PXe-A Series Variable AC Power Supplies
PXe-130000-A
PX Electronics PXe-A Series Variable AC Power Supplies provide controlled, adjustable AC voltage and frequency for workshop, bench-top and laboratory testing. They allow engineers to operate equipment under defined supply conditions rather than relying directly on fixed site mains power.
Available in single-phase and three-phase configurations, PXe-A Series AC Power Supplies are used for product development, electrical validation, production testing and engineering work where voltage or frequency needs to be varied deliberately. Smaller models are suited to laboratory benches and workshop test areas, while higher-power systems can support production equipment and larger electrical loads.
Single-phase systems provide adjustable output ranges of 0 to 150V AC or 0 to 300V AC. Three-phase systems are available with adjustable output up to 0 to 260V line-to-neutral and 0 to 520V line-to-line. Standard adjustable frequency extends from 45 to 200Hz, with an optional 40 to 500Hz range for wider-frequency testing.
Technical Highlights for Workshop, Bench-Top & Laboratory AC Testing
Workshop, Bench-Top & Laboratory Use
Compact models provide a practical controlled AC source for engineering benches, workshops and R&D laboratories, with larger systems available for production testing and higher-power electrical equipment.
Adjustable Voltage & Frequency
Set the AC output voltage and frequency to reproduce nominal operating conditions, upper and lower voltage limits, regional mains requirements or defined engineering test points.
Single-Phase, Three-Phase & Non-Linear Load Support
Available with different input and output phase arrangements for bench equipment, laboratory systems and larger electrical loads. A 3:1 current crest factor supports suitable rectifier-fed and other non-linear loads within the RMS current and kVA limits of the selected supply.
Controlled Sine-Wave Output & Integrated Measurement
IGBT PWM regulation provides a stable AC output with THD specified at 3% or lower with a linear load. Front-panel metering displays voltage, current, frequency, power and power factor during workshop and laboratory testing.
Remote Integration, Isolation & Protection
Optional RS232C, RS485 and GPIB interfaces support remote and automated test arrangements, while transformer isolation and electronic protection cover overcurrent, overload, overvoltage, overtemperature and short-circuit conditions.
Product Information
Configurable AC Power for Workshop and Laboratory Testing
PXe-A Series AC Power Supplies can be configured around the available input supply, required output phase, adjustable voltage range, operating frequency and connected test load.
Smaller units are suited to bench-top, workshop and laboratory installations, including 19-inch rack integration where required. Larger three-phase and higher-capacity systems can be configured for production areas and test facilities where the equipment under test requires substantially more power.
Unlike a Static Frequency Converter selected primarily to provide a defined operating supply, the PXe-A Series is intended for applications where the engineer needs to change, set or investigate the applied AC voltage and frequency.
Available configurations:
| Parameter | Available Configuration |
|---|---|
| Output Phase | Single-phase or three-phase |
| Single-Phase Voltage | Fixed output or adjustable 0 to 150V AC / 0 to 300V AC |
| Three-Phase Voltage | Fixed output or adjustable up to 0 to 260V L-N / 0 to 520V L-L |
| Standard Frequency | Fixed 50Hz, 60Hz, 100Hz or 200Hz |
| Variable Frequency | 45 to 200Hz |
| Extended Frequency | Optional 40 to 500Hz |
| Output Connection | Three-phase, three-wire or four-wire |
| Control | Manual front-panel adjustment or optional remote interface |
| Construction | Bench, 19-inch rack-mounted, mobile or floor-standing |
Input and Output Arrangements
Input and output phases do not have to be the same. Available configurations include single-phase input to single-phase output, single-phase input to three-phase output, three-phase input to single-phase output, and three-phase input to three-phase output.
Using a three-phase input for a higher-power single-phase load can reduce the input current carried by each phase and may be preferable where the available site supply allows it.
Load Capability
The supply can support resistive, inductive, capacitive and rectifier-fed loads when correctly sized. A 3:1 current crest factor supports many non-linear electronic loads, subject to the RMS current, peak current and total kVA limits of the selected unit.
Motors, transformers, compressors and equipment with large input capacitors may draw considerably more current during start-up than during normal operation. These applications should be selected using the starting current and its duration, rather than the running rating alone.
19-Inch Rack-Mount Construction
Available on selected smaller models for integration into laboratory benches, workshop test racks, automated test systems and production test equipment.
