Electrolytic Degreasing – 12V 1500A Heavy-Duty DC Power Supply

This is the specific power conversion engine engineered for the destructive chemistry and high electrical stress of electrolytic oil removal systems. Tailored for continuous duty in alkaline degreasing baths and steel strip degreasing lines, this 18kW unit replaces traditional SCR (silicon-controlled rectifier) systems with the efficiency and precision of insulated-gate bipolar transistor (IGBT) high-frequency technology. If your operation demands a reliable industrial high frequency rectifier factory-built solution that delivers stable 12V DC output at 1500A with zero ripple interference, this machine is the upstream backbone of your surface treatment quality. The digital control interface provides real-time feedback on amperage and voltage, ensuring your electro-cleaning bath maintains the polarization current density required to remove rolling oils and oxides without going blind to process variations.
PART 1 KEY FEATURES AND ENGINEERING HIGHLIGHTS
Precision Ramp-Up Function: The embedded soft-start and ramp-up control gradually increases voltage and current at the start of the cycle. This prevents the initial current surge that can create hot spots and uneven cleaning on sensitive substrate profiles, a critical advantage for continuous steel strip degreasing operations.
Advanced PFC Rectifier Topology: IGBT modules operating at 25kHz switching frequency produce a DC output so pure that the residual AC ripple is minimized. This means the cleaning current penetrates the micro-pores of the cathode reliably, oxidizing only the organic soils instead of the base metal. For production managers, this translates to fewer rejects due to pitting or etching.
Digital Interface and Remote Control: The front panel features an intuitive digital display for both voltage and current readout. The backplane includes a fully isolated RS485 Modbus RTU interface and an optional 4-20mA analog output, allowing direct integration into a PLC-based distributed control system for monitoring your complete surface treatment line.
Compact Air-Cooled Structure: Unlike water-cooled units that require chiller loops and risk condensation, this unit uses aggressive forced-air cooling with a redundant fan system, reducing the total installation cost and footprint. It is plug-and-play with a standard 3-phase AC supply, optimizing reliability in harsh galvanizing plant environments.
PART 2 TECHNICAL SPECIFICATIONS (18kW System)
| Parameter | Specification |
| :— | :— |
| Output Voltage Range | 0-12V DC (Continuous Adjustable) |
| Output Current Range | 0-1500A DC (Continuous Adjustable) |
| Rated Power | 18 kW |
| Input Power Requirement | 380V/400V/480V AC ±15%, 3-Phase, 50/60Hz |
| DC Output Ripple | 90% (Full Load) |
PART 3 ADVANCED BUILT-IN PROTECTION SYSTEMS
Intelligent Overcurrent Limitation: The controller continuously monitors the output current and immediately reduces the power stage drive if a short-circuit occurs through the bath, preventing damage to the bus bars and the rectifier itself. This is separate from a simple breaker; it is an active control loop clamp.
Three-Level Over-Temperature Shutdown: A thermistor monitors the IGBT heatsink temperature. If the airflow is obstructed or the ambient temperature rises above safe limits, the unit first generates an alarm relay, then throttles the current output, and finally performs an automatic soft-power-down if the threshold is exceeded, ensuring the semiconductor modules never experience thermal runaway.
Phase Loss and Input Voltage Guard: The input detection circuit checks for all three supply phases before enabling the main contactor. This prevents single-phasing which can destroy a three-phase IGBT bridge. The system includes input surge suppression to handle transient spikes from arc furnaces or large motor starts within the facility.
Reverse Polarity Interlock: If the DC output terminals are connected incorrectly to the electrolytic cell, the digital controller detects the potential difference and inhibits the power stage from firing, protecting both the rectifier and the work piece from reverse plating reactions.
PART 4 TARGET INDUSTRIAL APPLICATIONS
Electrolytic Degreasing: Removing drawing compounds, rust inhibitors, and particulate contaminants from steel, copper, and aluminum prior to electroplating. The stable voltage ensures the cathodic cleaning mechanism is effective across the entire part rack.
Alkaline Oil Removal: Specifically designed for the high-current requirement of heavy alkaline cleaning solutions where the chemical bath conductivity is high. The 1500A output provides the necessary current density for aggressive saponification instantaneously.
Steel Strip Degreasing: For continuous annealing or galvanizing lines, the high power density means that as the strip passes through the bath at line speed, the DC current evenly removes solid iron fines and residual mineral oils.
Custom Surface Preparation: Suitable for iron phosphating, alkaline derusting, and pre-coating processes where the controlled application of DC current is required to activate the metallic bonding sites.
PART 5 CUSTOMIZATION AND TAILORED ENGINEERING SERVICES
When standard 12V 1500A settings are insufficient, our engineering team reconfigures the internal transformer and control board to match your exact electro-cleaning bath chemistry and production line geometry. We are a dedicated IGBT rectifier manufacturer offering total DC customization across a range of 1V to 1000V and 1A to 100,000A. All input power is standard AC grid voltage (380V-690V 3-phase), and the output is pure regulated DC only.
Add-on Integrated Modules:
Process Timer: Programmable from 1 second to 999 hours per cycle, with automatic cycle completion that ramps down the rectifier to zero and de-energizes the output.
Multi-Stage Profile Control: Define a unique current profile for ramp-up, cleaning hold, rinse pulse, and ramp-down without requiring a separate PLC stack.
Ampere-Minute Integrator: An on-board integrator precisely measures the total charge delivered to the bath (A-min or A-hr), enabling precise chemical consumption calculations for adding cleaning concentrate.
Automatic Reverse Polarity: Program a timed reversal of the DC output voltage to periodically reverse the polarity of the electrodes, preventing anode passivation and removing debris accumulation on the electrode surface.
Soft-Start Function: Linear 0-100% ramp time adjustable from 1 second to 60 seconds.
Remote Interface Protocols: RS485 Modbus RTU, Ethernet TCP/IP, and Standard 4-20mA Analog control interface for seamless integration with SCADA systems.
Pulse Functions: Switch the output between pure DC and adjustable Pulse DC. The pulse frequency is adjustable from 1Hz to 3000Hz, and duty cycle from 10% to 90%, enabling advanced high-ratio pulse cleaning for deep recess geometry.
We are a premium heavy-duty DC power supply price competitive manufacturer that delivers a custom current voltage rectifier built to last 15+ years in continuous 7×24 operation. Every unit is load tested at full rated current and includes a standard 2-year warranty.