The Sorensen SRL10-50 is a fan-cooled DC power supply for laboratory and industrial testing, development, and repair applications. It delivers 50 A at 10 V maximum output with precise voltage and current regulation. Automatic crossover between constant voltage and constant current modes eliminates manual switching. The unit features tight line and load regulation, low output ripple, and fast transient response. Built-in adjustable crowbar overvoltage protection can be checked or adjusted from the front panel without disrupting AC input or load connections.
Technical Specifications
Output Performance – Constant Voltage Mode:
• Voltage regulation (line and load combined): ±0.01% or 2 mV, whichever is greater
• Voltage stability (8 hours post warm-up): ±0.025% + 0.5 mV
• Temperature coefficient: ±0.01% + 0.2 mV/°C
• Output ripple (RMS): 200–700 µV
• Transient response: 150 µs typical to ±10 mV for 0–100% step load change
• Maximum output voltage: 10 V Output Performance – Constant Current Mode:
• Current regulation (line or load): ±0.02% + 6 mA
• Current stability (8 hours post warm-up): ±0.03% + 10 mA
• Temperature coefficient: ±0.01% + 2 mA/°C
• Output ripple (RMS): 0.5–10 mA
• Maximum output current: 50 A
• Minimum current: adjustable to zero AC Input:
• Standard input: 105–125 V AC, single phase, 47–63 Hz (14.7 A max)
• Optional inputs: 190–230 V AC (M1 option, 8.0 A max) or 210–250 V AC (M2 option) Protection & Integration:
• Overvoltage protection: adjustable crowbar, 10 µs response
• Remote sensing: rear terminals, maximum 1 V drop per load lead
• Programming: rear terminal board for voltage/current mode and external control
• Series operation: up to 200 V DC
• Parallel operation: master-slave or straight parallel, up to 3 units
• RFI compliance: MIL-I-6181D Physical & Environmental:
• Dimensions: 6-31/32″ W × 21″ H × 17.34″ D (177 mm × 533 mm × 440.5 mm)
• Operating temperature: 0–70°C
• Storage temperature: -40–85°C – Key Features • Automatic voltage/current crossover eliminates mode selection complexity
• Voltage programming: standard 1 V per volt; external components allow adjustment to 1000 Ω per volt
• Current programming: 1000 Ω programs full rated output
• Low ripple enables sensitive circuit testing
• Fast transient recovery for dynamic load conditions – Typical Applications Circuit development and validation, component characterization, battery charging, electrochemical cell operation, production testing. – Compatibility & Integration Series stacking to 200 V DC and parallel operation (up to 3 units) support multi-rail and high-current test configurations. Remote sensing compensates for lead voltage drops. Rear terminal board accommodates external programming and control integration.
