Features
The Sorensen XTR Series is the new standard for powerful, programmable DC power systems. Designed for test, production, laboratory, OEM and quality assurance applications, the XTR provides a wealth of features to ensure accuracy and greater efficiency. It puts clean, reliable power at your disposal and delivers stable, variable output voltage and current for a broad range of development, test and system requirements.
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Key Features
- Highest Power Density
High frequency, soft switching technology in the XTR Series provides up to 850 Watts in a 1U half-rack package. This represents the highest power density available from any manufacturer. With 12 models, there is a configuration available to meet every application.
- Comprehensive Digital and Analog Interface Options
The XTR comes standard with USB 2.0, RS-232, RS-485, isolated and non-isolated analog interfaces to provide a comprehensive set of options to connect to a PC or other network device. This design provides the convenience
of being able to accommodate a wide range of installation configurations. Ethernet and GPIB interfaces are available as options.
- Scalable, Multi-Unit Design
XTR power supplies can be connected in parallel or series to produce greater current or voltage output for your applications. This scalability allows you to build rack-mounted systems with the XTR that exactly meet your existing requirements, while allowing for future expansion.
- Multi-Channel Support
Up to 30 XTRs can be connected easily via an RS-485 bus to provide the ultimate flexibility in remote programming. This eliminates the cost and complexity of requiring GPIB cards in each unit Once connected, multiple power supplies can be controlled via a single LAN, USB 2.0, GPIB, RS-232 or RS-485 interface. This provides an efficient option to centrally manage each XTR needed for your applications.
- Straightforward Front Panel Controls
The XTR is equipped with a unique push-button encoder and function selector dial to provide a simple, uncluttered front panel. Both voltage and current can be set quickly and easily using these two controls. Front panel access can be locked out to ensure secure remote operation. This streamlined front panel layout results in fast, intuitive set-up and operation of the XTR.
- High Reliability
To guarantee long-term trouble-free performance, the XTR was designed with reliability in mind. Soft-switching technology ensures higher mean time between failure (MTBF) by eliminating high voltage transients found in conventional hard-switching power supplies which can cause premature failure of power components.
Sorensen engineers also rigorously tested the XTR during the design phase using Highly Accelerated Life Testing (HALT). This rigorous test procedure combines powerful thermal and vibration technologies to stress a product beyond its rated specifications. HALT testing allows our engineers to uncover and correct design issues early in the development cycle. This care in design and comprehensive testing ensures the XTR exceeds the reliability and quality standards of both Sorensen and our customers.
- Five-Year Warranty
The XTR is backed by a comprehensive five-year warranty, the longest in the market. Our superior design and testing techniques result in highly reliable products that will provide you with years of trouble-free performance. |
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| Output Voltage1 |
33 V |
| Output Current2 |
25 A |
| Output Power3 |
835 W | |
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Voltage (0.005% of rated output
voltage +2 mV)4 |
3.7 mV |
Current (0.01% of rated output
current +2 mA)5 |
4.5 mA | |
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Voltage (0.005% of rated output
voltage + 2 mV)6 |
3.7 mV |
Current (0.02% of rated output
current +5 mA)7 |
10 mA | |
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| Output Noise (rms, 300 kHz) | |
| Voltage |
8 mV |
| Current8 |
60 mA | | |
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Output Ripple (p-p, 20 MHz) | |
| Voltage |
50 mV |
| Maximum Recommended Remote Sense Line Drop Compensation per Line9 |
1 V |
| Up-prog. Response Time, 0~Vmax10 |
60 ms |
| Down-prog. Response Time: Full Load |
50 ms |
| Down-prog. Response Time: No Load |
300 ms |
| Over-Voltage Trip Point |
0.5–7.5 V |
| Efficiency11 |
75/77% | |
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1. |
Maximum output voltage is guaranteed to be 0.1% of the rated voltage at zero
output setting, using the front panel or digital remote programming modes. |
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| 2. |
Maximum output current is guaranteed to be 0.2% of the rated current at zero output setting, using the front panel or digital remote programming modes, and when measured with rated load resistance. |
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| 3. |
Total output power is also based on AUX1 Output Voltage (5 V) and AUX1 Output Current (0.5 A) and AUX2 Output Voltage (15 V) and AUX2 Output Current (0.5 A). |
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| 4. |
From 85–132 Vac or 170–265 Vac, constant load. |
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| 5. |
From 85–132 Vac or 170–265 Vac, constant load. |
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| 6. |
From no load to full load, constant input voltage. |
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| 7. |
For load voltage change, equal to the unit voltage rating, constant input voltage. |
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| 8. |
For 6 V models the current ripple is measured at 2–6 V output voltage and full output current. For all other models, the current ripple is measured at 10–100% output voltage and full output current. |
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| 9. |
When using remote sense, the total of the load voltage and the load line drops must not exceed the rated output of the power supply. For example, for an XTR 6-110 in an application with 1 V of
load line loss (0.5 V/Line), the maximum available load voltage would be 6–1= 5 V. Note: The unit may operate at higher output voltages than this, but there is no guarantee that the power supply
will meet performance specifications. Ultimately, the upper limit of the output voltage will be determined by internal circuitry of the power supply (non-adjustable.) |
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| 10. |
With rated, resistive load. |
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| 11. |
At 100/200 Vac input voltage and maximum output power.
