FAQs
Help, Answers and Product Guidance
Find answers to common questions about PX Electronics products, technical support, compliance, calibration, ordering, shipping, payments, warranties and returns.
Use the glossary-style index below to browse questions by topic, or search for the information you need.
Yes. The series can be configured for fixed 50Hz, 60Hz or 400Hz output depending on the application.
Yes.
External transformers can be supplied in enclosed configurations where the installation requires greater protection against dust, contact or water ingress.
The required protection level should be selected together with the transformer cooling and environmental requirements.
Yes. The range includes high-current configurations.
The PXe-AC-DC-6-5000 example provides up to 5000A at an adjustable output of up to 6V DC.
Yes. PXe-D Series supplies can be configured for high-current operation.
The PXe-D-6-5000 example provides adjustable current up to 5000A at up to 6V DC.
Yes. The PXe-M Series can be configured to convert 230V single-phase input into a regulated 400V three-phase output.
The system generates all three output phases and provides the required voltage through its inverter and transformer arrangement.
Not from a typical domestic or light-commercial single-phase service.
At 230V, 60kVA represents approximately 261A before converter losses. A dedicated high-current single-phase connection, suitable protective equipment and correctly sized cabling would be required.
Yes, a PXe GPU can be used in the rain or snow if it is ordered with the IP54 option. For ultimate reliability, the GPU is best stored in a dry hangar or sheltered area.
Yes, where a particular load voltage or electrical interface requires it.
The transformer must be designed for the SFC output voltage, frequency, waveform, current and connected load.
It is an additional load-interface component and does not replace the integrated transformer isolation within the SFC.
Yes. Depending on the SFC, options can include RS232, RS485, Ethernet, Modbus, volt-free contacts, digital I/O and the PX SFC Remote Watchdog.
The required commands, alarm signals, network arrangements and remote-control permissions should be agreed before manufacture.
Some external accessories may be added later, but major items are best specified when the SFC is ordered.
Enclosure rating, transformer arrangement, output neutral, internal switchgear, connectors, cable entry, harmonic mitigation and cooling changes may require substantial redesign. Retrofit suitability must therefore be reviewed individually.
Yes.
A typical example is a 63kVA three-phase transformer with 440V primary, 400V secondary, Dyn5 connection, electrostatic shield and continuous S1 duty.
This type of transformer can be installed ahead of a suitably rated PXe-C Series SFC where the site voltage requires adaptation.
Where calibration is applicable, PX can supply calibration documentation or arrange accredited calibration through an approved supplier.
For test and measurement products, calibration can usually be supplied with the appropriate traceability documentation. For power conversion systems, Factory Acceptance Testing may be carried out using calibrated test equipment, with the relevant test records supplied where agreed.
If you require UKAS, NIST or other accredited calibration documentation, please confirm this at quotation stage so we can advise what is available and whether additional cost or lead time applies.
Yes, where available. PX can provide datasheets, user manuals, outline drawings or project-specific information to support customer review, installation planning or internal approval.
For configured systems, final drawings and manuals may depend on the agreed specification and may only be released once the configuration has been confirmed. If you need specific documents for approval before manufacture or shipment, please raise this during the quotation stage.
Yes.
A purpose-designed phase-shifting transformer can be supplied as part of a suitable multi-pulse PXe-C Series input configuration.
The transformer and converter input stage are engineered together as a coordinated system.
Only competent and authorised personnel should carry out internal maintenance.
The SFC must be correctly isolated, remote-start functions disabled where applicable, locked out and proven dead before internal access. PX documentation specifies a minimum 10-minute capacitor discharge period after mains isolation, but the waiting period does not replace electrical proving-dead procedures.
Yes. Optional RS232C, RS485 and GPIB interfaces are available for selected models, allowing integration with automated test equipment or remote control systems.
Yes. Optional RS232, RS485 and Modbus communication can be provided for remote operation and automated test integration.
The required commands and readback values should be confirmed before order.
Yes. The converter maintains its regulated AC output while the DC source remains within the specified minimum and maximum operating range.
Only the smallest ratings and loads may be suitable for a standard 13A outlet.
Most PXe-M Series converters require a dedicated circuit, protective device, isolator and industrial connection sized for the maximum input current.
Yes, provided it is correctly sized for the continuous load and starting demand.
Motors, compressors, transformers and equipment with large input capacitors should be assessed using their inrush current and its duration.
Yes. Adjustable-output configurations are available with constant-voltage and constant-current operation.
The standard adjustment range is typically 10% to 100% of the selected rated voltage or current.
Yes. Adjustable voltage and current are available, with constant-voltage and constant-current operating modes.
The usable adjustment range depends on the selected model.
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. In addition to 28Vdc configurations, selected PXe-400F-DC systems can provide a regulated 270Vdc output alongside 400Hz AC power. The AC and DC power sections operate independently and can be configured for simultaneous operation. DC power and current ratings are selected according to the aircraft, avionics or test-system requirement.
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.
Potentially, but the charging requirements must be reviewed carefully.
Battery chemistry, maximum charging voltage, current profile, temperature monitoring, isolation and charge termination must all be defined. A general industrial DC converter should not automatically be treated as a complete battery charger.
Manual and automatic source selection are provided locally. Optional RS232, RS485, USB and LAN interfaces can be supplied for remote monitoring and priority selection.
To prepare a quotation, PX Electronics will require the voltage, frequency and phase arrangement of both sources, load current or kVA, load type, transfer-time requirement, source priority, control requirements, enclosure arrangement and any applicable compliance requirements.
Yes, provided the alternative source has the correct voltage, frequency, phase arrangement and capacity for the connected load.
For example, equipment requiring 400Hz cannot be bypassed directly to a standard 50Hz mains supply.
Yes. The PXe-ACOS can be configured for 50Hz, 60Hz or 400Hz applications, including aircraft, avionics and defence power systems.
Both sources must be electrically compatible with the connected 400Hz load.
Yes.
RS232 and RS485 are available for remote operation and monitoring, with Modbus RTU support. TCP/IP and SNMP are available as communication options, and dry relay contacts provide remote alarm and shutdown indication.
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.
Potentially, but the charging profile must be reviewed carefully.
Battery chemistry, maximum voltage, charge current, temperature monitoring, isolation and charge termination all need to be defined. The PXe-D Series should not automatically be treated as a complete battery charger.
