent buildings, industrial plants, automated production lines, etc. This three phase Uninterruptible Power Supply Series has true on-line double conversion technology, high frequency PWN conversion, digital control, 0.99 power factor; low noise level, high efficiency and upgraded main-machine interface. The SUPERNOVA series has a special and innotive cooling system (Patent Nr. 002589) where the cooling fluid is circulating in a sealed circuit chilled by redundant cooling fans. This innovative feature is studied to eliminate the heat stress from the power components for a better performance of the U.P.S and efficiency improvement.