GAOHUI IGBT Rectifier 12V 5000A Copper Electrolysis EW DC Power Supply

Executive Summary
Engineered for the extreme demands of copper electrowinning (EW) and electrorefining (ER), this GAOHUI 12V 5000A IGBT rectifier is not a generic battery charger. It is a heavy-duty DC power supply built to replace lower-efficiency silicon-controlled devices in modern solvent extraction sx-ew plants. By leveraging advanced IGBT switching technology, this industrial high frequency rectifier factory solution achieves over 90% efficiency, slashing your thermal load and operating costs. Designed for true continuous duty at 5000 amperes output, it delivers the precise, stable DC current required for cathode deposition quality.
Part 1 Key Features & Engineering Highlights
IGBT Switching Technology with PWM Control: Unlike thyristor-based units that rely on phase-angle firing, this platform uses high-frequency IGBT switching. This yields a stable DC output with ripple content below 5%, preventing localized burning or nodule formation on the copper cathodes. The closed-loop control system maintains current within +/- 0.5% of setpoint regardless of primary AC fluctuations or varying electrolyte conductivity.
High Efficiency Core: The rectifier transformer operates at a medium frequency, drastically reducing core size and copper losses. Coupled with zero-voltage-switching (ZVS) topology, the entire unit maintains a power factor of 0.95 or better. As a professional IGBT rectifier manufacturer, GAOHUI guarantees a peak conversion efficiency of 92%.
Busbar & Connection Design: Input and output terminals are constructed of tinned copper brazed to the mounting lugs to handle the full 5000 amperes continuous load without overheating. All internal AC and DC busbars are sized at twice the nominal current rating for safety margin.
Part 2 Technical Specifications Table
| Parameter | Specification | Notes |
| — | — | — |
| Input Voltage | 380V / 415V / 480V (3-Phase, 50/60Hz) | Customer specific tap selection |
| Output Voltage | 0-12V (Continuously Adjustable) | Precise 12V rated terminal voltage |
| Output Current | 0-5000A (Continuously Adjustable) | Constant Current / Constant Voltage |
| Ripple / Regulation | Less than 5% (Full Load) | Less than 1% regulation |
| Control Interface | RS485 Modbus RTU / Ethernet IP / 4-20mA | Hardwired remote pot standard |
| Cooling Method | Forced Air or Deionized Water Cooling | Ambient up to 50 deg C |
| Duty Cycle | 100% Continuous | No de-rating required |
| Protection Class | IP21 (Indoor) / IP54 (Optional) | Control cabinet separate |
Part 3 Advanced Built-in Protection Systems
This rectifier incorporates multiple independent protection tiers for safe operation. An internal fast-acting IGBT desaturation circuit and di/dt snubber network protect the power modules against output short circuits or arc flash. The main breaker, located in the primary AC line, offers a separate backup trip. Temperature monitoring points on the heat sink, transformer core, and output busbars trigger an audible alarm and initiate a soft shutdown at 85 degrees Celsius. Ground fault detection with adjustable sensitivity continuously monitors the DC output for electrolyte leakage or insulation breakdown.
Part 4 Target Industrial Applications
Copper Electrolysis: Primary application for copper tubing, wire rod, and cathode starting sheets from an electrowinning cell. The low ripple output significantly reduces copper contamination from anode slime.
Copper Scrap Recycling: Ideal for refining missions or depositing copper from scrap anode blister material.
Solvent Extraction sx-ew: The 12V 5000A power supply matches the typical working voltage window for a standard cell cascade in a medium-scale copper solvent extraction plant.
Custom Electrochemical Processes: Also suitable for gold electrowinning, nickel production, and zinc stripping where adjustable 12V DC current is required.
Part 5 Customization and Tailored Engineering Services
GAOHUI offers factory-level custom engineering for your precise needs. Our production range spans from 1V to 1000V and 1A to 100,000A (Input: AC / Output: DC only). For copper electrolysis operations, we can integrate several high-value modules directly into your unit:
Process Timer & Multi-Stage Profile Control: Set exact ramp-up, plating duration, and constant voltage dwell for each production shift.
Ampere-Minute Integrator: Track total amp-hours or ampere-minutes deposited for process monitoring and chemical dosing synchronization.
Automatic Reverse Polarity (ARP): Periodic current reversal to strip impurities or level the deposit thickness.
Soft-Start and Pulse Functions: Pulse rectification at 1-3000Hz adjustable frequency improves mass transfer on diffusion-limited reactions at the cathode.
Control Interfaces: Add standard RS485 Modbus RTU remote monitoring, Ethernet IP for factory SCADA integration, or analog 4-20mA loop control for automated response to cell voltage changes. Every system includes a dry-contact alarm panel for visual and audio annunciation.
For a detailed custom current voltage rectifier quote for your copper EW plant or a competitive heavy-duty DC power supply price, contact our applications engineering team directly.