Output: 0-750V DC / 0-200A (Single-pulse Mode)
Power: 150kW
Application: Industrial Plasma Electrolytic Oxidation (PEO/Micro-arc Oxidation)
Best For: Large Aerospace Structures, Automotive Engine Components, Heavy-Duty Industrial Parts, High-Performance Marine Hardware
The 200A 750V unipolar pulse rectifier delivers high-power pulsed DC energy. Specifically, this unipolar pulse system is designed for industrial-scale Plasma Electrolytic Oxidation. Consequently, it generates intense, controlled micro-discharges. These discharges rapidly convert the surface of aluminum, magnesium, and titanium alloys. As a result, they form thick, dense ceramic coatings. Furthermore, this unipolar pulse rectifier significantly enhances wear, corrosion, and thermal properties for demanding applications.
| Parameter | Specification |
|---|---|
| Input Power | 380VAC Three-Phase, 50/60Hz |
| DC Output | 0-750V DC / 0-200A (Single-pulse) |
| Pulse Frequency | 50-3000 Hz Adjustable |
| Pulse Width | 50-1000 µs Adjustable |
| Peak Current Density | Up to 30 A/dm² |
| Control Interface | Industrial IPC with Real-time Plasma Monitoring |
| Special Features | Automatic Energy per Area Control, Coating Uniformity Optimizer, Multi-stage Growth Programming |
| Cooling | Water Cooling |
| Protections | OCP, OVP, Arc Fault Detection, Dielectric Breakdown, Water Flow/Temp/Purity Interlock |
| Single Pulse | ||||||
| No. | Model | Forward Current (A) | Forward Voltage (V) | Input Voltage (V) | Cooling Method | W×L×H (mm) |
| 1 | 5A750V | 5 | 750 | 220 | Air-cooled | 290×520×190 |
| 2 | 10A750V | 10 | 750 | 380 | Air-cooled | 510×560×230 |
| 3 | 20A750V | 20 | 750 | 380 | Air-cooled | 560×760×320 |
| 4 | 30A750V | 30 | 750 | 380 | Air-cooled | 560×760×320 |
| 5 | 50A750V | 50 | 750 | 380 | Air-cooled | 520×580×930 |
| 6 | 100A750V | 100 | 750 | 380 | Air-cooled | 580×650×1650 |
| 7 | 200A750V | 200 | 750 | 380 | Water-cooled | 850×1130×1630 |
| 8 | 300A750V | 300 | 750 | 380 | Water-cooled | 800×1270×1700 |
| 9 | 500A750V | 500 | 750 | 380 | Water-cooled | 800×1270×1900 |
| Dual Pulse | ||||||||
| No. | Model | Forward Current (A) | Forward Voltage (V) | Reverse Current (A) | Reverse Voltage (V) | Input Voltage (V) | Cooling Method | Dimensions (mm) |
| 1 | 10A750V | 10 | 750 | 3 | 300 | 380 | Air-cooled | 510×560×230 |
| 2 | 30A750V | 30 | 750 | 10 | 300 | 380 | Air-cooled | 560×760×320 |
| 3 | 50A750V | 50 | 750 | 15 | 300 | 380 | Air-cooled | 520×580×930 |
| 4 | 100A750V | 100 | 750 | 30 | 300 | 380 | Air-cooled | 580×650×1650 |
| 5 | 200A750V | 200 | 750 | 50 | 300 | 380 | Water-cooled | 850×1130×1630 |
| 6 | 300A750V | 300 | 750 | 100 | 300 | 380 | Water-cooled | 800×1270×1700 |
| 7 | 500A750V | 500 | 750 | 150 | 300 | 380 | Water-cooled | 800×1270×1900 |
Power（KW） = Output Voltage（V） × Output Current（A）
The product comes with a one-year warranty and boasts a service life of over 10 years. It supports both Constant Current and Constant Voltage modes, and it also includes a programmable ramp-up function for current or voltage settings. For time-sensitive applications, you can use the timed operation mode. Moreover, the multi-segment function allows you to vary constant current or voltage levels over time. The device further offers an RS485 communication interface, automatic polarity reversal, and a minute-level timing function. If you need customization, please contact us for further details.
Over all, GAOHUI provides complete single-pulse and dual-pulse models with air-cooled and water-cooled options. Accordingly, these units fit different production scales and process requirements.
Shows the peak voltage of the current pulse, a key parameter affecting coating strength.
Displays the average current over the working cycle to monitor reaction stability.
Set total time: Total process duration.
Total running time: Elapsed working time.
Cumulative ampere-minutes: Total current-time value for coating thickness control.
Multi-station ID for managing different workpiece processes.
Indicates disconnection from remote/host system, local control mode.
Constant current mode, the most common for micro-arc oxidation.
Press to immediately terminate the oxidation process.
Process stage: Current running step in multi-step program.
Ramp-up time: Time for voltage/current to rise to set value, avoiding impact.
Peak voltage limit: Maximum pulse voltage to prevent breakdown.
Frequency (Hz): Pulse working frequency, affects coating density.
Current stage: Current process segment number.
Hold time: Duration of current segment.
Average current setting: Target average current value.
