Cooperation History: From Initial Trial to Deep Trust

• March 2025 — First Purchase
• January 2026 — Second Repeat Purchase

Customer Visit to China Factory

The customer arranged a team to visit our production base in China for on-site inspection and in-depth tour:

• IGBT Power Module Aging Test Workshop
• High-Frequency Transformer Winding and Nanocrystalline Core Assembly Line
• 72-Hour Full-Load Aging Test Area
• Tin Plating Application Simulation Test Laboratory

8000A 36V Air-Cooled Rectifier Technical Highlights

1. IGBT High-Frequency Switching Technology, Significant Energy Savings

Utilizing imported high-power IGBT modules as the main power devices, coupled with ultra-microcrystalline (nanocrystalline) soft magnetic alloy transformer cores, the overall efficiency is ≥90%, saving 15%-30% of electricity compared to traditional thyristor rectifiers. For high-power equipment at the 8000A level, long-term operation can save customers considerable electricity costs.

2. Intelligent Air-Cooling System, Adaptable to Southeast Asian Climate

Targeting the high-temperature, high-humidity, and salt-spray industrial environments of Vietnam and Southeast Asia, this machine adopts:

• Temperature-controlled intelligent fan: Automatically adjusts fan speed based on internal temperature, reducing energy consumption and noise.
• Anti-salt-spray acidification treatment: Circuit board conformal coating + anti-corrosion sheet metal casing.
• Independent air duct design: Ensures uniform heat dissipation for IGBT modules and transformers, supporting full-load operation at 45℃ ambient temperature.

3. Dual Closed-Loop Control, Guaranteed Plating Quality

The main control system adopts multi-loop control technology to achieve:

• One-button switching between constant current and constant voltage modes
• Output fluctuation <1% during load changes
• Stable current density during tin plating, avoiding “burning” or “dendritic” deposition defects.

4. Fully Digital Display and Intelligent Communication

• Real-time display of voltage, current, power, and running time.
• Supports RS485/Modbus protocols, allowing integration with customer’s central PLC system.

Frequently Asked Questions

Q1: What plating types is the 8000A 36V air-cooled rectifier suitable for?
A: This rectifier specification is mainly used in tin plating production lines, and is also suitable for electroplating processes such as nickel, copper, zinc, and chromium plating, as well as surface treatments such as anodizing and electropolishing.

Q2: Can the air-cooled rectifier operate stably in the high-temperature environment of Vietnam?
A: Yes. Our air-cooled rectifiers are designed for ambient temperatures ranging from -20℃ to +45℃, with a protection rating of IP54. The entire unit undergoes anti-salt spray and anti-acidification treatment, making it fully adaptable to the humid and hot industrial environment of Vietnam and Southeast Asia.

Q3: How much energy does the 8000A36V air-cooled rectifier save?
A: Utilizing IGBT high-frequency switching technology, the overall efficiency is ≥90%, saving 15%-30% of electricity compared to traditional thyristor rectifiers. Taking an 8000A36V (288kW) unit as an example, based on 20 hours of operation per day, the annual electricity cost savings can reach tens of thousands of yuan.

Q4: Does the rectifier support remote monitoring and PLC linkage?
A: Yes. Equipped with a standard RS485 communication interface, compatible with Modbus protocol, it can seamlessly connect to the customer’s PLC control system to achieve remote start/stop, parameter adjustment, fault alarm, and data acquisition.

Q5: How long does it take from order placement to delivery to Vietnam?
A: The production cycle for a standard 8000A36V air-cooled rectifier is approximately 15-20 working days. Shipping to major Vietnamese ports (Ho Chi Minh City/Haiphong) takes approximately 7-10 days, with an overall delivery cycle of approximately 25-35 days.

Q6: How does the ripple coefficient of a tin-plated rectifier affect the plating quality?
A: The lower the ripple coefficient, the purer the DC output, and the denser, brighter, and less porous the plating. Our high-frequency rectifiers have a ripple coefficient ≤1%, far exceeding industry standards, significantly improving the corrosion resistance and solderability of the tin plating layer.

