Sorensen DCR300-9B

The Sorensen DCR300-9B is a 2700 W programmable DC power supply engineered for precision testing, evaluation, and industrial control applications. It delivers 0–300 Vdc and 0–9 A with exceptional regulation and rapid transient response. The unit operates in Constant Voltage and Constant Current modes with automatic crossover, supported by remote sensing and programming capabilities for voltage and current adjustment. Input flexibility spans 187–229 Vac single phase at 50/60 Hz operation without de-rating.

– Technical Specifications

Output Performance
• Output power: 2700 W
• Voltage range: 0–300 Vdc, adjustable
• Current range: 0–9 A, adjustable
• Voltage regulation (line and load combined): 0.05% or 75 mV whichever is greater; typically 0.03% for 100% load and full line voltage change
• Current regulation (line and load combined): typically 0.03% for 100% load and full line voltage change; 0.15% of maximum for stability; < 0.01% + 10 mA
• Voltage ripple and noise: < 3 mVrms, < 50 mVp-p
• Voltage programming resolution: 0.1 V
• Current programming resolution: 1 mA
• Constant Voltage stability: 0.1% of set voltage, maximum, over 8 hours after 30-minute warm-up
• Constant Current stability: 0.15% of set current, maximum, over 8 hours after 30-minute warm-up
• Voltage temperature coefficient: 0.015%/°C of set voltage, maximum
• Current temperature coefficient: 0.03%/°C of set current, maximum
• Transient response: 50 ms typical for 50% load change

Input Specifications
• Input voltage: 187–229 Vac single phase (±10% tolerance)
• Input frequency: 50/60 Hz, no de-rating required

– Key Features

• Automatic crossover between Constant Voltage and Constant Current operating modes
• Remote voltage and current programming capability
• Manual and automatic control modes
• Remote sensing for load compensation
• Low output ripple and noise performance

– Typical Applications

Precision device characterization, power electronics testing, industrial process control, and load evaluation requiring stable, programmable DC outputs with fine-grained current and voltage adjustment.