Optional RS232C, RS485 and GPIB interfaces are available. The required commands, status signals and measurement readback should be confirmed when ordering.
Yes. The inverter stage can generate a controlled three-phase output. A neutral can also be provided where the connected equipment requires phase-to-neutral power.
The PXe-LC provides a controlled high-current source suitable for use within calibration and verification systems.
Where formal traceable calibration is required, a suitable reference standard and measurement uncertainty should be defined separately. The internal display should not automatically be treated as the traceable reference instrument.
Yes.
The programmable high-current output makes the PXe-LC suitable for AC current-injection applications, provided the required current can be achieved within the compliance-voltage capability of the selected model.
Yes. The range can convert a single-phase 50Hz input into a three-phase 60Hz output.
It can also be configured for single-phase 60Hz input to three-phase 50Hz output.
Yes, provided the converter is selected for the complete machine load.
The assessment should include motors, transformers, heaters, electronic supplies, control circuits and starting current, rather than relying only on the main motor rating.
Yes. The output can be configured as three-phase three-wire or three-phase four-wire with neutral.
The expected phase imbalance, phase-to-neutral loads and neutral current should be stated when requesting a quotation.
Yes. The watchdog can supervise 50Hz, 60Hz and 400Hz SFC installations.
The monitoring inputs and alarm thresholds are configured around the actual converter output.
Yes. SMS notification can be provided using a suitable cellular communication module.
The customer must confirm mobile coverage, recipient details and responsibility for the SIM and data service.
Not automatically.
A transformer must be designed for the frequency at which it operates. A conventional 50/60Hz transformer should not simply be assumed suitable on a 400Hz SFC output.
Where a transformer is required at 400Hz, PX will confirm a design specifically suited to the required frequency, voltage, current and load.
Remote start, stop, acknowledge and reset functions can be provided where they are appropriate for the connected load and site control philosophy.
Local safety interlocks and emergency controls remain effective during remote operation.
Yes, but the converter must be sized for the starting current and its duration.
Direct-on-line motors and compressors can draw several times their normal running current. Soft starters or controlled starting can reduce the required peak capacity.
Yes. Selected models can be supplied with RS232, RS485 or Modbus communication for external control and automated testing.
Yes, for approved recoverable conditions.
Restart logic should confirm that the supply is stable, no manual-reset fault remains, safety interlocks are healthy and the connected equipment is suitable for automatic restart.
Potentially. Retrofit suitability depends on the existing SFC control system, available signals, panel space, communications and whether remote commands can be added safely.
A technical review is required before a retrofit is offered.
Yes. Integration can be provided using Modbus, Ethernet, RS485, volt-free contacts or project-specific interfaces.
The required register map, alarm list and control permissions should be agreed before manufacture.
Yes. Event history can record time-stamped alarms, faults, operating changes, remote commands, resets and restart attempts.
The storage capacity and download method depend on the selected controller.
DC-link capacitors are service-life components, but a fixed replacement interval is not appropriate for every installation.
Their condition depends on temperature, operating hours, load and the converter design. Capacitors should be assessed during planned maintenance for swelling, leakage, venting, movement or heat discolouration.
Fast transfer requires the sources to operate within the agreed voltage, frequency and phase limits.
Where the sources are not sufficiently synchronised, the transfer may be delayed, inhibited or completed using a longer break-before-make sequence.
No.
The external transformer performs a specific interface function outside the converter, such as changing a 440V site supply to 400V.
The PXe-C Series then receives the correctly matched supply and continues to provide its normal frequency conversion, voltage regulation, protection and integrated transformer isolation.
Not automatically.
IP54 addresses dust and splashing-water ingress, but it does not by itself address condensation, corrosion, salt spray, direct sunlight, ultraviolet exposure, extreme temperature or wind-driven rain. Outdoor use requires a review of the full environment and installation method.
An IP54 enclosure reduces the risk of dust and water ingress but does not remove the need for maintenance.
Cooling paths must still remain clear, filters and fans still require inspection, and seals, cable glands and enclosure panels should remain correctly fitted. The IP rating also depends on the enclosure being complete and properly closed.
No. Increasing the voltage does not create additional electrical capacity.
The available output remains limited by the power and current that can be drawn from the single-phase input, together with converter losses.
Yes.
The PXe-BLS provides a pure sine-wave AC output with published total harmonic distortion of 3% or less, making it suitable for sensitive communication, monitoring and control equipment.
The established 1.2kVA / 120A configuration includes local measurement of voltage, current, RMS current, frequency, power and power factor together with RS485 Modbus communication.
Measurement and communications requirements for other current ratings should be confirmed when the system is specified.
No. Remote monitoring can identify faults and operating trends, but it does not replace routine inspection, cleaning, connection checks, fan checks or planned servicing.
Not in every configuration. Local PLC, volt-free contact and RS485 monitoring can operate without an internet connection.
SMS or remote network access requires the relevant cellular or site-network connection.
Start with the voltage, current, phase arrangement, neutral and protective-earth requirements. Then consider cable size, connector locking, expected mating cycles, environmental exposure, IP rating, strain relief and compatibility with the connected equipment.
A connector should not be selected from current rating alone. Contact arrangement, operating frequency, cable diameter, temperature and whether it can be disconnected under load are also important.
Changes in sound and airflow are useful indicators.
A fan that stops, runs intermittently, becomes noticeably noisier, vibrates, scrapes or produces less airflow than expected should be investigated. Significant deposits on the fan blades can also reduce cooling performance.
A lower DC input voltage requires more current to deliver the same output power.
Low-voltage systems therefore need larger cables, terminals and protective devices and may have a lower practical maximum capacity than higher-voltage DC systems.
The system monitors the available DC and AC sources and supplies the load from the selected operating path.
If the active source becomes abnormal, the BLS transfers to the alternative source where it is available. The published transfer time is 5ms or less.
The published changeover time is less than 30ms in synchronised mode.
Faster transfer may be available depending on the connected load, source conditions and selected system configuration.
A general-purpose inverter usually provides a standard single-phase 50Hz or 60Hz output from a battery.
The PXe-DC-AC Series can be configured for specialist single-phase or three-phase outputs, including 400Hz power, high-voltage DC input and wider DC operating ranges.
The SFC’s internal protection acts directly on the converter to respond to conditions such as overload, overtemperature, overvoltage or short circuit.
The watchdog supervises the wider operating state, records events and communicates status remotely. It supports the internal protection system but does not replace it.