Get a Quote or Technical Consultation

If you are looking for rectifiers or need customized electroplating power supplies, please contact us for detailed technical solutions and quotations.

⚡ Liyuan Haina Rectifier

Professional Manufacturer of IGBT and SCR Rectifiers

Our products are mainly used in electroplating, electrolysis, electrochemistry, anodizing, electrophoresis, smelting, surface treatment, photovoltaics, energy storage, hydrogen energy, and other applications. They are also widely used in industries such as hydrogen electrolysis, copper refining, copper electrowinning, electrolytic copper foil, and related industries.

📧 CONTACT US

The post A Vietnamese customer has repurchased 8000A 36V air-cooled rectifiers appeared first on Premium Hydrogen Electrolysis and Copper Refining Rectifiers Made in China.

The high-efficiency KES-10KA140V copper refining and electrolysis rectifier employs SCR-driven regulation, enabling users to adjust output levels in response to changing production needs typical in copper electrolysis rectifier applications. Its non-co-phase inverse-parallel configuration provides protection, reduces the likelihood of unexpected outages, and facilitates easier routine upkeep. The device ensures stable current delivery via backup circuits and managed soft-start/soft-stop processes that protect the machinery during operational shifts. Additional features—such as independent on/off channels, automatic fault detection, and a dual-channel hot-swap configuration—help maintain continuous operation even under heavy workloads. With its clear, operator-friendly interface, the unit makes monitoring and adjustment straightforward while supporting high and consistent electrolysis rectifier efficiency required in modern copper refining operations.

The post High Efficiency Copper Refining and Electrolysis Rectifier for Projects in Cyprus appeared first on Premium Hydrogen Electrolysis and Copper Refining Rectifiers Made in China.

Copper refining rectifiers are essential, for delivering the DC current needed in electrolytic refining baths. Inside the bath impure copper plates function as the anode whereas pure copper sheets act as the cathode. The electrolyte, composed of sulfuric acid and copper sulfate facilitates the movement of copper ions. Upon application of DC power copper slowly dissolves from the anode. Accumulates on the cathode creating a layer of high purity. Because unrefined copper from smelting includes components like gold, silver, iron, nickel and sulfur maintaining consistent electrical conditions is crucial to prevent impurities, in the finished deposit during copper refining.

The TDSB-12KA 30V copper refining rectifier utilizes SCR technology to deliver current regulation enabling operators to adjust the process to meet production requirements. The cabinet’s non-co-phase inverse-parallel configuration enhances safety lowers the likelihood of malfunction and eases maintenance. The system ensures stable current provides redundancy in essential circuits and incorporates soft-start and soft-stop functions. Extra features like on/off switching, automatic error identification and a dual-channel hot-swappable setup ensure dependable long-term uninterrupted performance. The user-friendly interface enables operators to oversee and modify the system, maintaining high electrolysis rectifier efficiency.

The post 12KA 30V Copper Refining Rectifier Ensures Stable DC Output in Egyptian Electrolysis Project appeared first on Premium Hydrogen Electrolysis and Copper Refining Rectifiers Made in China.

After three days of technical exchanges, the two parties finalized the solution and signed the purchase contract. The customers expressed satisfaction with our advanced technology and rich experience. Notably, we have become their first ​hydrogen electrolysis rectifier​ supplier in China.

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Onsite, our engineers did the heavy lifting: setting up the equipment, fixing technical problems as they came up (like tweaking settings to stabilize current), and running checks to confirm everything works as it should. They worked directly with the customer, adjusting parameters and walking their team through operation steps to avoid any hiccups.

The system is now fully operational, providing a solid solution for their refining process.

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Inside the copper refining tank, crude copper works as the anode and sheets of pure copper are the cathode. A blend of sulfuric acid and copper sulfate serves as the electrolyte. As soon as direct current is turned on, copper dissolves from the anode and is deposited on the cathode surface as refined copper.This step in copper refining necessitates exacting management of electrical conditions to promote efficient deposition and suppress impurities.

Our copper refining rectifier employs thyristor (SCR) technology to provide this vital control, allowing operators to accurately tailor output to process needs. Modern protection features ensure safe and reliable operation under industrial conditions, making it a dependable choice for copper refining applications.

