PXe-MS Series Marine & Shore Power Static Frequency Converters
PXe-330000-MS Series
Three-phase 50Hz and 60Hz voltage and frequency conversion for vessels, shipyards, dockside power and marine electrical systems.
The PXe-MS Series Marine & Shore Power Static Frequency Converters provide controlled three-phase voltage and frequency conversion for vessels, shipyards, dockside installations and marine electrical equipment operating between different regional power systems.
The range is intended for low-voltage marine applications where the available shore or facility supply does not match the voltage or frequency required by the vessel or connected equipment. Typical duties include converting 380V, 400V or 415V 50Hz supplies to 440V or 480V 60Hz, together with reverse 60Hz to 50Hz conversion for vessels and equipment operating internationally.
PXe-MS systems are configured around the actual shore supply, vessel electrical system, connected load and installation conditions. Ratings from 1kVA to 500kVA are available, with each system selected against the required continuous load and the starting characteristics of connected marine equipment.
Voltage transformation and static frequency conversion can be incorporated within the same system, providing a regulated AC output independent of normal variations in the incoming supply. Transformer isolation can also be included where galvanic separation between shore and vessel systems is required.
Technical Highlights for Marine and Shore Power SFCs
Marine 50Hz and 60Hz Frequency Conversion
The PXe-MS Series provides both 50Hz to 60Hz and 60Hz to 50Hz conversion for vessels and marine equipment operating from shore supplies with a different mains frequency.
Common Marine Voltage Configurations
Systems can be configured around common three-phase marine voltages including 380V, 400V, 415V, 440V and 480V. Voltage and frequency conversion can be carried out simultaneously where the vessel and shore supply differ.
Continuous Static Power Conversion
Solid-state IGBT PWM conversion provides a stable regulated AC output without the mechanical wear, vibration and maintenance associated with rotary frequency converters.
Marine Load and Starting Current Capability
PXe-MS converters are selected against the actual connected load. Motors, pumps, compressors, refrigeration plant and other equipment with significant starting current can be assessed as part of the system sizing process.
Shore, Shipyard and Vessel Applications
The range is suitable for fixed shore installations, shipyards, dry docks, marine workshops, vessel refit projects and onboard applications where the enclosure and installation arrangement are selected for the operating environment.
Product Information
The PXe-MS Series is configured around the incoming supply available at the shore, shipyard or facility and the electrical system required by the vessel or connected marine equipment.
Three-phase input and output arrangements are normally used. Where the incoming and outgoing voltages differ, the complete frequency conversion system can incorporate voltage transformation.
Typical Marine Conversion Duties
| Shore / Source Supply | Vessel / Equipment Supply |
|---|---|
| 380V 3PH 50Hz | 440V 3PH 60Hz |
| 400V 3PH 50Hz | 440V 3PH 60Hz |
| 415V 3PH 50Hz | 440V 3PH 60Hz |
| 400V 3PH 50Hz | 480V 3PH 60Hz |
| 440V 3PH 60Hz | 400V 3PH 50Hz |
| 480V 3PH 60Hz | 400V 3PH 50Hz |
| 480V 3PH 60Hz | 415V 3PH 50Hz |
| 400V 3PH 50Hz | 400V 3PH 60Hz |
Other voltage combinations can be configured where the available shore supply or vessel electrical system differs from these typical arrangements.
Power Rating
PXe-MS Series systems are available from 1kVA to 500kVA.
The required converter capacity should be based on the maximum simultaneous load together with the starting characteristics of connected equipment. Marine systems frequently include motors, compressors, pumps, refrigeration systems and other loads which can draw substantially more current during start-up than during normal operation.
Where a vessel load schedule is available, PX Electronics can review it before recommending the appropriate converter rating.
Input Configuration
The input is configured to suit the available shore, dockside or facility supply.
Typical supplies include:
- 380V 3PH 50Hz
- 400V 3PH 50Hz
- 415V 3PH 50Hz
- 440V 3PH 60Hz
- 480V 3PH 60Hz
Other three-phase input voltages can be considered where required.
Output Configuration
The output voltage and frequency are configured for the vessel or marine equipment being supplied.
