PXe-C Series Three Phase Static Frequency Converters | SFC
PXe-330000-C Series
PX Electronics PXe-330000-C Series three-phase static frequency converters provide conversion from one frequency to another, also changing the voltage as required. The PXe-330000-C Series SFC offer stable, reliable 50Hz to 60Hz and 60Hz to 50Hz power conversion for industrial equipment, shipping-marine systems, export testing and manufacturing environments. Designed for continuous-duty operation, the PXe-330000-C series delivers stable three-phase output and protection for all types of machinery from rotating motors to specialist electrical loads.
Using solid-state IGBT PWM conversion technology, each system converts incoming AC power to DC, then generates a controlled AC output at the required power frequency. This makes the PXe-330000-C range suitable for equipment operating across different global power standards, including imported machinery, export production testing and industrial sites requiring dependable frequency conversion.
Technical Highlights for Three Phase Frequency Conversion
50Hz and 60Hz Frequency Conversion
Converts between 50Hz and 60Hz three-phase supplies for machinery, production equipment and specialist electrical systems, with output frequency maintained independently of connected load.
Soft-Start Capability
Controlled soft-start operation progressively applies the output supply, helping to reduce load inrush current, limit mechanical stress and provide a more controlled start for motors, compressors and other demanding loads.
Line voltage drop compensation
Compensates for voltage drop across the aircraft output cable, helping maintain the required voltage at the aircraft connection point under load.
Industrial Load Support
Suitable for resistive, inductive, and unbalanced loads, including motors, pumps, compressors, HVAC equipment, and production machinery.
Precise Output Control
Provides precise control of output voltage, current and frequency, maintaining a stable three-phase supply across varying load conditions.
IGBT PWM Conversion with Harmonic Mitigation
Solid-state IGBT PWM technology provides stable voltage and frequency conversion. Optional 12-pulse and 18-pulse rectifier arrangements improve the input current waveshape, bringing it closer to a sine wave while significantly reducing dominant lower-order harmonics and improving supply-side power quality.
Transformer Isolation, Continuous Duty & Monitoring
Integrated transformer isolation provides electrical separation between the incoming supply and connected equipment. The PXe-C Series is designed for continuous operation and can be supplied with front-panel control, HMI, remote interfaces, communications and optional independent watchdog monitoring.
Product Information
PXe-330000-C configurations:
PXe three phase static frequency converters can be configured to suit a wide range of input supplies, output frequencies, installation formats and control requirements. Systems are available for standard 50Hz and 60Hz conversion duties, with 400Hz output options for aircraft or specialist equipment power requirements.
The range covers output ratings from 1kVA to 500kVA, allowing systems to be specified for small test loads, production equipment, larger machinery, and higher-power operational loads. Input and output voltages can be matched to the site supply and connected equipment, helping customers operate machinery or test products under the correct electrical conditions.
Each converter is built around solid-state IGBT PWM conversion with sine-wave AC output and integrated transformer isolation. This supports electrical separation between input and output, while helping reduce noise and improve compatibility with connected equipment.
Operators can monitor key values from the front panel, including voltage, current, frequency and system status. Protection functions are built into the system to respond to abnormal operating conditions such as overload, short circuit, over-temperature and phase loss.
Depending on the project, units can be supplied as rack-mounted, floor-standing or mobile enclosure systems. Remote monitoring and communication interfaces, including RS-232, RS-485 and Ethernet, are available where integration with wider control or test systems is required.
