Sorensen DCR10-120B

The Sorensen DCR10-120B is a 1.8 kW DC power supply engineered for industrial test, burn-in, and development applications requiring precise voltage and current control. It delivers 0–10V DC output at up to 120A with SCR-regulated performance, automatic CV/CC crossover, and line/load regulation of 0.1% or 5mV (voltage) and 0.1% of Imax (current). The unit features dual analog panel meters, remote sensing and programming capability, and operates from standard 103–127 Vac single-phase input with optional 208/220/230 Vac variants. Convection-cooled design supports bench or rack mounting across 0°C to 71°C. Overvoltage protection, overload shutdown, and circuit breaker protection are standard or optional. The supply supports series operation to 200 Vdc and parallel operation up to four units.

– Technical Specifications

• Output: 0–10V DC, 120A maximum, 1.8 kW
• Voltage regulation (line & load combined): 0.1% or 5mV, whichever is greater
• Current regulation (line & load combined): 0.1% of Imax
• Voltage temperature coefficient: 0.015%/°C of Emax
• Current temperature coefficient: 0.03%/°C of Imax
• Voltage stability: 0.1% Emax over 8 hours (post 30-minute warm-up)
• Current stability: 0.15% of Imax over 8 hours (post 30-minute warm-up)
• Remote sensing: Maximum 5% of Emax or 3V drop per load lead (whichever is smaller)
• Transient response: 50 ms typical (0–10V)
• Input: 103–127 Vac single phase standard; 208/220/230 Vac options available
• Cooling: Convection
• Weight: Approximately 70 lbs
• Operating temperature: 0°C to 71°C
• Storage temperature: −40°C to +85°C

– Key Features

• Automatic constant voltage/constant current crossover
• Remote voltage or current programming via resistance or voltage signal
• Dual analog panel meters for real-time monitoring
• Optional overvoltage protection (factory or field-installable)
• Unit shutdown circuit against overload and short circuit
• Circuit breaker main power protection

– Compatibility & Integration

• Series operation: Up to 200 Vdc maximum
• Parallel operation: Four units maximum