An annual planned inspection is a sensible starting point for many indoor SFC installations.
The final interval should reflect operating hours, load duty, ambient temperature, dust, humidity and how critical the connected equipment is. More demanding environments may require considerably more frequent cooling and filter inspections.
This depends on the environment.
A clean electrical room may justify a 12-month inspection interval, while a general plant area may require six-month checks. Dusty, warm or heavily used installations may need inspection every three months or more frequently.
Filters should be cleaned or replaced before airflow becomes restricted.
Selected M Series configurations can provide three-phase 400Hz output. For dedicated aviation and avionics applications, the PX Electronics 400Hz SFC range may be the more appropriate starting point.
A bypass can only continue supplying the load where an alternative three-phase source with the correct voltage, frequency and capacity is available.
A single-phase mains source cannot be connected directly to the three-phase load as a functional bypass.
es.
Maintenance bypass functionality can support service access while retaining an available supply path to the connected load.
The exact bypass arrangement should be confirmed for the selected installation and operating procedure.
The transfer is designed to minimise disruption to the connected equipment, but less than 30ms still represents a brief interruption.
The load should be checked to confirm that it can tolerate the specified transfer time.
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.
The standard watchdog is a supervisory monitoring and control system. It is not automatically a safety-rated or SIL-certified system.
Where a certified safety function is required, the complete control architecture, components, logic and validation must be designed and assessed accordingly.
A 5V model is suitable where the complete test circuit has very low impedance and no more than 5V is required to establish the desired current.
A 10V configuration provides additional voltage capability where cable resistance, terminals or the device under test require greater voltage.
PX can review the proposed current and test-loop impedance before confirming the appropriate configuration.
Lead times vary depending on the product, configuration and documentation required.
Some products may be available on shorter lead times, while bespoke Static Frequency Converters, AC Power Sources and Ground Power Systems are usually configured to order. Where Factory Acceptance Testing, customer inspection, special documentation or export packing is required, this may also affect the project schedule.
We will confirm the estimated lead time on the quotation or order acknowledgement.
Typical applications include current transformers, current sensors, ammeters, shunts, protection relays, circuit breakers, busbars, cables, conductors and other low-impedance electrical components.
Depending on the available signals, it can monitor input and output voltage, output current, frequency, power, phase loss, run status, warnings, trips, temperature, fan operation, breaker position and communications health.
Typical nominal inputs can include 24/28V, 48V, 110/125V, 220V, 270V, 440V, 600V and 750V DC.
The final input range is configured around the source and required output power.
Output frequency is programmable from 40Hz to 500Hz, allowing operation at 50Hz, 60Hz, 400Hz and other test frequencies within the available range.
The SFC and watchdog continue to follow their local control and protection logic. Loss of communications can itself be recorded as an alarm.
Remote visibility and commands will remain unavailable until the connection is restored.
PX will normally require the continuous AC load, starting or peak demand, nominal DC supply and operating range, available AC bypass voltage, required output voltage and frequency, preferred operating mode, communication requirements and rack-installation details.
For higher-current DC systems, cable length, conductor size and the available DC source current should also be confirmed.
PX will normally need the required current, compliance voltage or expected test-loop impedance, operating frequency, test duration, duty cycle, lead length, connection method and any measurement, remote-control or calibration requirements.
PX Electronics will require the nominal, minimum and maximum DC input voltage, available DC current, required AC phase arrangement, output voltage and frequency, continuous load, load type, starting current, neutral requirement, installation arrangement and applicable standards.
PX Electronics will require the available AC input, required DC voltage and current, continuous power, load type, duty cycle, ripple and regulation requirements, control method, communications, output-cable arrangement and required test documentation.
PX Electronics will require the input supply, required DC voltage and current, load type, operating mode, duty cycle, ripple and regulation requirements, control method, output connections and required test documentation.
PX Electronics will require:
- SFC model and rating
- Input and output electrical details
- Required monitored values and status signals
- Required alarms and notification recipients
- Remote-control requirements
- Automatic restart policy
- Communication protocol
- Site network or mobile connectivity
- Installation and enclosure requirements
- Required drawings, testing and commissioning support
A 28Vdc/400Hz Ground Power Unit (GPU) supplies both regulated 28Vdc power and 115/200V AC 400Hz power from a standard three phase AC supply. It is commonly used for aircraft ground power, avionics testing, maintenance operations, and production line testing, where both DC and AC aircraft power are required.
A 400Hz Static Frequency Converter converts standard 50Hz or 60Hz mains power into 400Hz AC output. It is commonly used for avionics testing, aerospace production, MRO facilities, aircraft equipment testing and specialist 400Hz power applications.
A DC-to-AC Static Frequency Converter takes power from a DC source and generates a regulated AC output at the required voltage, phase arrangement and frequency.
A dual redundant AC power supply provides a critical AC load with access to two independent source paths.
The PXe-BLS uses a DC-powered inverter together with an AC bypass supply and can automatically transfer between them when the selected source becomes abnormal.
Typical applications include shunt testing, current sensor testing, busbar testing, cable testing, contactor testing, current injection and low-voltage high-current equipment validation.
A multi-pulse transformer provides separate phase-shifted AC supplies for multiple rectifier bridges.
When used with a suitable SFC rectifier architecture, this arrangement can reduce dominant lower-order input current harmonics compared with a conventional six-pulse input.
A power analyser is a test instrument used to measure electrical power behaviour in more detail than a standard wattmeter. Power analysers can typically measure complex waveshapes and can measure voltage, current, crest factors, real power, apparent power, reactive power, power factor, frequency, harmonics and energy consumption, depending on the model and configuration.
A programmable AC power source is used to simulate different electrical grid conditions during product testing, validation and troubleshooting. Engineers commonly use these systems to test electronics, appliances, motors and industrial equipment under controlled voltage and frequency conditions.
A programmable DC power supply converts an AC input into adjustable, regulated DC voltage and current.
It allows engineers to reproduce defined DC conditions for testing, powering equipment or industrial processes.
A pure sine wave inverter converts DC power into AC output with a smooth waveform similar to mains electricity. This makes it suitable for equipment that may not operate correctly from lower-quality modified sine wave inverters.
A single 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 testing of AC-powered electronic modules, small motors and other single phase equipment where appropriate supply voltage and frequency must be connected
A single-phase to three-phase Static Frequency Converter takes an available single-phase AC supply and generates a regulated three-phase AC output.