Applies to all footnotes: Programming and Readback: RS-232, RS-485, USB built in. GPIB, Ethernet optional. |
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| Specifications are guaranteed from 1% to 100% of the rated output voltage, current, and power. |
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| Environmental Specifications (Indoor use) | |
| Operating Temperature Range |
32°F to 122°F, 100% load (0°C to 50°C) |
| Storage Temperature Range |
-4°F to 158°F (–20° C to 70°C) |
| Operating Humidity Range |
30–90% RH (no condensation) |
| Storage Humidity Range |
10–95% RH (no condensation) |
| Operating Altitude |
Up to 6,500 feet (2,000 m) |
| Installation Category |
II (IEC 1010-1) |
| Pollution Degree |
2 (IEC 1010-1) | |
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| Safety |
CSA 22.2 No. 61010-1 and UL61010-1. Marked with c(UL) us, CE EN61010-1 |
| EMC |
Complies with EN55022, Class B, FCC Part 15B for conducted emissions,
Complies with EN55022, Class A, FCC Part 15A for radiated emissions,
Complies with EN61000-4 series of standards for immunity |
| Warranty |
Five Years | |
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| Programming Mode |
APG |
ISOL |
Digital | |
| Voltage & Current Output Voltage Programming |
0-100% Voltage control range is 0.0 to 2.0 - 10.0V in 0.1V increments |
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| Voltage & Current Output Resistive Programming |
0-100% Resistive control range is 0.0 to 2.0 - 10.0V in 0.1V increments |
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| Output Voltage and Current Monitor |
0-100% Output Voltage Monitor range is 0.0 to 2.0 - 10.0V in 0.1V increments |
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| Voltage Programming Accuracy1 |
± 0.5% of rated output voltage, max (0 to 4.0V / 4K Ohm range)
± 0.5% of rated output voltage, typical in other ranges |
± 0.1% of rated output voltage |
| Current Programming Accuracy1 |
± 0.5% of rated output current, max (0 to 4.0V / 4K Ohm range)
± 0.5% of rated output current, typical in other ranges |
± 0.2% of rated output current6 |
| Voltage Feedback Accuracy |
± 1% of rated output voltage |
± 0.1% of rated output voltage |
| Current Feedback Accuracy |
± 1% of rated output current |
± 0.2% of rated output current |
| Isolation (Prog and Readback Lines) |
With respect to chassis potential: 500 V |
With respect to:
chassis potential: 500 V
negative or positive main output 1500 V
negative or positive auxiliary output 300 V |
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| Parallel Operation |
Up to 4 units in master slave mode |
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| Series Operation |
Up to 2 units (with external diodes) |
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| Constant Voltage (CV) Constant Current (CC) Indicator |
CV: TTL High (4-5 V)
CC TTL Low (0-0.6 V) |
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| Shutdown Control2 |
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Logic low 0.0 - 1.4 V
Logic high 2.0 - 15 V
Dry contact compatible |
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| AUX On/Off Control |
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TTL level or dry contact compatible |
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| Power Supply Status Signal |
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TTL high: OK (4-5 V)
TTL low: fail (0-0.6 V) |
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| Interlock Enable/Disable |
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Dry contact. Open/Short: On or Off programmable |
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| 1. |
Typical APG or isolated APG accuracy can be improved to max accuracy by user calibration at the specific range selected |
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| 2. |
The shutdown input has user selectable negative logic operation via front panel or remote digital input/output |
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| AC Line Input Specifications | |
| Rated AC Input Voltage/Frequency |
100–240 Vac, 47–63 Hz |
| Operational AC Input Voltage/Frequency |
85–265 Vac continuous, 47–63 Hz, single phase |
| Input Current (at 100/200 Vac) |
11.5/6 A (850 W) |
| Inrush Current (100/200 Vac) |
Less than: 25 A (850 W) |
| Power Factor Correction |
0.99@100/200 Vac, rated output power | |
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| Output Performance Specifications | |
| Temperature Coefficient |
100 PPM/° C from rated output voltage, after a 30-minute warm-up |
| Drift (8 hours) |
0.05% of rated output voltage & current over an 8 hour interval with constant line, load & temperature, after a 30-minute warm-up |
| Hold-up Time |
Typical 20 ms at any rated input line. |
| Transient Response Time2 |
Less than 1 ms for 6 V to 60 V models. Less than 2 ms for 80 V to 600 V models |
| Meter Accuracy |
0.5% of actual output voltage or current ± 1 count |
| Aux output1 |
+5 V: +0.4 V, – 0.5 V at 0.4 A
+15 V: +1.2 V, – 1.4 V at 0.4 A |
| Isolation |
AC Input to Output
AC Input to Chassis
Output to Chassis3 |
1350 Vac
1350 Vac
500 Vac | |
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| 1. |
Current: 0.51 A minimum guaranteed, 0.72 A typically available. Overcurrent protection (each output) is automatic, non-latching. When OCP is tripped the aux voltage folds back and will recover to nominal condition when the over current condition is removed (typ. <0.2A).
To protect external circuits attached to the aux outputs it is recommended that customers use an appropriately rated fuse in series with the aux outputs set point 10-100% |
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| 2. |
Time for the output voltage to recover within 0.5% at its rated output for a load change 10-90% of rated output current. Output set point 10-100% |
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| 3. |
For floating chassis ground applications, please contact application engineering for system design assistance. |
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| Mechanical Specifications | |
| XTR 850 Watt (W×H×D) |
8.4 × 1.7 × 19.0 inch (214 × 43.6 × 483 mm) |
| Weight 11 lb (5kg) |
| Cooling Forced air cooling by internal fans | | | | |
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