Order Codes:
A product order code can be derived from the main ordering information using the structure below:
Generic order code is based on this format: PXe-130000-A, and all PXE order codes start with the six digits, like 130030 in this case, indicating 1ph-input 3ph-output and 30kVA
For example a 1 phase in 50Hz, 3 phase out 47-63Hz, 7.5kVA, Variable, Manual Control = PXE-130007.5-A
PXE-130007.5-A-[INPUT]-[OUTPUT]-[RATING]-[ENCLOSURE]-[CONTROL]
PXE-130007.5-A-[1P230V50N]-[3P0-300V/0-520VN47-63N]-[7.5kVA]-[IP22]-[MC]
This would represent:
(PXE-130030-A) – PX Electronics SFC Unit 30kVA
(1P230V50N) – 1 phase, 230VL-L+Neutral, 50Hz input
(3P0-300V/0520V47-63N) – 3 phase, Low 0-300L-L/High 0-520L-L+Neutral, 47-63Hz output
(7.5KVA) – 7.5kVA rating
(IP22) – IP22 enclosure
(MC) – Manual Control
For a manually controlled standard enclosure version, the part number may look like this:
PXe-330050-A-3P415V50N-3P0-300V/0-520VN47-63-50KVA-IP22-MC
| Model | Input | Output | Capacity | Enclosure | Interface Options |
|---|---|---|---|---|---|
|
PXe-330050-A PX Electronics – AC Power Supply |
3P2415V50 3P = Three Phase |
3P0-300V/0-520V47-63 3P = Three Phase |
50KVA
50kVA capacity |
IP22
Standard IP22 enclosure |
MC
Manual Control Interface |
Available Options:
IP54-rated enclosure
Rugged enclosure option for outdoor, industrial, marine or aviation-related environments where additional protection is required against humidity, condensation, salt spray, water ingress and dust.
Conformal coating
Additional coating of internal PCBs and selected electronic components to improve protection in harsh, humid or corrosive environments.
19-inch rack mount construction
Available on smaller models where the AC power supply needs to be integrated into an existing rack, cabinet, laboratory bench system or production test area.
Remote watchdog monitoring
Typically offered on models above 50kVA. The watchdog system can provide real-time fault notification via SMS, data history logging, remote operation, and automatic restart functionality, subject to application and site requirements.
Cables and terminations
Input and output cable assemblies, connectors, and termination arrangements can be supplied to suit installation, load connection, and site operating requirements.
Mobile base and handling options
Wheeled bases, rubber castors, and swivel tow bars are available when the AC power supply needs to be moved between test areas, production lines, service bays, or operating locations. This option is suitable for facilities where flexible positioning and practical handling are important.
PXe-130000-A Series Technical Specification
| Capacity | |
| Single Phase Output (Other options available on request) |
kVA Ratings: 0.5kVA, 1kVA, 3kVA, 5kVA, 10kVA, 15kVA, 20kVA, 30kVA, 50kVA, 60kVA, 75kVA, 100kVA, 150kVA, 200kVA |
| Three Phase Output (Other options available on request) |
kVA Ratings: 1kVA, 3kVA, 6kVA, 9kVA, 15kVA, 20kVA, 30kVA, 45kVA, 60kVA, 100kVA, 150kVA, 200kVA, 300kVA, 400kVA, 500kVA |
| Input | |
| Single Phase (Select One Individual Voltage) |
110V, 115V, 120V 127V, 220V, 230V, 400V |
| Three Phase (Select One Individual Voltage) |
115V/200V (L-N/L-L), 120V/208V, 127V/220V, 220V/380V, 230V/400V, 240V/415V, 254V/440V, 277V/480V, 400V/690V, 3 Phase 3 Wire or 3 Phase 4 Wire |
| Frequency | 50Hz/60Hz ±5%, 400Hz (Optional) |
| Power Factor | ≥ 0.8 (standard type) ≥ 0.9 (optional type, 12 or 18 pulse) |
| Output | |
| Single Phase (Select One Individual Voltage) |
Fixed: 110V, 115V, 120V, 127V, 220V, 230V, 240V, 400V, 28Vdc Adjustable: 0~300V |
| Three Phase (Select Voltages required) |
Fixed: 115V/200V (L-N/L-L), 120/208V, 127/220V, 220/380V, 230/400V, 240/415V, 254/440V, 277/480V, 400/690V, 3 Phase 3 Wire or 3 Phase 4 Wire Adjustable: Low range 0~260V/High range 0~520V, 3 Phase 3 Wire or 3 Phase 4 Wire |
| Frequency | Fixed: 50Hz, 60Hz, 100Hz, 200Hz, 45-200Hz (adjustable) Optional: 400Hz, 40Hz~500Hz (adjustable), 16.67Hz, 25Hz, 50Hz, 60Hz, 400-1000Hz |
| Voltage Accuracy | ≤ ±1% FS (Full Scale) |
| Frequency Accuracy | ≤ ±0.1% FS |
| Total Harmonic Distortion | THD ≤ 3% @ linear load, pure sine wave output |
| Load Crest Factor Capability | 3:1 maximum |
| Overload Capacity | 100% continuous <110% – 15 minutes, <125- 10 minutes, <150%- 1 minute, <200%- 5 seconds >200% output cut off (other variations available upon request) |
| Interface | RS232C/RS485/GPIB (Optional) |
| Protection | Over-current, overload, over-voltage, over-temp, short circuit, alarm and indicators |
| Enclosure IP Rating | IP22 (Standard), IP32, IP54 (Optional). Special enclosure options available |
| LCD Display | Digital frequency meter, Voltage meter, Current meter, Power/PF meter |
| Connectors | Hard-wire terminals, EN60309, MIL-STD, or client choice |
| Operating conditions | |
