Heavy Duty DC Plating Rectifier (12V 300A) for Precious Metal Finishing

GAOHUI Premium Industrial High-Frequency IGBT Rectifier Power Supply.

Demanding metal recovery and high-karat plating requires a power source that delivers absolute stability and zero ripple. You are dealing with material costs that demand precision. This 12V 300A rectifier is engineered specifically for the rigorous chemical loads of gold, rhodium, and high-purity nickel baths. It utilizes a true IGBT switching architecture, ensuring you get the rock-solid deposition required to avoid burned deposits or inconsistent surface quality. Whether you are operating a large-volume tank or a dedicated line for high-value work, this unit provides the industrial reliability your process demands.
Key Features & Engineering Highlights
This is not a hobbyist converter. It is built for continuous duty inside an industrial high frequency rectifier factory setting, where uptime defines profitability. The core technology employs a fully sealed, water-cooled IGBT module, allowing for extreme power density in a compact chassis.
Regulation is superior to traditional SCR units. You get a steady DC output with less than 3% ripple at full load. This is critical when performing delicate rhodium plating tank work, as even minor fluctuations can lead to stress cracking or poor adhesion. The high-frequency switching topology also delivers a power factor greater than 0.92, significantly reducing your energy waste compared to older transformer-based systems.
When you are evaluating a heavy-duty DC power supply price, you must consider total cost of ownership. This unit offers >90% total efficiency, meaning less heat rejection into your facility and lower monthly electricity bills. The circuit boards are triple-coated with conformal silicone to resist the acidic vapors common in precious metal shops.
Technical Specifications

Model Number GGR-12V300A
Input Voltage (AC) 380VAC ± 15%, 3 Phase (50/60Hz)
Output Voltage Range (DC) 0 – 12 Volts (Continuously Adjustable)
Output Current Range (DC) 0 – 300 Amperes (Continuously Adjustable)
Cooling Method Water Cooling (Closed Loop / External Chiller Required)
Output Ripple (RMS) Less than 3% at Rated Output
Control Interface Analog (0-10V/4-20mA) & Digital (RS485 Modbus RTU)
Operating Enclosure IP54 (Dust & Splash Resistant)

Advanced Built-in Protection Systems
Your rectifier is the heart of the tank. If it fails, the entire production line stops. This unit is protected by a suite of automatic safety circuits that operate faster than any manual intervention. The system includes short-circuit proof output, instantaneous over-current limiting, and a dedicated over-temperature shutdown for the heat sink. Should the incoming power phase drop out, the unit automatically locks out to prevent single-phasing damage to the transformer. This robust architecture is the hallmark of a trusted IGBT rectifier manufacturer.
Target Industrial Applications
While versatile enough for a laboratory precision rectifier environment, this 12V 300A unit is optimized for high-throughput production. It excels in continuous plating lines and barrel plating operations where maintaining a specific deposit thickness is mandatory.

Gold Line Plating Selective or full-flood jet plating for connectors and wires.
Rhodium Hardening Maintains tight voltage tolerance for high-mirror finish decorative work.
Silver Strike & Flash Pulse-capable for increased adhesion on stainless steel surfaces.
Nickel Barrel Plating High current density handling for batch processes.

Customization and Tailored Engineering Services
We understand that off-the-shelf specs rarely match your precise tank chemistry or rack geometry. As a factory offering custom current voltage rectifier solutions, we can modify the core design to fit your exact line specs. The base unit accepts a wide input range, but we can wind the high-frequency transformer for any output from 1V up to 1000V, and any current from 1A to 100,000A.
Beyond power adjustment, we integrate advanced process control modules. Add a Multi-Stage Profile Control to program ramp-up, soak, and idle sequences. Install an Ampere-Minute Integrator to automatically shut off the rectifier when the plating charge is exactly met, eliminating waste. For complex work, the Automatic Reverse Polarity (ARP) function enhances deposit leveling.
Our communication suite is fully extensible. Standard interfaces include RS485 Modbus RTU and Ethernet IP for factory SCADA integration. Analog users can leverage the 4-20mA remote control loop. For advanced metallurgy, we install Pulse Functions (1-3000Hz) to fine-tune grain structure and porosity. Contact our engineering team to discuss your custom current voltage rectifier requirements today.

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