The Dual Range MAO Rectifier from Gaohui Rectifier delivers 30A / 15A at 750V / 250V for dual-range micro-arc oxidation. This Dual Range MAO Rectifier powers a wide range of oxidation racks with stable DC or pulsed output. Furthermore, the Dual Range MAO Rectifier uses air cooled IGBT stages that hold tight output stability under full load. Consequently, oxidation shops rely on it for uniform, repeatable coatings. Moreover, surface-finishing facilities select this Dual Range MAO Rectifier for its air cooled design and 30A / 15A 750V / 250V capacity that keeps deposition rates predictable. Consequently, production planners factor it into daily schedules without derating concerns.
Cooling: Air cooled | Application: Dual-Range Micro-Arc Oxidation | Ripple: ≤5% | Interface: RS485/PLC
The 30A / 15A 750V / 250V rectifier is purpose-built for micro-arc oxidation, where the bath voltage climbs into the plasma range of several hundred volts. It grows hard ceramic oxide coatings on aluminum, magnesium and titanium alloys. For example, it coats engine components, aerospace parts and medical implants to over 100 microns. Furthermore, the high-voltage output sustains the micro-arcs that form dense alumina. Moreover, pulsed control refines pore structure and lowers energy use. In addition, the RS485, optional PLC port allows remote monitoring.
Moreover, this rectifier supports ramp-up profiles that prevent spark runaway on fresh parts. In addition, water-cooled cooling keeps output stable through long MAO cycles. Consequently, customers use it for wear-resistant, corrosion-protective ceramic coatings on light alloys. Moreover, operators appreciate the clear controls on this unit. Finally, the Gaohui service team responds quickly to spare-part requests, which keeps the line running.
| Parameter | Value |
|---|---|
| DC Output Current | 0–30A adjustable |
| DC Output Voltage | 0–750V adjustable |
| Cooling Method | Air cooled |
| Ripple Factor | ≤5% RMS |
| Control Mode | IGBT/PWM, CV/CC |
| Communication | RS485, optional PLC |
| Dimensions | Customized to tank layout |
| Weight | Customized |
| Special Feature | Two output ranges |
Specifications subject to change. Custom designs available upon request.
We can provide: 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.
Furthermore, Gaohui Rectifier supports parallel N+1 expansion when line capacity grows. We provide remote commissioning and spare-part support worldwide. Consequently, you can scale from one tank to a full oxidation department without replacing the rectifier.
Moreover, Gaohui Rectifier includes commissioning support and a documented maintenance plan with every Dual Range MAO Rectifier. Consequently, your engineers can schedule service without guessing intervals.
Related Models:
Need more current? Check the 20A 80V Air-Cooled Hard Anodizing Rectifier.
Need lower voltage? View the 30A 750V Air-Cooled Pulse MAO Rectifier.
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.