Typical outputs include:
- 380V 3PH 50Hz
- 400V 3PH 50Hz
- 415V 3PH 50Hz
- 440V 3PH 60Hz
- 480V 3PH 60Hz
Voltage and frequency conversion can be carried out simultaneously.
Isolation
Transformer isolation can be incorporated within the PXe-MS system to provide galvanic separation between the incoming supply and converted output.
The transformer arrangement can also be used where voltage transformation is required between the shore supply and vessel electrical system.
Installation
PXe-MS converters can be supplied for fixed installation within a shore-power plant room, dockside electrical area, shipyard, marine workshop or suitable vessel machinery space.
Confirm installation conditions when specifying the system. Pay particular attention to ambient temperature, ventilation, humidity, salt-laden air, and the required level of enclosure protection.
Consider higher enclosure protection options where the installation environment requires them.
Order Codes
You can derive a product order code from the main ordering information using the structure below.
The generic PXe-MS Series order code follows the format PXe-330000-MS. The first six digits identify the phase configuration and converter capacity.
For example, a 200kVA marine SFC with a 400V three-phase 50Hz input and 440V three-phase 60Hz output would use the base model:
PXe-330200-MS
The complete order code can then identify the electrical configuration, enclosure and control arrangement:
PXe-330200-MS-[INPUT]-[OUTPUT]-[RATING]-[ENCLOSURE]-[CONTROL]
Example:
PXe-330200-MS-[3P400V50]-[3P440V60]-[200KVA]-[IP54]-[MC]
This would represent:
(PXe-330200-MS) – PX Electronics Marine & Shore Power Static Frequency Converter, 200kVA
(3P400V50) – 3 phase, 400V, 50Hz input
(3P440V60) – 3 phase, 440V, 60Hz output
(200KVA) – 200kVA rated capacity
(IP54) – IP54 enclosure
(MC) – Manual Control
For this configuration, the complete part number would therefore be:
PXe-330200-MS-3P400V50-3P440V60-200KVA-IP54-MC
| Model | Input | Output | Capacity | Enclosure | Interface |
|---|---|---|---|---|---|
| PXe-330200-MS Marine & Shore Power Static Frequency Converter |
3P400V50 3P = Three Phase 400V = Input Voltage 50 = 50Hz |
3P440V60 3P = Three Phase 440V = Output Voltage 60 = 60Hz |
200KVA 200kVA capacity |
IP54 Higher-protection enclosure for suitable marine and dockside installations |
MC Manual Control Interface |
Alternative input and output voltages, neutral arrangements and enclosure specifications can be incorporated into the order code according to the application.
Additional Available Options
IP54-Rated Enclosure
Higher-protection enclosure option for marine, shipyard and dockside installations where additional resistance to dust and water ingress is required. Confirm the actual installation environment before selection.
Conformal Coating
Additional coating of internal PCBs and selected electronic components can be specified for installations exposed to increased humidity or potentially corrosive atmospheres.
Alternative Marine Voltage Configurations
Input and output voltages can be configured around the available shore supply and vessel electrical system. Common arrangements include 380V, 400V, and 415V 50Hz conversion to 440V or 480V 60Hz, along with reverse 60Hz-to-50Hz conversion.
Neutral and Wiring Configuration
Three-phase three-wire or three-phase four-wire arrangements can be provided based on shore supply and vessel distribution requirements. Identify neutral and earthing requirements when specifying the system.
Input and Output Connections
Systems can be supplied with hard-wired terminals, industrial connectors or customer-specified connection arrangements. Application-specific input and output cable assemblies can also be provided.
Remote Control and Communications
Remote operating interfaces and communications can be incorporated where the converter needs to integrate with a vessel, shore-power control system or wider facility monitoring arrangement.
External Transformer Options
Where the project requires a specific transformer arrangement, an external transformer can be supplied instead of, or in addition to, the configured internal transformer arrangement following application review.
Factory Acceptance Testing
Application-specific FAT can be provided where additional electrical testing, load testing or project documentation is required.
Third-Party Witness Testing
Customer or independent third-party witnessed factory testing can be arranged where required.
