The Sorensen DHP400-12 is a 4.8 kW programmable DC power supply delivering 0–400 VDC at 0–12 A for demanding test, integration, and laboratory applications. It operates in constant voltage, constant current, and constant power modes with 25 mV RMS ripple typical. The unit provides ±0.05% output stability after 8 hours warm-up and transient response within 2 ms for 30% step load changes.
Technical Specifications
Output Performance
• Output voltage: 0–400 VDC
• Output current: 0–12 A
• Output power: 4800 W
• DC ripple (RMS, typical): 25 mV
• Line regulation: 0.1% voltage, 0.5% current
• Load regulation: 0.1% voltage, 0.5% current
• Stability: ±0.05% at fixed line, load, and temperature (post 8-hour warm-up)
• Temperature coefficient: 0.02%/°C voltage, 0.03%/°C current
• Transient response: 2 ms to steady state (30% step load)
Programming & Control
• Internal sequencing: 9 auto-sequence steps, 1 second to 99,999 seconds per step
• Programming resolution: 0.3% voltage and current of full scale
• Programming accuracy: ±(0.10% + 0.3% voltage), ±(0.3% + 0.3% current)
• Readback resolution: 0.3% of full scale
• Overvoltage protection: 0–10 V adjustable input, 0.5% full scale response
• Remote control: Contact closure on/off (6–120 VDC, 12–240 VAC), TTL/CMOS compatible
• Remote sense: Voltage sensing at load; 3% line drop maximum (1 V for 5–15 V units, 3 V for others)
Interfaces & Integration
• Standard analog interface included
• Digital control options: IEEE-488.2, RS-232, isolated analog input (configurable combinations)
• Isolated analog programming for noise immunity and ground loop mitigation
• Output voltage and current monitoring, summary fault status reporting
Physical
• Dimensions (Case I): 3.5″ H × 19″ W × 18″ D
• Weight (Case I): 45 lbs maximum
– Key Features
• Multi-mode operation (CV, CC, CP) supports diverse load conditions
• Precision voltage and current readback for validation and telemetry
• Flexible sequencing enables automated test protocols up to ~27.78 hours per step
• Remote sensing eliminates line-drop errors across distributed loads
• Multiple interface options support lab benches, system integration, and automated test racks
– Typical Applications
• Accelerated life testing of electronic components and assemblies
• Device characterization and burn-in validation
• Battery charging and conditioning
• Power conversion efficiency measurement
• Load simulation and stress testing in production environments
– Compatibility & Integration
Analog front-panel control pairs with optional digital interfaces (IEEE-488.2, RS-232) and isolated analog inputs for flexible integration into standalone, networked, or high-noise environments. Remote sense and fault monitoring enable closed-loop feedback in demanding applications.