The system can also change the output voltage and frequency to match the connected equipment.
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.
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.
An AC High Current Calibrator provides a controlled AC current for calibration, verification and electrical testing.
The PXe-LC Series is intended for low-voltage, high-current applications where the principal requirement is to establish a defined AC current and frequency through the device under test.
An AC-to-DC static converter takes an AC mains input and produces regulated DC voltage and current.
Unlike an AC-output Static Frequency Converter, the DC output has no operating frequency.
An automatic changeover switch transfers a connected load between two independent AC sources when the active source fails or moves outside its permitted operating limits.
An SFC Remote Watchdog is an independent PLC-based monitoring system that supervises the operating condition of a Static Frequency Converter.
It can record alarms, send remote notifications and provide selected remote-control functions.
Compliance voltage is the maximum voltage the current source can develop in order to maintain the programmed current through the connected circuit.
The required voltage depends on the combined impedance of the device under test, output leads, terminals and other series components.
A mechanical changeover switch normally uses contactors or motor-operated switching devices. Its transfer time is partly determined by the physical movement of those components.
The PXe-ACOS uses DSP-controlled solid-state switching, allowing faster transfer where the sources and connected load are suitable.
A conventional voltage-matching transformer uses separate primary and secondary windings.
An autotransformer uses an electrically connected winding arrangement and does not provide galvanic separation between its input and output. It can provide a more compact solution where voltage adaptation is the only additional requirement.
Whichever option is selected, the integrated isolation within the PXe-C Series remains unchanged.
In constant-voltage mode, the converter maintains the selected voltage while current changes with the load.
In constant-current mode, the converter maintains the selected current while output voltage changes within the available range.
In constant-voltage mode, the supply maintains the selected voltage while current changes according to the load.
In constant-current mode, the supply maintains the selected current while voltage changes within the available output range.
In DC-dominant mode, the inverter normally powers the load from the DC source, and the AC supply acts as a bypass.
In AC-dominant mode, the AC bypass normally powers the load and the inverter provides the alternative supply from the DC source.
The preferred arrangement depends on the site’s normal power architecture.
A VFD is primarily intended to control the speed and torque of a compatible motor. Its PWM output is normally connected directly to that motor.
The PXe-M Series provides a regulated three-phase AC supply. It can therefore support suitable complete machinery containing motors, transformers, control circuits, heaters and electronic power supplies.
The PXe-M Series is available up to 60kVA.
Higher ratings are not offered with single-phase input because the required input current becomes impractical for most low-voltage single-phase installations.
The PI150 is used to control the speed of AC motors in applications such as fans, pumps, conveyors, compressors, packaging machinery and light industrial automation systems.
The PI550 is used to control AC motors in demanding industrial applications where stable speed, torque and process control are required. Typical uses include pumps, fans, compressors, conveyors, textile machinery, water treatment systems and production equipment.
The series is used for industrial DC power, product testing, current injection, DC motor testing, component ageing, high-current testing and specialist low-voltage or high-voltage DC applications.
The PXe-ACOS can be used for Static Frequency Converter bypass, duty and standby SFC selection, dual 400Hz power sources and automatic transfer between compatible utility, generator or conditioned AC supplies.
The PXe-BLS is used where communication, monitoring, control or infrastructure equipment requires a dependable AC supply and more than one available power source.
Typical applications include telecoms, SCADA, utilities, railway systems, control rooms, emergency communications and remote infrastructure.
The PXe-PA6000 is used for measuring power consumption and basic electrical performance on test benches, in workshops and during service checks. It can measure watts, VA, power factor, energy consumption, voltage, current, resistance and frequency.
A Static Frequency Converter normally requires relatively little routine maintenance compared with rotating machinery.
Maintenance is mainly focused on cooling airflow, filters where fitted, fan operation, electrical connections, cleanliness, output performance and reviewing any alarms or changes in operating behaviour.
Common options include aircraft cable assemblies, appropriate connectors, line voltage-drop compensation, output interlocks, mobile construction, cable storage, remote monitoring, external metering and combined 28V DC output.
The cable length, load current and required voltage at the aircraft should be provided before the system is specified.
PXe-LC Series configurations are available up to 600A AC.
The 10V compliance family provides ratings from 100A to 300A, while the 5V compliance family provides ratings from 100A to 600A.
Standard series information includes 30V, 60V, 100V, 150V, 300V, 600V, 900V and 1200V DC.
Application-specific voltages can also be considered where the required voltage, current and power are defined.
The PXe-ACOS monitors input overvoltage, undervoltage, phase failure and incorrect phase sequence.
Output protection includes overvoltage, undervoltage, overload, short circuit and overtemperature. MCCBs are provided for the normal source, alternate source and output.
Protection includes overvoltage, overcurrent, overtemperature and short-circuit protection.
Adjustable voltage and current limits can also be used to restrict the permitted output.
The PXe-BLS includes protection for overload, overtemperature, short circuit, DC input voltage conditions, AC input voltage limits and reverse polarity at the DC input.
Local audible and visual alarms provide additional fault indication.
Protection includes overvoltage, overcurrent, overtemperature and short circuit.
Maximum voltage and current limits can also be configured to restrict the permitted output.
Consider dust, water direction, cleaning methods, humidity, condensation, temperature, corrosion, salt, ventilation, cable entries and the IP rating of fitted connectors.
A high IP rating can also reduce natural airflow, so the cooling system and enclosure size may need to change.
Do not repeatedly reset an unexplained protective trip.
Record the alarm or fault indication, connected load and operating conditions. Check for obvious airflow, supply or load problems and contact PX Electronics where the cause is not clear or the trip repeats after a controlled reset.
First check that the air intake and exhaust are clear, filters are clean, cooling fans are operating and sufficient ventilation is available around the converter.
Repeated overtemperature warnings or reduced airflow should be investigated rather than accepted as normal operation.
The transformer rating depends on its actual duty within the SFC system.
PX considers continuous load, transformer losses, overload requirements, starting current, ambient temperature, enclosure, harmonic content and duty cycle before confirming the transformer rating.
The transformer should therefore not be selected solely by matching its nominal kVA to the SFC nameplate.
Options can include alternative input and output voltages, phase arrangements, 50Hz, 60Hz or 400Hz output, higher IP ratings, conformal coating, remote communications, SFC watchdog monitoring, industrial connectors, aircraft cables, mobile construction and factory testing.
