The Lambda/TDK GEN 40-250 is a 10 kW programmable DC power supply engineered for industrial, laboratory, and OEM applications demanding precise voltage and current control. This 3U rackmount unit delivers 0–40 Vdc at 0–250 A with 83% typical efficiency and active power factor correction at 0.99. Voltage ripple and current noise are held to 0.02 Vrms and 0.25 Arms respectively (5 Hz to 1 MHz), ensuring clean output for sensitive loads. The GEN 40-250 operates from three-phase AC inputs (208 V, 400 V, or 480 V) across 47–63 Hz and includes automatic CV/CC crossover, adjustable overvoltage protection, and remote sensing for lead-drop compensation.
## Technical Specifications
**Output:**
• Voltage: 0–40 Vdc rated
• Current: 0–250 A rated
• Power: 10 kW
• Efficiency: 83% typical
• Voltage ripple/noise: 0.02 Vrms (5 Hz to 1 MHz)
• Current ripple/noise: 0.25 Arms (5 Hz to 1 MHz)
**Input:**
• 3-Phase, 208 V: 180–253 Vac
• 3-Phase, 400 V: 342–440 Vac
• 3-Phase, 480 V: 432–528 Vac
• Frequency: 47–63 Hz
• Power factor correction: 0.99 typical
**Environmental:**
• Operating temperature: 0–50 °C
• Package: 3U rackmount/benchtop
• Dimensions: 429 × 132.5 × 564 mm
• Weight: 44 kg typical
## Key Features
• CV/CC automatic crossover with adjustable current foldback and optional latch-off
• Adjustable over-voltage protection and under-voltage limit with readback
• Master/Slave parallel operation with active current sharing
• Remote sensing to eliminate lead-drop errors
• Fan speed control for reduced noise; zero-stacking capability
• Last Setting Memory or Safe-Start mode selection
• 16-bit programming and readback accuracy
## Interfaces & Control
• Standard: RS-232, RS-485
• Optional: LAN (LXI), USB, GPIB (IEEE 488.2 SCPI), isolated analog voltage/current control
• Analog programming: user-selectable 0–5 V or 0–10 V
• Remote Enable/Disable and Shut-Off control (opto-isolated)
• Digital encoder front panel with Local/Remote selection and output lockout
## Compliance
• EN60950-1, UL60950-1
• CE/UKCA marked
