AC Power Supplies for Electrical Testing

Q: What is the PXe Series AC Power Supply used for?

The PXe Series AC Power Supply is used to provide controlled AC output for product testing, validation, frequency conversion and specialist electrical equipment applications. It is suitable for laboratories, production areas, test facilities and industrial environments where stable voltage and frequency output are required.

Q: Is this the same as a programmable AC power source?

It depends on the selected configuration. The PXe Series can provide fixed or adjustable voltage and frequency outputs, while the AFV-P programmable AC power source page should be used when the main requirement is programmable test control, simulation, and automated AC source operation.

Q: Can the PXe AC Power Supply convert 50Hz to 60Hz?

Yes. The system can be configured for 50Hz to 60Hz or 60Hz to 50Hz operation, allowing equipment to be tested or operated under different regional supply conditions.

Q: Can the system provide 400Hz output?

Yes. A 400 Hz output is available as an option, making the system suitable for specialist applications such as aerospace, avionics, and frequency-specific test requirements.

Q: Is the system available in single phase and three phase versions?

Yes. PXe AC power supplies are available in single phase and three phase configurations, depending on the input supply, output requirement and connected load.

Q: Can output voltage and frequency be adjustable?

Yes. Fixed and adjustable output options are available. Adjustable voltage and frequency are useful in laboratories, product validation, and test environments where equipment must be checked under different supply conditions.

Q: What type of loads can be tested?

The system can support a range of electrical loads, including appliances, electronics, motors, fans, pumps, laboratory equipment and industrial systems, provided the power rating and load characteristics are correctly specified.

Q: What information is needed to specify an AC power supply?

PX should confirm the input phase, input voltage, input frequency, required output phase, output voltage, output frequency, load rating, load type, duty cycle, enclosure requirement and any need for remote control or communications.

Q: Can the unit be integrated into automated test systems?

Yes. Optional communication interfaces, such as RS232C, RS485, and GPIB, can be specified for test system integration, depending on the selected configuration.

PX Electronics AC power supplies provide controlled AC output for product testing, validation, frequency conversion and specialist electrical equipment applications. Designed for laboratories, manufacturers and engineering teams, the PXe Series can be configured with fixed or adjustable voltage and frequency output to support repeatable testing under defined supply conditions.

Available in single phase and three phase configurations, the range supports common 50Hz and 60Hz requirements, with higher frequency outputs, including 400Hz, available where required. Solid-state IGBT PWM conversion, sine-wave output, and transformer isolation make the PXe Series suitable for test benches, production environments, aerospace equipment, marine systems, and industrial electrical loads.

Technical Highlights for AC Power Testing

Configurable AC output
Available with fixed or adjustable voltage and frequency output for testing equipment under controlled supply conditions.

50Hz, 60Hz and 400Hz options
Supports standard 50Hz and 60Hz requirements, with optional higher-frequency outputs, including 400Hz, for specialist applications.

Single phase and three phase systems
Can be specified in single phase or three phase arrangements to suit the site supply, load type and test requirement.

Solid-state IGBT conversion
Uses double-conversion AC to DC to AC architecture with IGBT PWM control for stable and repeatable output performance.

Low-distortion sine wave output
Designed to provide clean AC output with low total harmonic distortion for sensitive equipment and validation work.

Isolation and protection
Integrated transformer isolation and electronic protection support safer operation under abnormal load or supply conditions.

Monitoring and interface options
Digital metering and optional RS232C, RS485 or GPIB interfaces are available for control, monitoring and test integration.

Click here for Datasheet Click here for a sample specification

Typical Applications:

Product performance testing
Electrical compliance and pre-certification testing
50Hz and 60Hz equipment validation
Export product testing
Laboratory and R&D power testing
Production line quality control
Appliance and electronics testing
Aerospace and avionics support equipment
Marine and shore-side electrical equipment
Industrial machinery validation
Motors, fans and pump testing
Specialist test instruments and electrical loads

Configuration:

PXe AC power supplies can be configured around the available input supply, required output voltage, output frequency, phase arrangement and power rating. The range covers compact laboratory units through to larger industrial systems, with single phase output ratings currently listed from 0.5kVA to 200kVA and three phase output versions listed from 1kVA to 2000kVA, depending on configuration.

Output voltage and frequency can be fixed or adjustable. Standard output frequency options include 50Hz, 60Hz, 100Hz, 200Hz and adjustable ranges, with optional 400Hz, 40 to 500Hz, 16.67Hz, 25Hz and higher-frequency configurations available where required.

Each system uses solid-state conversion technology to generate a controlled AC output rather than relying directly on site mains conditions. This makes the range suitable for test environments where engineers need to validate equipment under repeatable voltage and frequency conditions.

Integrated transformer isolation provides electrical separation between the input and output, while supporting cleaner power delivery to connected equipment. Protection functions are available for overcurrent, overload, overvoltage, overtemperature, and short-circuit conditions.