Availability depends on the converter series, rating and application.
Hard-wired terminals are normally preferable for permanently installed and higher-current SFC systems.
They allow the installation cable to be sized around the actual current, voltage drop and site wiring method without introducing the current, contact-resistance or physical limitations of a detachable connector.
It is typically recommended for SFCs above 50kVA, unattended installations, remote sites and systems supporting important operational loads.
It may also be worthwhile on smaller converters where access is difficult or early fault notification is important.
Conformal coating should be considered for humid, dusty, corrosive or condensation-prone environments.
It adds protection to selected electronic assemblies, but it does not replace the need for a correctly specified enclosure, filtered cooling and suitable maintenance. PX lists conformal coating as an available option for harsh or humid applications.
PX should be contacted where there are repeated warnings or shutdowns, unstable output, reduced load capability, abnormal fan behaviour, unusual noise, burning or electrical smells, heat damage, moisture, corrosion or concerns about electrical connections.
Model and serial number, alarm information, operating conditions, measurements and photographs should be provided where possible.
PXe-BLS configurations are available around nominal 24V, 48V, 110V and 220V DC systems.
The available power rating depends on the selected DC voltage because lower-voltage systems require substantially higher DC current.
Emergency-stop operation, short circuit, repeated overload, abnormal temperature and faults indicating possible equipment damage should normally require inspection or manual reset.
The final cause-and-effect logic is agreed for each project.
IP22 is generally suitable for clean, dry indoor areas. IP32 provides increased protection for indoor industrial locations. IP54 is more appropriate where dust or splashing water may be present.
The correct choice depends on the actual installation, cooling requirement and environmental exposure rather than the location description alone.
PX Electronics supplies a range of power conversion, test and measurement products, so the best product page will depend on the application.
For frequency conversion, please refer to our Static Frequency Converter pages, including 50Hz, 60Hz and 400Hz systems. For aviation and ground support applications, please see our 400Hz and 28V DC ground power products. For controlled AC output, laboratory testing or production test applications, our AC power supplies and programmable AC power sources may be more suitable.
If you are unsure which product category applies, please contact us with your supply details, load requirements and application. We can then point you towards the most suitable product or configuration.
At high current, even a small amount of resistance produces a significant voltage drop.
Cable length, conductor cross-section, terminals and connection resistance all consume part of the available compliance voltage. Keeping the test leads appropriately sized and as short as practical helps maximise the voltage available across the device under test.
PXe-C Series Static Frequency Converters already incorporate transformer isolation as part of the converter design.
An additional external transformer is only used where the wider installation requires another electrical function, such as matching a 440V or 480V site supply to a 400V SFC input, providing a particular winding or neutral arrangement, adapting the load voltage or supporting a multi-pulse input configuration.
The external transformer therefore complements the SFC rather than replacing its integrated transformer isolation.
Yes, the PX Electronics single phase Static Frequency Converters converts 50Hz to 60Hz and can be configured for 60Hz to 50Hz or 50/60Hz to 400Hz
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. The Ground Power Unit (GPU) is designed to provide simultaneous 28Vdc and 400Hz AC outputs, enabling multiple aircraft systems or test equipment to be powered simultaneously. This reduces the need for separate power units and improves operational convenience and efficiency.
The PXe-FVS Series converts DC battery power into 110V or 220V AC output. It is used where clean AC power is required from a DC source, such as a battery bank or backup DC supply.
The PXe-PA900 measures key AC power parameters, including voltage, current, watts, VA, VAR, power factor, frequency, harmonics, and energy. It can also be configured for waveform, vector, and cycle displays, as well as historical trend views, providing engineers with more information than a basic power meter.
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 standard variable-frequency drive controls motor speed by varying the output frequency and voltage. A current vector inverter provides more advanced motor control by managing current and torque behaviour more precisely, thereby improving response and stability under changing load conditions.
A power meter is generally used for practical measurement of common electrical values such as power, voltage, current and energy consumption. A power analyser is normally used for more detailed testing, such as harmonic analysis, multi-channel efficiency measurement and formal validation work.
A standard AC power supply typically provides fixed output, while a programmable AC power source allows engineers to adjust voltage, frequency and output parameters to simulate real-world operating conditions for testing and development.
In practical use, the terms are often used for similar equipment. A variable speed drive controls motor speed by adjusting the output frequency and voltage, while “motor inverter” or “frequency inverter” is commonly used to describe the power conversion stage that drives the motor.
Product-specific FAQs are included on the relevant product pages, alongside specifications, configuration options and datasheets.
These FAQs cover technical questions that relate directly to the product, such as input and output options, frequency conversion, load types, communications, monitoring, aircraft ground power requirements and typical applications.
The main FAQ page is intended for general questions about ordering, documentation, compliance, shipping, support and the quotation process.
Aircraft use 400Hz power because higher frequency electrical systems allow transformers, motors and associated equipment to be smaller and lighter than equivalent 50Hz or 60Hz systems. This makes 400Hz power well suited to aviation applications.
Yes. PXe 400Hz Static Frequency Converters can be configured to operate from standard 50Hz or 60Hz mains input supplies, depending on the site power available and the required output.
Yes. Programmable AC sources are commonly used to simulate both 50Hz and 60Hz power conditions for products being sold into different international markets.
Yes, a single phase Static Frequency Converter (SFC) can convert to three phase 50Hz, 60Hz and 400Hz along with various voltage options Model PXe-130000-S
Yes, a three phase Static Frequency Converter (SFC) can convert to single phase AC supply.
Yes. PX Electronics can help you identify the most suitable product or configuration based on your electrical requirements, load type and operating environment.
To support this, please provide as much information as possible, including the available input supply, required output voltage and frequency, load rating, phase configuration, duty cycle, installation location and any control or communication requirements.
For Static Frequency Converters, AC power sources, 400Hz ground power units and other configured systems, this information helps us recommend an appropriate solution rather than relying on a generic catalogue selection.
Yes. The PA6000 measures power factor as well as active power, apparent power and energy consumption, making it useful for checking how connected loads behave electrically.
Yes. The PI150 is suitable for pump and fan applications where motor speed needs to be adjusted to match demand. This can help reduce mechanical stress and avoid running motors at full speed unnecessarily.
Yes. The PI550 supports vector control without encoder feedback and V/F control. This makes it suitable for many industrial motor applications that require improved speed and torque control without installing a motor encoder.
