Power-Reg & Ultra-Reg Product Details Specification Data Sheets Technical Drawings User manual Features ±3% Output Voltage Regulation Input Filter (-40 dB) Power-Reg: (<300 kVA) -120 dB    Common-mode Ultra-Reg: (<300 kVA) -126 dB    Common-mode High Efficiency Low Distortion Single Point Grounding Zero Current Tap Switching Excellent Voltage Regulation 2 year Factory Warranty Specifications   Sizes 15, 30, 50, 75, 100, 125, 150,175, 200, 225, 250, 300, 400,500, 625, 750, 875, 1000, and 1250   Input Voltage* 208 or 480 VAC, **480Y/277   Output Voltage* 208Y/120 or 480Y/277 VAC   Frequency* 60 Hz ±5%   Response Time 1 cycle typical   Harmonic Distortion 1% Max. Added at Switching Voltage Regulation Range   Input +10% to -26% of nominal   Output ±3% typ. ±4% maximum   Common-Mode -120 dB. (<300 kVA) -140 dB -146 dB or -156 dB available   Normal-Mode 40 dB/decade   Overload(Inrush) 200% of full load for 10 seconds; 1000% of full load for 1 cycle Transformer <300 kVA 3 phase computer grade, dual-shielded, isolation transformer >400 kVA 3 phase, copper wound, buck-boost transformer   Efficiency 96% at full loads; 98.5% at light loads   Load Power Factor 0.3 leading or lagging to unity   Audible Noise Meets or exceeds NEMA stan-dards Environmental   Operating Temp 32°F.(0°C.) to 104°F.(40°C.)   Storage Temp -4°F.(-20°C.) to 140°F.(60°C.)   Operating Humidity 10 to 90% non-condensing   Transformer Impedance 3 to 5% * Other voltages and frequencies available.        Copyright © 2002 Onlinepower, Inc. All rights reserved.