The Xantrex XKW8-125 is a programmable DC power supply delivering 1000 W of stable, variable output power in a compact 1U form factor. Built on high-frequency switching regulator technology, it serves research, product development, and production test environments requiring high power density and precise output control. The unit operates from 200–250 VAC single-phase or 190–250 VAC three-phase input with selectable 115/230 V configuration.
Technical Specifications
Output Ratings
• Voltage: 0–8 V
• Current: 0–125 A
• Power: 1000 W
Regulation & Accuracy
• Line regulation (voltage/current): 8 mV / 125 mA
• Load regulation (voltage/current): 8 mV / 125 mA
• Meter accuracy—voltage: 0.5% of Vmax + 1 count; current: 1.35 A
• Output noise and ripple (20 Hz–20 MHz): 50 mV p-p / 10 mV rms
• Drift (8-hour soak, post 90-minute warm-up): 4 mV voltage / 62.5 mA current
• Temperature coefficient: 1.6 mV/°C voltage / 37.5 mA/°C current
Protection & Output
• Over Voltage Protection adjustment: 0.4–8.8 V
• Output capacitance: 66,000 µF nominal
• Output-to-chassis capacitance: 200 nF nominal
• Switching frequency: 30 kHz nominal (60 kHz output ripple)
• Warm-up to stable output: 5 s maximum
Environmental
• Operating temperature: 0 to 50 °C
• Storage temperature: –55 to 85 °C
• Humidity: 0 to 80% RH, non-condensing
– Key Features
• Remote on/off and interlock via TTL-compatible input or contact closure (12–250 VAC / 12–130 VDC)
• Analog programming: 0–5 kΩ resistances or 0–5 V / 0–10 V sources; 0–1 mA current sources
• Remote voltage and current monitoring: 0–5 V / 0–10 V outputs at 1% accuracy
• Remote sense capability: 1 V/line with line drop compensation
• Front-panel 10-turn potentiometers for manual voltage and current adjustment
• Optional GPIB-XKW3 and ISOL-XKW3 interface cards for expanded control
– Typical Applications
Research and development, component characterization, burn-in testing, and production acceptance testing requiring precise, programmable DC power at high current density.
– Compatibility & Integration
19-inch rackmount package; 1.75 inch height (1U). Supports isolated remote programming and GPIB automation via optional interface modules.