The unit accepts a standard 50Hz or 60Hz power, depending on configuration. Input voltage and phase options can be specified to suit site requirements, including single-phase or three-phase supplies.
The PXe-FVS Series is available for 12V, 24V, 48V, 60V and 72V DC input systems. The correct version depends on the battery bank or DC supply used in the installation.
A power meter is generally used for straightforward measurements such as watts, voltage, current, and energy consumption. A power analyser provides deeper measurement and diagnostic capability, including harmonic analysis, phase relationships, waveform capture, power factor behaviour and multi-channel efficiency testing.
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.
Many PX Electronics products are based on established product ranges, but they are often configured to suit the customer’s electrical specification and application.
For example, Static Frequency Converters, AC power sources and ground power systems may be supplied with specific input and output voltages, frequency settings, enclosure options, control interfaces, monitoring features or documentation requirements.
Where a standard product is suitable, we will advise accordingly. Where the application needs a more specific configuration, we will confirm this during the quotation process.
Yes. The PA6000 includes an RS-232 interface and supplied software for transferring and analysing measurement data on a computer. The current page also shows software capability for displaying and storing measured values over time.
Yes. The PI550 includes built-in PID control, making it suitable for pressure, flow and ventilation control applications. This is useful for pumps, fans, water treatment systems and HVAC-related equipment.
Yes. The PXe-PA900 can be used to test static frequency converters by measuring output voltage, current, frequency, real power, apparent power, reactive power, power factor, harmonics and load response. However, the main use for a power analyser is measuring from the SFC to the load under test. This is useful during factory acceptance testing, commissioning, fault investigation and customer witness testing.
Yes. The SFC system can be convert 60Hz to 50Hz. This is useful when operating European or UK equipment in US, Cananda and South America regions where the available AC power supply is 60Hz
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.
Yes. The PI150 supports V/F control and sensorless vector control, making it suitable for general motor control applications where stable speed and torque performance are required.
Yes. The GPU uses advanced IGBT-based solid-state inverter technology and filters to deliver clean, low-distortion power with precise voltage and frequency control. This makes it suitable for sensitive avionics, aircraft electrical systems, and laboratory test environments.
The range is available with 110V AC or 220V AC output, depending on the selected model and application requirement.
Variable AC power sources are widely used in aerospace, electronics manufacturing, appliance testing, automotive development, renewable energy testing and industrial product validation.
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.
Common aircraft 400Hz output configurations include 115/200V and 120/208V. The correct output voltage depends on the aircraft system, test bench or ground support application.
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, when used with a suitable clamp or current transformer arrangement. The page describes clamp and CT input options, including current converter support and an optional current adaptor.
Yes. The drive includes RS485 communication and supports multiple command sources, including keypad, terminal control and serial communication. This allows it to be used in control panels and automated machinery systems.
Yes. Many engineers use programmable AC power sources for compliance testing, product certification and export validation where products must perform under different regional power standards.
Yes. Built-in RS485 communication enables the inverter to be integrated into control systems that require remote monitoring, control, or automation.
Yes. The converter is suitable for avionics laboratories, aircraft equipment testing and aerospace workshops where stable 400Hz AC power is required for sensitive systems.
The more information we receive at the start, the more accurately we can specify and quote the correct product.
As a guide, please provide the available input supply, required output voltage and frequency, single phase or three phase requirements, load rating in kVA, kW or current, and details of the equipment being powered.
It is also helpful to know the load type, such as motors, compressors, avionics, test equipment or resistive loads, along with any known inrush current, duty cycle, installation environment, enclosure requirement, communication interface or documentation requirement.
For larger systems or project-based requirements, drawings, load schedules, specifications or site information can also be useful.
The system includes input-side circuit breakers and fuses to provide isolation and protection against over-current and electrical faults. Built-in electronic protection also monitors for overload, short circuit, over-voltage and over-temperature conditions.
These protection features help safeguard the Ground Power Unit, its internal components and the connected aircraft or test equipment during operation.
Pure sine wave output helps support sensitive electronics, control equipment and motor-driven loads more reliably than modified sine wave output. It can also help reduce noise, heat and poor operation in certain types of connected equipment.
A Static Frequency Converter uses solid-state power electronics and is much lighter and more compact than rotating machinery. The SFC provides greater control over output voltage and frequency, along with precise control of Voltage and current protection. Unlike rotary machines, there is no mechanical maintenance requirements
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
The front panel wattmeter display on a static frequency converter is useful for operational checks, but it does not provide the same level of measurement detail as a dedicated power analyser. The PXe-PA900 allows engineers to examine waveform quality, harmonic content, inrush current, phase imbalance, power factor, and load-dependent behaviour more closely.
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.
Depending on the model configuration, programmable AC power sources can be used to simulate voltage fluctuations, frequency variations and abnormal power conditions for product testing.
Yes. PX Electronics can provide a formal PDF quotation for standard products, configured systems and project-specific requirements.
Where relevant, the quotation can include the proposed product configuration, key electrical details, commercial terms, estimated lead time, optional items, documentation requirements and any project notes that have been agreed during the enquiry stage.
For configured systems, we may ask for additional technical information before issuing a final quotation, particularly where the application involves motor loads, high inrush current, unusual supply conditions or specific compliance requirements.
Yes. The inverter can be used with battery systems charged by solar, wind or other DC generation sources, provided the wider system includes suitable charge control, battery protection and DC isolation.
Yes. Adjustable output options can be provided where engineers need to test equipment across different voltage or frequency conditions.
Typically 3, but that depends on the input/output arrangement and the test objectives. A single phase output may only require one channel. A three phase system typically requires multiple channels, especially when assessing total power, phase imbalance, phase-to-phase behaviour, or input/output efficiency. The PA900 can be configured with up to four power measurement channels (channel combinations can be described as Virtual Power Analyser VPA).
Yes. Compact single phase SFC models are well suited to laboratories and bench testing, product validation areas and technical workshops where controlled AC voltage and frequency output is required
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.
The 28Vdc/400Hz Ground Power Unit (GPU) is available in both fixed and mobile configurations. This makes it suitable for use in aircraft workshops, MRO maintenance facilities, production areas, and flight line support where flexibility or portability is required.
It may be useful for basic checks on smaller systems or connected loads, but it should not be positioned as the main instrument for full SFC commissioning. For detailed SFC testing, harmonics, efficiency and multi-channel analysis, the PA9xx Series power analysers are more appropriate.