Depending on the application, systems can be supplied with standard or higher IP-rated enclosures, rack-mount formats for smaller units, mobile arrangements, custom terminations and communication interfaces for automated or remote test environments.

Popular Configurations:

We have a variety of models available. Please see below for some popular configurations. Please note: customers may request alternative voltages and frequencies as required; the examples below are for illustration only.

Model	Capacity	Current Rating	Input	Output	Dimensions	Weight
PXe-110005 1ph In/1ph Out	5kVA	43.4A @ 115V	230V (L-L) ±10% \| 50Hz \| Single Phase	115V (L-N)/ 200V (L-L) \| 60Hz \| Single Phase	430x550x430mm	55kg
PXe-130010 1ph In/3ph Out	10kVA	28.9A per phase @ 115V	230V (L-L) ±10% \| 50Hz \| Single Phase	115V (L-N)/ 200V (L-L) \| 60Hz \| 3 phase	430x550x630mm	107kg
PXe-310015 3ph In/1ph Out	15kVA	65.3A @ 230V	400V (L-L) ±10% \| 50Hz \| 3 phase	230V (L-L) \| 60Hz \| Single Phase	550x700x800mm	220kg
PXe-330020 3ph In/3ph Out	20kVA	57.9A per phase @ 115V	400V (L-L) ±10% \| 50Hz \| 3 phase	115V (L-N)/ 200V (L-L) \| 60Hz \| 3 phase	550x900x1000mm	240kg
PXe-330050 3ph In/3ph Out	50kVA	86.9A per phase @ 115V	400V (L-L) ±10% \| 50Hz \| 3 phase	115V (L-N)/ 200V (L-L) \| 60Hz \| 3 phase	550x900x1000mm	290kg
PXe-330100 3ph In/3ph Out	100kVA	130.4A per phase @ 115V	480V (L-L) ±10% \| 60Hz \| 3 phase	115V (L-N)/ 200V (L-L) \| 50Hz \| 3 phase	580x1100x1500mm	440kg

Technical Specification

Capacity
Single Phase Output	kVA Ratings: 0.5kVA, 1kVA, 3kVA, 5kVA, 10kVA, 15kVA, 20kVA, 30kVA, 50kVA, 60kVA, 75kVA, 100kVA, 150kVA, 200kVA
Three Phase Output Versions	kVA Ratings: 1kVA, 3kVA, 6kVA, 9kVA, 15kVA, 20kVA, 30kVA, 45kVA, 60kVA, 100kVA, 150kVA, 200kVA, 300kVA, 400kVA, 500kVA (Select One kVA)
Input
Single Phase (Select One Individual Voltage)	110Vac ±10%, 115Vac ±10%, 120Vac ±10%, 127Vac ±10%, 220Vac ±10%, 230Vac ±10%
Three Phase (Select One Individual Voltage)	115-127 (L-N) / 200-220V (L-L) ±10%, 220-240 (L-N) / 380-415V (L-L) ±10%, 3 Phase 4 Wire, 440V (L-L) ±10%, 480V (L-L) ±5%, 3 Phase 3 Wire
Frequency	50Hz/60Hz ±5%, 400Hz (Optional)
Power Factor	≥ 0.8 (standard type) ≥ 0.9 (optional type, 12 pulse)
Output
Single Phase (Select One Individual Voltage)	Fixed: 110V, 115V, 120V, 127V, 220V, 230V, 240V Adjustable: 0~150Vac / 0~300Vac
Three Phase (Select One Individual Voltage)	Fixed: 115/200V, 120/208V, 127/220V, 220/380V, 230/400V, 240/415V, 254/440V, 277/480V (L-N/L-L), 3 Phase 4 Wire Adjustable: 0~260V (L-N) / 0~520V (L-L), 3 Phase 4 Wire
Frequency	Fixed: 50Hz, 60Hz, 100Hz, 200Hz, 45–200Hz (adjustable) Optional: 400Hz / 40–500Hz (adjustable), 16.67Hz, 25Hz, 50Hz, 60Hz, 400–1000Hz
Voltage Accuracy	≤ ±1% FS (Full Scale)
Frequency Accuracy	≤ ±0.1% FS (Full Scale)
Total Harmonic Distortion	THD ≤ 3% @ linear load, pure sine wave output
Crest Factor (Pk/rms)	3:1
Overload	100% for continuous, 101–200% shut down in 200mS
Interface	None for standard units, RS232C/RS485/GPIB (Optional)
Protection	Over-current, over-load, over-voltage, over-temp, short circuit, alarm and indicators
Enclosure IP Rating	IP22 (Standard), IP32, IP54 (Optional). Special enclosure options available
LED/LCD Display	Digital frequency meter, Digital voltage meter, Digital current meter, Digital 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
CE	CE Marked
Reliability and Efficiency
Mean Time Between Failure (MTBF)	50,000Hrs
Mean Time To Restore (MTTR)	< 30 min
Overall Efficiency	≥ 85%
Standards
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