Commissioning Support
We can provide commissioning and technical support for larger PXe-MS Series installations when site integration or operating checks are required.
| Specification | PXe-MS Series |
|---|---|
| Rated Capacity | 1kVA to 500kVA |
| Input Phase | Three phase |
| Output Phase | Three phase |
| Typical Input Voltages | 380V, 400V, 415V, 440V, 480V AC |
| Typical Output Voltages | 380V, 400V, 415V, 440V, 480V AC |
| Input Frequency | 50Hz or 60Hz according to configuration |
| Output Frequency | 50Hz or 60Hz according to configuration |
| Frequency Conversion | 50Hz to 60Hz or 60Hz to 50Hz |
| Voltage Conversion | Input and output voltage configured according to the application |
| Voltage Accuracy | ≤ ±1% FS |
| Frequency Accuracy | ≤ ±0.1% FS |
| Output Waveform | Pure sine wave |
| Total Harmonic Distortion | ≤3% at linear load |
| Load Current Crest Factor Capability | 3:1 |
| Input Power Factor | ≥0.8 standard configuration |
| Overload Capacity | 100% continuous with short-duration overload capability according to converter rating and configuration |
| Conversion Technology | Solid-state IGBT PWM static frequency conversion |
| Isolation | Transformer isolation incorporated according to system configuration |
| Monitoring | Digital voltage, current and frequency indication with additional electrical monitoring according to selected controller |
| Protection | Overcurrent, overload, overvoltage, overtemperature and short-circuit protection with alarms and status indication |
| Cooling | Forced-air cooling |
| Operating Temperature | -10°C to 55°C |
| Recommended Ambient Temperature | -10°C to 45°C |
| Humidity | 10% to 90% RH, non-condensing |
| Altitude | Up to 1800 metres without additional derating unless otherwise specified |
| Connections | Hard-wired terminals, industrial connectors or application-specific connection arrangements |
| Enclosure | Industrial enclosure according to power rating and installation requirements |
| Enclosure Options | Alternative enclosure protection levels available according to installation environment |
| Factory Testing | Functional factory testing as standard |
| Optional Testing | Application-specific FAT and third-party witnessed testing available |
Yes, subject to the intended installation environment being reviewed. Ambient temperature, ventilation, humidity, salt-laden air and the required enclosure protection should all be considered when specifying an onboard system.
Yes. Both are typical configurations. The required voltage transformation and 50Hz to 60Hz conversion can be incorporated within the PXe-MS system.
Yes, as long as the converter is correctly sized. Motor-driven equipment can draw much more current during startup than during normal operation, so provide starting-current information whenever possible.
Yes. Functional factory testing is provided as standard. Application-specific FAT, third-party witnessed testing and commissioning support can also be provided where required for larger or more complex systems.
Yes. Configurations such as 440V or 480V 60Hz input to 400V or 415V 50Hz output can be supplied for vessels or equipment requiring 50Hz power.
Yes. Voltage transformation and frequency conversion can be incorporated within the same system. A common example is converting a 400V 50Hz shore supply to 440V 60Hz for a vessel electrical syste
Yes. 380V three-phase 50Hz to 440V three-phase 60Hz is a typical marine conversion duty. The converter rating is selected according to the connected vessel or equipment load.
Transformer isolation can be incorporated within the system where galvanic separation is required between the incoming shore supply and the converted vessel supply.
The rating should be based on the maximum simultaneous continuous load together with the starting requirements of the connected equipment. Where several motors or high-inrush loads are involved, PX Electronics can review the vessel load schedule before recommending a converter.
The range is primarily intended for low-voltage marine and shore-power frequency conversion. Assess large port shore-to-ship installations involving multi-megawatt capacities, medium-voltage distribution, synchronisation, and specialist connection infrastructure separately.
Yes, subject to the vessel load, available shore supply and installation environment being reviewed. The system can provide the voltage and frequency conversion required when a vessel is connected to different regional shore supplies.
A marine static frequency converter converts an incoming AC supply to the voltage and frequency required by a vessel or item of marine equipment. It is commonly used where the available shore supply is 50Hz but the vessel operates at 60Hz, or where a 60Hz supply needs to power 50Hz equipment.
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