The PI550 includes inverter protection functions for overvoltage, undervoltage, overcurrent, overload, overheating, communication faults, external faults, and short-circuit-to-ground conditions.
The PI150 includes inverter protection functions such as overvoltage, undervoltage, overcurrent, overload, overheating and short circuit protection. These functions help protect both the drive and connected motor during abnormal operating conditions.
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.
Yes, the PXe-S Series SFC can be used for imported or export equipment testing. Manufacturers can use a 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 validation, factory acceptance testing and production quality checks
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. PX Electronics regularly supports project-specific requirements where a standard catalogue item is not the best fit.
This may include Static Frequency Converters with specific input or output voltages, 400Hz aircraft ground power systems, AC power sources, custom enclosures, communication options, monitoring features, special documentation or Factory Acceptance Testing.
Project-specific requirements should be discussed during the enquiry stage so that the quotation reflects the actual electrical, mechanical and documentation requirements of the application.
Yes, with the correct channel configuration. Engineers can use multiple channels to compare converter input and output power, which is useful for checking efficiency, losses, cooling and load-dependent performance in static frequency converters, programmable AC sources, and inverter systems. Typically CH1, CH2 (2 wattmeter method) for converter input and CH3, CH4 for the converter output.
Selection should be based on the continuous load, start-up current and type of equipment being powered. Motors, pumps, compressors and capacitive loads may require additional capacity above their normal running power.
A standard Static Frequency Converter may be configured for 50Hz to 60Hz or 60Hz to 50Hz conversion. A 400Hz static frequency converter is specifically designed to provide aircraft-standard 400Hz output for aviation, avionics and specialist test applications.
Yes. The PI550 is positioned for more demanding industrial machinery and process applications than a compact general-purpose drive. It is better suited for applications where torque response, load variation, and continuous operation are important.
A Ground Power Unit uses solid-state power electronics and is much lighter and more compact than rotating machinery. The GPU provides greater control over output voltage and frequency, as well as precise control of V and A protection. Unlike rotary machines, there are no mechanical maintenance requirements
Common applications include power supplies, motors, household appliances, aerospace equipment, industrial controls, EV components and electronic products.
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.
Yes. The PXe-PA900 supports voltage and current harmonic analysis with absolute measurement or bargraph displays. This is useful for 400Hz Static Frequency Converter testing, avionics power checks, and applications where waveform quality needs to be reviewed or documented for conformance.
Yes. Optional communication interfaces allow integration into automated testing systems and production environments where repeatable testing is required.
Ground Power Units (GPU) fault diagnostic systems work by monitoring voltage, current, and power, as well as phase loss. These errors are written to Non-Volatile RAM (NVRAM). SIL Watch-dog options are available for independent monitoring and reporting.
The documentation supplied depends on the product and the project requirements.
Typical documentation may include a datasheet, user manual where available, Certificate of Conformity, calibration certificate, test report, Factory Acceptance Test document, packing list and commercial invoice.
For configured Static Frequency Converters, ground power systems or AC power systems, documentation requirements should be confirmed at quotation stage. This helps ensure the correct documents are included with the order and avoids delays at delivery or commissioning.
PX will need to confirm the available input supply, required output voltage, output phase arrangement, kVA rating, load type, duty cycle, enclosure format and any remote control or communication requirements.
Key information includes the available input supply voltage and frequency, output voltage and frequency, load power rating kVA, load type, knowledge of starting or inrush current, indoor/outdoor operating environment and any control or communication requirements like EtherNet RS485
The PXe-FVS Series includes protection against input over-voltage, input under-voltage, overload, over-temperature and output short circuit conditions.
Yes. Factory Acceptance Testing can be provided where required and should be agreed at quotation stage.
The scope of the FAT will depend on the product and application. For power conversion systems, this may include checks for input and output voltage, output frequency, load performance, protection functions, alarms, communications, visual inspection and other agreed test points.
If a customer has a specific FAT procedure or project specification, this should be provided as early as possible so we can confirm what can be tested and documented.
We can also provide third party witness testing, through an independent company. We use SGS as our preferred partner, but can discuss customer requirements to suit your needs.
Yes. The PXe-PA900 includes measurement and display functions that can help engineers investigate inrush and transient behaviour. This is useful when testing transformers, motors, rectifier inputs, capacitive input power supplies and other loads connected to a static frequency converter.
Static Frequency Converter (SFC) fault diagnostic systems work by monitoring temperature, voltage, current, power and phase loss. These errors are written to Non-Volatile RAM (NVRAM) for later viewing. SIL Safety Integrity Level "Watch-Dog" options are available for independent monitoring and reporting
Static Frequency Converter SFC fault diagnostic systems work by monitoring voltage, current and power and phase loss. These errors are written to Non-Volatile RAM (NVRAM). SIL Watch-dog options are available for independent monitoring and reporting.
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.
Watchdog or independent fault monitoring is physically outside the GPU, meaning it does not rely on the GPU for its auxiliary power, so it can monitor and report the health of Ground Power Units, particularly high-kVA units with critical loads. These autonomous fault-diagnostic systems monitor voltage, current, power, and phase loss. These error conditions are written to Non-Volatile RAM (NVRAM) and can also be sent via VPN, networks, and SMS.
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.
Yes, where practical, customer-witnessed Factory Acceptance Testing can be arranged.
This should be agreed before the order is placed, as witnessed testing may affect scheduling, documentation, test equipment requirements and project lead time.
For some projects, a remote review of test results, photographs, video evidence or formal FAT documentation may also be suitable.
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 to monitor and report the health of Static Frequency Converters, particularly high-kVA units. These autonomous fault-diagnostic systems monitor voltage, current, power, and phase loss. These errors are written to Non-Volatile RAM (NVRAM) and can be sent via Networks and SMS.
Watch-dog or independent fault-monitoring systems are available for monitoring and reporting the health of Static Frequency Converters, particularly high kVA units. These autonomous fault diagnostic systems work by monitoring temperature, voltage, current, power, and phase loss. The Watch Dog provides monitoring even with catastrophic power loss, errors can be written to Non-Volatile RAM, Networks and sent via SMS or VPN
The current input option depends on the expected current level and measurement method. Direct shunt inputs are useful for precision measurement; higher-current inputs suit heavier loads; and the “X” option, a voltage input for external current transducer inputs, is useful when clamps, CTs, or other external sensors are preferred. PX Electronic would confirm the current range and optimal test setup before specifying the analyser.