Popular Configurations:
We have a variety of PXe-330000-C models available. Please see below for some popular configurations. 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-330003-C
3ph In/3ph Out |
3kVA | 12A per phase @ 83V | 380V (L-L) ±10% | 50Hz | 3 Phase | 0-300V Variable | 60Hz | 3 Phase | 430x550x430mm | 62kg |
| PXe-310006-C
3ph In/1ph Out |
6kVA | 52A per phase @ 115V | 415V (L-L) ±10% | 50Hz | 3 Phase | 115V | 60Hz | 1 Phase | 430x650x600mm | 92kg |
| PXe-330009-C
3ph In/3ph Out |
9kVA | 23A per phase @ 130V | 11.5A per phase @ 260V | 400V (L-L) ±10% | 50Hz | 3 Phase | 0-260V (L-L)/0-520V (L-L) | 50Hz/60Hz | 3 Phase | 430x650x600mm | 121kg |
| PXe-330015-C
3ph In/3ph Out |
15kVA | 21.7A per phase @ 230V | 400V (L-L) ±10% | 50Hz | 3 Phase | 230V (L-N)/ 400V (L-L) | 60Hz | 3 Phase | 550x700x800mm | 220kg |
| PXe-330030-C
3ph In/3ph Out |
30kVA | 86.9A per phase @ 115V | 415V (L-L) ±15% | 50Hz | 3 Phase | 115V (L-N)/ 200V (L-L) | 60Hz | 3 Phase | 550x900x1000mm | 290kg |
| PXe-330045-C
3ph In/3ph Out |
45kVA | 130.4A per phase @ 115V | 400V (L-L) ±10% | 50Hz | 3 Phase | 115V (L-N)/ 200V (L-L) | 60Hz | 3 Phase | 580x1100x1500mm | 440kg |
High-Leg Delta Output Configurations
PXe-C Series Static Frequency Converters can be configured with a 240/120V three-phase, four-wire High-Leg Delta output where this distribution arrangement is required by the connected equipment or site electrical system.
In a typical High-Leg Delta configuration:
- 240V is available phase-to-phase across all three phases
- 120V is available from two phases to neutral
- The high leg measures approximately 208V to neutral
- The high leg must not be used to supply 120V line-to-neutral loads
The required phase designation, neutral arrangement, transformer winding configuration and load distribution are defined as part of the SFC specification.
High-Leg Delta systems are particularly relevant to North American industrial installations where machinery requires a combination of three-phase 240V power and selected 120V auxiliary loads from the same distribution system.
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-330000-C and all PXE order codes start with the six digits like 330200 in this case indicating 3ph-input 3ph-output and 200kVA
For example a 3 phase in 50Hz, 3 phase out 60Hz, 200kVA, Commercial, Manual Control = PXE-330200-C
PXE-330200-C-[INPUT]-[OUTPUT]-[RATING]-[ENCLOSURE]-[CONTROL]
PXE-330200-C-[3P415V50N]-[3P208V60N]-[200kVA]-[IP22]-[MC]
This would represent:
(PXE-330200-C) – PX Electronics SFC Unit 200kVA
(3P415V50N) – 3 phase, 415VL-L+Neutral, 50Hz input
(3P208V60N) – 3 phase, 208VL-L+Neutral, 60Hz output
(200KVA) – 200kVA rating
(IP22) – IP22 enclosure
(MC) – Manual Control
For a manually controlled standard enclosure version, the part number may look like this:
PXe-330200-C-3P415V50N-3P208V60N-200KVA-IP22-MC
| Model | Input | Output | Capacity | Enclosure | Interface Options |
|---|---|---|---|---|---|
|
PXe-330200-C PX Electronics – Static Frequency Converter |
3P415V50N 3P = 3 Phase 415V = Input Voltage
|
3P208V60 3P = 1ph |
200KVA
200kVA capacity |
IP22
Standard IP22 enclosure |
MC
Manual Control Interface |
High-Leg Delta Option
A 240/120V 3-phase 4-wire High-Leg Delta output can be specified where required.
When requesting this configuration, please provide:
- Required phase-to-phase voltage
- Required 120V line-to-neutral load
- Total three-phase load
- Expected load distribution
- Preferred high-leg phase designation, where specified by the installation
- Earthing and neutral requirements
- Applicable site electrical standards
The line-to-neutral load should be declared during system selection so that the transformer winding and neutral arrangement can be correctly sized for the application.
Additional 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.