Pulse "on" time percentage in one cycle, affects heat input and coating structure.
Button to start or stop the process.
Toggle between CV and CC control modes.
Pause or resume the ongoing process.
Access multi-step program editor for complex recipes.
Choose between single segment or multi-segment process.
Shows currently loaded/running process recipe.
Opens system configuration menu.
Manufacturer/support contact information.
View historical voltage/current trend graphs.
Visualizes real-time/historical voltage/current curve.
Displays the peak current value of the pulse.
Displays the average voltage over the working cycle.
Shows system date and time.
Shows the peak value of the positive pulse voltage.
Displays the average current of the positive pulse over the working cycle.
Shows the average voltage of the positive pulse over the working cycle.
Displays the peak value of the positive pulse current.
Shows the current running process number.
Sets the time for voltage/current to rise slowly from zero to the set value.
Shows the current running segment number in multi-stage processes.
Sets the duration for the current process segment.
Manufacturer/support contact information.
Shows the average voltage of the negative pulse over the working cycle.
Displays the peak value of the negative pulse current.
Shows the peak value of the negative pulse voltage.
Displays the average current of the negative pulse over the working cycle.
Sets the maximum allowed positive pulse voltage to prevent workpiece breakdown.
Sets the target average current value for the positive pulse.
Set total time: Total process duration.
Total running time: Elapsed working time.
Cumulative ampere-minutes: Total current-time value for coating thickness control.
Opens the system configuration menu.
Accesses the multi-step program editor to create complex recipes.
Selects between running a single segment or a multi-segment process.
Displays the currently loaded or running process recipe.
Temporarily pauses or resumes the ongoing process.
Toggles between constant voltage and constant current control modes.
Multi-station ID for managing different workpiece processes.
Indicates disconnection from the remote/host system, local control mode.
Current operating mode: constant current control.
Press to immediately terminate the oxidation process.
Positive: Pulse frequency, duty cycle, number of pulses.
Negative: Pulse frequency, duty cycle, number of pulses.
Main button to start or stop the entire process.
This industrial-grade unipolar pulse rectifier enables the application of high-performance ceramic coatings. These applications include, for example:
In Aerospace Manufacturing, this unipolar pulse system coats aircraft landing gear components. Additionally, it treats engine pylons and structural brackets. These parts are made from high-strength aluminum or titanium alloys. Importantly, the resulting coating provides exceptional wear resistance. Additionally, it offers thermal insulation. Furthermore, it protects against galvanic corrosion.
For High-Performance Automotive & Racing, this unipolar pulse rectifier treats internal surfaces of aluminum engine blocks. Additionally, it treats pistons and valve bodies. Specifically, it reduces friction. Furthermore, it improves heat dissipation. It also resists cavitation erosion. Additionally, the coating's low thermal conductivity improves engine efficiency.
In Oil & Gas and Heavy Machinery, the unipolar pulse system protects valves, pumps, and hydraulic components. These components are made from lightweight alloys. Specifically, it protects against abrasion. Additionally, it guards against corrosion and chemical attack in harsh environments. Ultimately, this extends component service life. Furthermore, it reduces maintenance frequency and costs.
For Research & Development, scientists utilize this rectifier. Specifically, they investigate PEO mechanisms. Additionally, they develop new coating formulations. Furthermore, they optimize surface properties for emerging applications.
Finally, this rectifier transforms micro-arc oxidation. Specifically, it converts a specialized laboratory process. It becomes a robust industrial manufacturing tool. For this reason, it is the critical power source for any operation. These operations seek to unlock the full potential of lightweight alloys. Thus, it enables advanced, wear-resistant, and multifunctional ceramic surface engineering.
High-Power Industrial Capability: Firstly, the unit delivers 200A at up to 750V. Therefore, this unipolar pulse rectifier enables high-volume production. Additionally, it processes large surface areas efficiently.
Rapid Coating Growth: Secondly, high deposition rates reduce cycle times. Specifically, it makes PEO viable for industrial manufacturing. Thus, this unipolar pulse system improves productivity.
Precision Pulse Control: Moreover, adjustable frequency and width enable coating engineering. Specifically, it controls microstructure and phase composition. Thus, this unipolar pulse rectifier delivers tailored performance.
Water-Cooled Reliability: Finally, the high-capacity cooling system supports long production runs. Specifically, it handles continuous operation. Thus, this unipolar pulse system ensures long-term reliability.
A: Products with the same nominal specifications often serve different industries, and they may carry different detailed parameter requirements. These differences directly affect production costs and technical solutions, so final prices will vary accordingly. For this reason, we recommend you contact us directly to receive a precise and tailored quotation.
A: We assign specialized consultants to support each industry sector. If you need further information, simply reach out to us. After we confirm your request, we will immediately send you the full technical datasheets and product images you need.
A: We focus on custom non-standard industrial power supplies, so we can fully adjust output current and voltage to match your exact needs. The products shown on our website only represent part of our actual range, as we do not list every model online. If you cannot find your desired specifications, please contact us directly. We will work with you to confirm your exact requirements, or we can guide you to select the most suitable parameters based on your industry standards. We will provide complete technical specifications and dimension drawings so you can fully understand the product.
