Modular design — easy to combine, install and maintain; N+1 redundancy supported
With high-frequency transformers for low-voltage/high-current or high-voltage/high-current DC output
Custom air-cooled or water-cooled structures
High power factor and conversion efficiency
Compact and lightweight
Constant voltage, constant current or constant power operation
Full protection: short circuit, overload, overheating, overvoltage, overcurrent
KULUN / DC Power Supply
DCA High-power IGBT DC Power Supply
KULUN DCA: high-power IGBT DC power supply with modular parallel design and N+1 redundancy for electrolysis, electroplating, plasma and heating.
Output Voltage RangeDC 10–600 V
Output Current RangeDC 10–50000 A
Features
Specifications
| Input | Mains supply | Three-phase AC 380 V, 45–65 Hz |
| Control supply | AC 85–265 V, 50/60 Hz | |
| Output | Output voltage | DC 6–400 V, customized |
| Output current | DC 100–50000 A | |
| Performance | Power factor | ≥0.95 (full load) |
| Efficiency | 80–92% (full load) | |
| Key features | Closed-loop mode | Open loop, constant current, constant voltage or constant power, selectable |
| Cooling | Water cooling | |
| Setpoint | DC 0/4–20 mA, DC 0–5 V/10 V, communication | |
| Inputs | 4 analog inputs, 4 digital inputs | |
| Outputs | 2 relay outputs, NO contact, AC 240 V/3 A, DC 24 V/5 A | |
| Communication | Modbus RTU, PROFIBUS, PROFINET | |
| Duty | Continuous duty | |
| Soft start / stop | 0–300 s | |
| Protection | DC bus fault | Protection on DC bus undervoltage or overvoltage |
| Output short circuit | Protection on output short-circuit fault | |
| Overheating | Protection when device temperature > 85 °C | |
| Overcurrent | Protection when output current reaches the set multiple | |
| Load break | Protection when load current falls below the threshold setting |
Typical Applications
Electrolysis, Electroplating & Surface Treatment
Stable DC output for electrolysis, electroplating, pickling and surface treatment; module count configured to bath voltage, current, load fluctuation and control requirements.
Hydrogen, Metallurgy & DC Supply
For hydrogen production, stainless steel electrolysis, metallurgy and DC bus supply in continuous duty. Standard modules in parallel scale with project power; N+1 redundancy available.
Industrial Heating & Plasma Processing
For fast-changing loads such as industrial heating, DC arc and plasma processing; customized by output voltage, current, cooling and control cycle.
FAQ
Which industries and processes suit IGBT DC power supplies?
Electrolysis, electroplating, pickling, surface treatment, hydrogen production, metallurgy, industrial heating, DC supply and plasma processing.
Single-module or multi-module?
Single module for small/medium power and simple structures; multi-module parallel for high power or high availability, easing expansion and maintenance.
What does N+1 redundancy do?
It adds spare modules beyond the rated requirement. If one module fails, the system keeps running or runs derated — capability confirmed per load and redundant capacity.
Are output voltage and current continuously adjustable?
0–100% continuous smooth adjustment per project design; range and control mode confirmed against load, process cycle and grid.
How is current sharing ensured in parallel?
Coordinated module control shares current; sharing error, module count and busbar design are verified together in the project plan.
How to confirm current/voltage stability accuracy?
Set control targets from the process tolerance; final accuracy follows the configuration, load and technical agreement.
How are power factor and efficiency?
IGBT high-frequency switching delivers high power factor and efficiency; actual figures depend on grid, load, module count and operating point — refer to rated-condition tests or the technical agreement.
Air or water cooling?
Air where heat load and environment allow; water for high current, high heat load or continuous duty. Confirm water quality, pressure, temperature and maintenance on site.
What protection is available?
Overvoltage, overcurrent, undervoltage, short circuit, overheating, water temperature/pressure; thresholds and interlocks set per load and safety requirements.
IGBT or SCR DC supply?
IGBT is smaller, lighter and faster in dynamic response — good for modular and redundant needs; SCR suits very high power/current with easy maintenance. Weigh accuracy, ripple, efficiency, environment, budget and maintenance.
Selection Inquiry
Share your industry, load conditions, voltage, current, power range and site environment — our engineers will help you confirm the right configuration.
