Description
The Sorensen XFR 40-70 (historically also branded under Xantrex) is a high-performance, 2.8 kW low-profile programmable DC power supply. It is engineered for demanding research, product development, automated test equipment (ATE), process control, electroplating, and burn-in applications requiring high power density and broad voltage/current adjustments.
Technical Specifications
| Parameter | Value |
| Manufacturer | Sorensen (AMETEK / formerly Xantrex) |
| Product Series | XFR Series (2.8 kW Low-Profile Model) |
| Model Number | XFR 40-70 (XFR40-70) |
| Output Voltage Range | 0 to 40 VDC |
| Output Current Range | 0 to 70 A |
| Total Output Power | 2,800 W (2.8 kW) |
| AC Input Voltage | 190–264 VAC, 1-phase (20.5 A to 24.3 A typical, 47–63 Hz); Optional 3-phase 208 VAC (M2 option) |
| Technology | Zero-voltage “soft” switching topology (minimizes switching transients and near-linear noise performance) |
| Operating Temperature | 0°C to +50°C (delivers full power across the entire range without derating) |
| Chassis Form Factor | Standard 19-inch rack-mount (Height: 3.5 inches / 2U, Depth: 21 inches) |
| Weight | ~33 lbs (15 kg) |
Supply Terms & Commercial Details
- Availability: Widely traded across industrial test equipment markets, secondary surplus providers, and specialized calibration/rental houses.
- Lead Time: In-stock units typically ship within 3 to 5 business days.
- Warranty: Standard pre-owned or surplus warranties generally range from 30 days to 1 year depending on whether the unit is sold working-surplus, certified-refurbished, or calibrated.
- Condition: Available in Used, Fully Tested Refurbished, or Calibrated condition with test validation reports (confirm specific calibration state upon inquiry).
- Pricing Note: Pricing fluctuates based on market demand, inclusion of digital interface options (such as GPIB or RS-232 cards), and current calibration status; contact your test equipment supplier for a formal quotation.
Engineering & Integration Guidance
When integrating or operating the XFR 40-70 power supply in a test rack or laboratory bench, observe the following parameters:
- Thermal Management & Stacking: Thanks to efficient soft-switching topology and internal thermal management, units can be vertically stacked in a 19-inch rack cabinet without needing forced ventilation spacing between individual modules.
- Remote Sense Connections: Utilize the built-in remote sense terminals (supporting up to 5 V per line voltage drop compensation) to maintain tight load regulation directly at the DUT (Device Under Test) connection points.
- Analog and Digital Programming: Standard models support front-panel 10-turn potentiometer controls and isolated analog programming/monitoring (voltage/resistance sources). Optional interface cards (such as GPIB, RS-232, or Ethernet) can be integrated for automated ATE system control.
- AC Input Safety: Ensure the incoming AC distribution circuit is rated to handle continuous single-phase current draw (~20–25 A at 230 VAC) safely before powering up the unit.
Frequently Asked Questions
What applications use the Sorensen XFR 40-70?
It is heavily deployed in ATE systems, electroplating lines, semiconductor burn-in testing, magnet control, and general R&D lab environments requiring clean, high-current DC power up to 40V/70A.
Does the unit require spacing between other rack instruments?
No. The XFR series features high-density thermal management that permits direct vertical stacking inside standard 19-inch racks without leaving empty ventilation gaps.
Can the output voltage and current be remotely programmed?
Yes. The power supply supports both standard isolated analog programming (via voltage or resistance sources) as well as optional modular digital interfaces like GPIB and RS-232.