Yes. The PXe-PA900 can record selected measurement values for later review. This supports FAT documentation, commissioning packs, customer witness testing, service reports and internal quality records. The power analyser is supplied with calibration certificates.
Yes. PX Electronics can provide custom configurations to suit different voltages, frequencies, power ratings, enclosure types, control and monitoring requirements. This is particularly useful for industrial, marine and export testing applications where standard supply conditions do not match those of the connected equipment
Yes. All PX Electronics products are supplied with a Certificate of Conformity.
The certificate confirms that the product has been supplied in accordance with the agreed order requirements and applicable product documentation. For configured systems, such as Static Frequency Converters, AC power sources and ground power systems, the Certificate of Conformity will relate to the final product configuration supplied.
If you require any additional project-specific documentation, please advise us at quotation stage so this can be reviewed and included where applicable.
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.
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.
PX Electronics can confirm the applicable conformity position for each product or configured system at quotation stage.
Where relevant, supporting documentation such as CE or UKCA declarations, certificates of conformity, supplier declarations or technical documentation can be provided with the order.
For bespoke or configured systems, the compliance position may depend on the final specification, installation environment and intended use, so it is important to raise any specific compliance requirements during the enquiry stage.
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.
Yes. ISO 17025-accredited calibration with data is available as a chargeable option and is performed by an external Laboratory. This should be specified when traceable measurement evidence is required for customer acceptance, audit records, or formal validation work.
Yes. Test reports can be supplied where agreed as part of the order.
For power conversion equipment, this may include test results for voltage, frequency, load operation, protection functions, communications, alarms, harmonic distortion or other agreed performance checks.
The exact test scope should be agreed before manufacture or dispatch, especially where the report needs to satisfy a customer specification, witness test requirement or project handover process.
PX should confirm the SFC output phase arrangement with the customer, voltage, expected current, load type, whether input/output efficiency is required, whether harmonic analysis is required, the preferred current measurement method and whether recorded data or ISO 17025 calibration is needed. For 400Hz systems, the required harmonic range, intended current sensor bandwidth and any aviation test requirements should also be confirmed.
Yes. PX can support customer inspection or approval requirements where they are agreed in advance.
This may include document review, Factory Acceptance Testing, photographs, serial number confirmation, rating plate checks, conformity documentation or agreed test evidence.
Any inspection requirements should be raised early so they can be included in the project schedule and commercial scope.
Yes. PX Electronics can ship products to customers outside the UK.
The shipping method will depend on the product size, weight, destination and urgency. Smaller items may be shipped by courier, while larger Static Frequency Converters, AC power systems and ground power units may require pallet freight, air freight or sea freight.
Export packing, documentation and delivery terms should be agreed during the quotation or order stage.
Yes. PX can provide packed dimensions and weights where required.
For standard products, estimated dimensions may be available during the quotation stage. For configured or project-specific systems, final packed dimensions and weights may only be confirmed once the equipment and packing method have been finalised.
This information is especially important when customers are arranging their own freight forwarder, import clearance or onward transport.
PX can provide the usual commercial shipping documents required for dispatch.
Depending on the order and destination, this may include a commercial invoice, packing list, airway bill, courier documentation, bill of lading details, certificate of origin where available, and any agreed project-specific documents.
If your company, freight forwarder or customs broker requires specific wording or documentation, please advise us before shipment.
Yes. PX can work with a customer-appointed freight forwarder where required.
This is common for larger equipment, export shipments or projects where the customer already has a preferred logistics route. PX can provide collection details, packed dimensions, weights and standard shipping documents to support the collection process.
Any specific packing, labelling, booking or collection requirements should be confirmed before dispatch.
PX can provide typical commodity code information for the equipment supplied, where available.
Final import classification remains the responsibility of the importer, freight forwarder or customs broker, as classification can depend on the product configuration, destination country and local customs requirements.
If your customs broker requires technical information to support classification, please let us know and we will assist where possible.
PX Electronics typically accepts payment by bank transfer. Other payment methods may be available depending on the order value, customer location and commercial terms agreed.
Payment terms will be confirmed in the quotation or proforma invoice.
PX Electronics can usually quote and accept payment in GBP or USD, depending on the order and customer location.
The agreed currency will be confirmed on the quotation and invoice. For international bank transfers, please ensure all bank charges are accounted for so the correct invoice amount is received.
Yes. PX can provide a proforma invoice where required.
This is often used for new customers, export orders, advance payment arrangements or where the customer needs to arrange internal approval before payment is made.
The proforma invoice will show the agreed products, pricing, payment details and any relevant commercial terms.
If a product develops a fault, please contact PX Electronics with the product details, serial number if available, a description of the issue, photographs where useful and any alarm messages or operating conditions at the time of the fault.
We will review the information provided and advise the most appropriate next step. This may include technical checks, remote support, return for evaluation, spare parts support or further investigation depending on the product and issue.
Please do not return goods without first contacting PX Electronics.
Yes. PX can support spare parts enquiries for many products supplied by PX Electronics.
Availability will depend on the product type, age, configuration and component supply. For configured systems, it is helpful to provide the serial number, original order reference, photographs of the relevant part and a description of the issue or requirement.
Where a direct replacement is not available, PX will advise on suitable alternatives where possible.
Yes. Remote technical support can be provided where appropriate.
This may include reviewing fault descriptions, alarm messages, photographs, settings, communication data or test results. For some systems, remote support can help identify whether the issue is related to the equipment, load, input supply, installation environment or operating conditions.
The level of remote support available will depend on the product, system configuration and information available from site.
PX can support commissioning requirements where agreed as part of the project scope.
For larger Static Frequency Converters, ground power systems and configured AC power systems, commissioning support may include pre-installation guidance, documentation review, functional checks, customer support during first energisation or site attendance where required.
Commissioning requirements should be discussed at quotation stage so that the correct support can be planned.
Most of our goods are made to order. Bespoke Static Frequency Converters and power systems may have limited return options because they are configured specifically to a customer’s electrical specification.
If goods are faulty, damaged in transit or subject to a warranty claim, please contact us in the first instance with photos and a brief description of the issue. We will review the information provided and advise the most appropriate course of action, including whether the goods need to be returned for evaluation.
Incorrectly shipped goods can be returned at our expense. For full details, please refer to our Terms and Conditions of Sale.
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