One customer focused on copper recycling in Egypt has put our 13KA8V copper refining rectifier to use in their copper refining workflow. They reported excellent results, highlighting the system’s reliability in providing consistent DC power, which was crucial for copper refining process stability.

The precise control capabilities allowed them to continuously maintain ideal electrochemical conditions, leading to gains in both production volume and metal purity in their copper refining workflow. They also valued the equipment’s operational simplicity and reduced maintenance, citing tangible benefits to their bottom line.

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According to the customer’s requirements, they needed a rectifier for water-electrolytic hydrogen production equipment. A common water electrolysis process involves filling a stack of catalytic cells with electrolytic water and extracting hydrogen through an electrical chemical reaction. The catalysts are connected to a power source to decompose water into oxygen and hydrogen gas and are typically made from expensive metals such as platinum or iridium.

The TB series synchronous rectifier power supply, independently developed by Liyuan, offers high energy efficiency and stable output performance. It is built using the latest generation of energy-saving high-frequency MOSFET switching power supply technology, including synchronous rectifier MOSFETs imported from the United States. Its voltage drop is only 0.1V, 0.6V lower than ordinary second-generation high-frequency switching power diodes (0.7V). With a high-current parallel structure and patented transformer design, efficiency can reach 94% or more.
This type of power supply has been applied in many large projects both domestically and internationally over the years. Its energy-saving performance is obvious, and it operates reliably and stably. The equipment has been well received by numerous users.

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When our Indian customer – a leading industrial hydrogen supplier – approached us about their expansion plans, they had one non-negotiable requirement: find them a rectifier solution that could handle their demanding 24/7 electrolysis operations while keeping energy costs in check. Their existing system was struggling with inconsistent power delivery and surprisingly high operating expenses.

What Made This Project Unique​

The technical team specified an exacting set of parameters:

1. Precise current control: 0-300A range (with fine-tuning capability).

2. Voltage stability: 0-150V output window.

3. Most critically – they needed demonstrable energy savings to justify the investment.

Our Engineered Solution​

After careful analysis, we recommended our latest-generation 300A150V hydrogen electrolysis rectifier – a system we’d been refining specifically for these kinds of industrial applications.

Technical Highlights That Made the Difference:​​

Power Delivery:​​

1.Seamless 0-300A current adjustment.

2.Stable 0-150V output regulation.

Efficiency Innovations:​​

1.Advanced high-frequency MOSFET architecture.

2.Premium US-sourced synchronous rectifier components.

3.Revolutionary 0.1V forward voltage drop (industry standard is 0.7V).

4. Verified 94%+ conversion efficiency.

System Design:​​

1.Robust high-current parallel configuration.

2.Proprietary transformer technology.

3.Industrial-grade reliability features.

The Results They Experienced​

The difference became immediately apparent:

1.Energy Savings: The 0.6V improvement over conventional designs translated to measurable operational cost reductions.

2.Operational Stability: Maintained constant voltage levels even under maximum production loads, preventing the operational halts caused by power instability.

3.Maintenance Benefits: Lowered downtime with easier maintenance access and more reliable components needing less frequent service.

Why This Matters for Hydrogen Production​

In electrolysis applications, power supply consistency directly impacts:

1.Gas purity levels.

2.Electrode lifespan.

3.Overall system efficiency.

Our solution addresses all these factors while delivering the promised energy savings.

The post 300A150V Hydrogen Electrolysis Rectifier High Efficiency Power Supply for Indian Industrial Use appeared first on Premium Hydrogen Electrolysis and Copper Refining Rectifiers Made in China.

After months of collaboration with our Indian partners, the system is now live at a government research facility, quietly powering the electrolyzers that split water into hydrogen. The difference? ​Stable DC power, minimized energy loss, and a big step toward sustainable hydrogen.​​

What’s next? The research team is excited about scaling up, possibly integrating solar power for a truly green hydrogen solution. We’re not just selling equipment—we’re enabling a cleaner energy future, one rectifier at a time.

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