External Metering
Allows for external kWHr energy metering, useful as some energy meters may be customer preferred, also enabling measurement over individual circuit branches connected to the main SFC output along with customer specific communications
PXe-330000-C 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, 240V, 400V (±10%, other options available) |
| Three Phase (Select One Individual Voltage) |
(L-N/L-L) 115V/200V, 120V/208V, 127V/220V, 220V/380V, 230V/400V, 240V/415V, 254V/440V, 277V/480V, 400V/690V (±10% std, other options available) 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 Adjustable: 0~300V |
| Three Phase (Select Voltages required) |
Fixed: (L-N/L-L) 115V/200V, 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 Optional North American configuration: 240/120V, 3 Phase 4 Wire High-Leg Delta |
| 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 |
| Frequency Accuracy | ≤ ±0.1% FS |
| Total Harmonic Distortion | THD ≤ 3% @ linear load, pure sine wave output |
| Load Current Crest Factor Capability | 3:1 |
| 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 std, RS485, GPIB, Ethernet (Optional) |
| Protection | Over-current, over-voltage, over-power, over-temp, short circuit, alarm and indicators |
| Enclosure IP Rating | IP22 (Standard), IP32, IP54 (Optional). Special enclosure options available |
| LCD Display | 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. The PXe-C Series can be configured for a 240/120V three-phase, four-wire High-Leg Delta output where required by the connected equipment or installation.
This arrangement provides 240V phase-to-phase, 120V from two phases to neutral, and approximately 208V from the high leg to neutral. The high leg is not used for 120V line-to-neutral loads.
The required transformer winding, neutral arrangement, phase designation and expected line-to-neutral loading should be confirmed when the SFC is specified.
A three phase Static Frequency Converter is used to convert electrical power from one voltage and frequency to another, typically from 230V 50Hz to 115V 60Hz, 60Hz to 50Hz and to 400Hz. This allows industrial machinery, motors, pumps, compressors and other three phase equipment to be powered from the appropriate supply voltage and frequency.
Yes. The PX Electronics three phase Static Frequency Converters can be configured for 50Hz to 60Hz, 60Hz to 50Hz or 50/60Hz to 400Hz.
Yes, a three phase Static Frequency Converter (SFC) can convert to single phase AC supply.
Yes. The SFC system can be configured for 60Hz to 50Hz conversion. This is useful when operating European or UK equipment in regions where the available AC power supply is 60Hz.
A Static Frequency Converter uses solid-state power electronics and is much lighter and more compact than rotating machinery. The SFC allows more control of output voltage and frequency, along with precise control of its V and A protection. Unlike rotary machines, there are no mechanical maintenance requirements
Yes. Three phase Static Frequency Converters are commonly used with industrial machinery, production equipment, motors, pumps, compressors, HVAC systems and specialist electrical loads. The final system rating should be selected based on the load type, inrush/starting current and duty cycle.
Yes. Manufacturers can use a PXe-330000-C 50Hz to 60Hz or 60Hz to 50Hz static frequency converter to test equipment under the same operating electrical conditions as the destination country. This is useful for testing, validation, factory acceptance testing and production quality checks.
Yes, three phase static frequency converters (3ph SFC) are often used in marine and shore power applications where vessel or dockside equipment requires a different supply frequency. Typical ship shore power operates at 60 Hz. However, because most local shoreside grids (such as those in the UK and Europe) operate at 50 Hz, ports often require SFC to match the vessel's frequency and voltage.
Key information includes the available input supply voltage and frequency, output voltage and frequency, load power rating kVA, load type, starting or inrush current, indoor/outdoor operating environment and any control or communication requirements like RS485.
Static Frequency Converter (SFC) fault diagnostic systems work by monitoring voltage, current, power, and phase loss. These errors are written to Non-Volatile RAM (NVRAM) for later viewing. SIL Watch-dog options are available for independent monitoring and reporting.
Watch-dog, or independent fault monitoring systems, are available for monitoring and reporting the health of Static Frequency Converters, in particular high kVA units. This autonomous fault diagnostic systems works by monitoring voltage, current and power and phase loss. These errors are written to Non-Volatile RAM (NVRAM) and can be sent via Networks and SMS.
Yes. PX Electronics can provide configurations to suit different voltage, frequency, power rating, enclosure types, control and monitoring requirements. This is particularly useful for industrial, marine and export testing applications where standard supply conditions or environment do not match those of the connected equipment.
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