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Electrodialysis Reversing Rectifier: 20A 18V for EDR Systems
The 20A 18V Electrodialysis Reversing Rectifier is a high-performance, intelligent DC power supply system specifically designed for electrodialysis reversal (EDR) processes. It provides stable, precise, and periodically automatically reversing DC power for core water treatment desalination, material concentration, and separation processes. It is a key piece of equipment for ensuring the efficient operation of EDR systems, preventing membrane fouling, and extending membrane lifespan.
Membrane scaling limits electrodialysis system runtime. Consequently, our Electrodialysis Reversing Rectifier solves this critical issue. Specifically, this 20A 18V unit enables automatic polarity reversal. Therefore, it prevents mineral scale formation on membranes effectively. For a broader overview, see our EDR System Solutions.
This technology extends operational cycles significantly. Essentially, periodic reversal cleans membranes in situ. Meanwhile, the 18V low voltage ensures energy efficiency. Thus, continuous desalination becomes practical and cost-effective.
Technical Specifications of 20A 18V Electrodialysis Reversing Rectifier
Item
Parameter
Input Power
AC Three-phase 380V ±15%, 50/60Hz
Rated Output
DC 0-18V / 0-20A (Adjustable)
Output Power
360W (Maximum)
Control Mode
Constant Current (CC) / Constant Voltage (CV) selectable, automatic switching
Reversing Function
Reversible output, forward and reverse cycle adjustable
Display Accuracy
Voltage/Current ±1% ±1 digit
Voltage Regulation Accuracy
≤ ±1%
Current Regulation Accuracy
≤ ±1%
Ripple Factor
≤ 3%
Working Efficiency
≥ 85%
Communication Interface
RS485/Modbus-RTU (Standard, others optional)
Protection Functions
Overcurrent, overvoltage, overheating, short circuit, phase loss protection
Integrated Professional EDR Functionality 1.1 Automatic Periodic Reversal: Users can freely set the period for automatic switching of current/voltage polarity (usually from several minutes to several hours), achieving true electrodialysis reversal operation, effectively disrupting the polarization layer, and significantly mitigating membrane scaling and fouling. 1.2 Smooth Transition Technology: During polarity switching, soft start/stop and zero-current switching logic are employed to avoid voltage and current spikes that could impact the membrane stack and electrodes, ensuring system safety.
High-Precision Output and Control 2.1 Dual-Mode Control: Supports both constant current (CC) and constant voltage (CV) output modes, with automatic switching, meeting the precise control requirements of the EDR process under different water quality conditions. 2.2 Accurate Display and Setting: The high-definition digital display panel shows output voltage, current, power, operating time, and polarity status in real time. Parameter settings are intuitive, convenient, and highly accurate.
Excellent Stability and Reliability 3.1 High-Efficiency Switching Power Supply Technology: Utilizes advanced IGBT devices and topological circuits, resulting in high conversion efficiency, low heat generation, and energy saving. 3.2 Fully Regulated Voltage and Current Design: Even under power grid fluctuations or load changes, it ensures highly stable output parameters, guaranteeing consistent desalination efficiency. 3.3 Enhanced Protection Design: The robust chassis has good dustproof and corrosion-resistant (optional) capabilities. Key components use industrial-grade standards, ensuring long-term stable operation in humid and dusty industrial environments.
Comprehensive Intelligent Protection and Interfaces 4.1 Multiple Safety Protections: Built-in overcurrent, overvoltage, overheating, short circuit, and phase loss protection functions, with automatic fault alarm and safe shutdown. 4.2 Remote Control Interface: Standard configuration includes an RS485/Modbus-RTU communication interface (or optional 4-20mA analog signal interface), allowing easy connection to a central PLC or DCS system for remote start/stop, parameter setting, and status monitoring, facilitating integration into automated water treatment production lines.
User-Friendly Design and Service 5.1 Friendly Human-Machine Interface: Intuitive buttons and display screen for simple operation and clear status indication. 5.2 Comprehensive After-Sales Support: We provide professional technical consulting, installation guidance, and after-sales service to ensure the stable operation of the equipment throughout its entire lifecycle.
Typical Application Areas
Industrial wastewater desalination and reuse (e.g., coal mining, metallurgy, and chemical wastewater)
Brackish water desalination
Desalination and concentration of materials in the food and pharmaceutical industries (e.g., whey, amino acids, fruit juice)
Separation and purification in chemical processes
Laboratory-scale electrodialysis/EDR systems
Why choose our EDR rectifier?
We specialize in industrial water treatment rectifiers and have a deep understanding of the demanding requirements of the EDR process. This product is not just a rectifier, but the "intelligent heart" of your EDR system. Its precise control, reliable commutation function, and robust design are aimed at maximizing your membrane stack performance, reducing operating and maintenance costs, and improving the overall economic efficiency and reliability of your water treatment system.