| Temperature | Operation: -10℃~55℃ Ambient: -10℃~45℃ |
| Noise | ≤ 65dB at 1 meter EN 55022, IEC1000-4 |
| Humidity | 10~90% non-condensing |
| Cooling | Variable speed fan, filtered air intake in base, exhaust at rear |
| Altitude | ≤ 1800m |
| Castors or Feet | 0.5-3kVA have rubber feet and lifting handles, 4kVA+ have castors with front brakes. A/Vs or feet optional |
| Reliability and Efficiency | |
| Mean Time Between Failure (MTBF) | 50,000Hrs |
| Mean Time To Restore (MTTR) | < 30 min |
| Overall Efficiency | ≥ 85% |
| Standards | |
| CE, GB50054-95, GB 50150-1991, GB 50150-2006, GB 50171-1992, GB/T 16935.5-2008, GB/T16935.4-2011 | |
| EN IEC61000-3-2, EN 61000-3-3, EN55032, EN55035, MIL-STD-1399, MIL-STD 461, MIL-STD704, STANAG 1008 | |
| For more information and support, please feel free to contact us | |
Yes. Optional RS232C, RS485 and GPIB interfaces are available for selected models, allowing integration with automated test equipment or remote control systems.
Yes. Output voltage can be adjusted within the range of the selected model.
This allows engineers to test equipment at nominal voltage, reduced voltage, increased voltage or other defined operating points.
Yes. Smaller PXe-A Series models can be used as controlled AC sources for engineering benches, workshops and laboratories.
Selected models can also be supplied in 19-inch rack-mounted construction for integration into a wider test system.
Yes, subject to correct sizing. The PXe-A Series supports a current crest factor of 3:1 for suitable non-linear loads.
Equipment with high inrush current or significant peak-current demand should be reviewed using its actual starting and operating characteristics rather than its continuous power rating alone.
Yes. The adjustable frequency output allows equipment to be evaluated at both 50Hz and 60Hz, making the PXe-A Series useful for products intended for different international power systems.
Yes. Adjustable voltage and frequency make the PXe-A Series suitable for R&D laboratories, product development, design validation and electrical equipment testing.
Single-phase and three-phase systems are available depending on the equipment and required test capacity.
A variable AC power supply provides a controlled AC output with adjustable voltage, frequency or both.
It allows engineers to reproduce defined supply conditions when testing equipment on a workshop bench, in a laboratory or within a production test system.
AC power supplies are commonly used for workshop testing, bench-top electrical testing, laboratory development, product validation and production testing.
They allow engineers to deliberately vary voltage and frequency to check equipment under nominal conditions, at upper and lower voltage limits, at 50Hz or 60Hz operation, and at other application-specific test points.
A Variable AC Power Supply is primarily a test power source. It is normally used in workshop, bench-top, laboratory and production test environments where engineers need to vary voltage, frequency or both and observe how equipment responds.
A Static Frequency Converter is normally selected to provide a stable operational supply at the voltage and frequency required by connected equipment, such as converting 50Hz mains power to 60Hz for industrial machinery or producing 400Hz power for aircraft equipment.
Both use power conversion technology, but they are designed around different applications.
The PXe-A Series provides configurable fixed or adjustable AC output for general electrical testing and equipment operation.
The AFV-P range is better suited where the main requirements are advanced programmable control, automated test routines, or more detailed AC supply simulation. The exact selection depends on the test sequence and the required control functions.
Adjustable voltage and frequency configurations are available. The exact operating range and any interactions among output voltage, output current, and available kVA should be confirmed for the selected model.
Yes. A variable-frequency configuration can be used to test equipment intended for both 50Hz and 60Hz markets. Wider frequency ranges are also available for specialist equipment.
Yes. The range includes single-phase and three-phase output configurations. Input and output phases do not necessarily need to be the same, allowing arrangements such as three-phase input to higher-power single-phase output.
The AC Power Supply can support resistive, inductive, capacitive and non-linear electronic loads when correctly sized. The normal running current, peak current, power factor, crest factor and inrush characteristics should be considered.
Not necessarily. Available current and output power may depend on the selected voltage range and internal configuration. The required voltage, current and continuous kVA should therefore be provided together.
