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We offer a comprehensive portfolio including resistors, braking units, reactors, power filters, and transformers, with full customization options to meet diverse application requirements.
The Vertical DC Link Reactor is installed in the intermediate DC bus circuit of variable frequency drive systems to improve DC power stability during continuous operation and dynamic load changes.
Unlike horizontal low-profile designs, this configuration focuses on reducing cabinet width through a vertically arranged core and winding structure. The narrow footprint allows multiple drive components to be installed side by side, making it suitable for standard electrical cabinets with limited horizontal space.
Dufew reactors are manufactured with:
- Low-loss cold rolled silicon steel cores
- DC bias-resistant segmented air-gap magnetic structures
- Class F high-temperature insulation systems
- Vacuum impregnation treatment
- Copper or aluminum winding options
The optimized vertical structure provides reliable inductance performance, efficient heat dissipation, and flexible integration into industrial control systems.
Many industrial control cabinets require high-density component installation while maintaining a compact overall width. The vertical configuration reduces horizontal installation space, allows drive units to be arranged more efficiently side by side, and makes better use of available cabinet depth and height. This structure is particularly suitable for VFD cabinets where width is the primary space limitation.
The vertical structure follows the natural airflow direction of many industrial cabinets, supporting a bottom-to-top ventilation path for more efficient heat removal during continuous operation. By reducing local heat accumulation and maintaining thermal stability under rated loads, the design helps ensure consistent electrical performance during long-term operation.
During acceleration, deceleration, or variable-load operation, fluctuations in DC bus current can increase stress on power components. The reactor helps smooth current variation and reduce the impact of ripple current, supporting more stable DC bus operation while helping protect capacitors and inverter components.
The vertical structure is optimized for practical cabinet installation, with a small horizontal mounting footprint, stable air-gap positioning, and a compact terminal arrangement. Reliable mechanical support allows the component to integrate more easily into industrial equipment while reducing constraints on overall cabinet layout.
The vertically positioned magnetic structure reduces the occupied cabinet width while maintaining the required inductance performance. Its narrow installation profile makes efficient use of available cabinet space and is well suited to high-density electrical layouts.
Continuous DC current can create magnetic bias and increase the risk of saturation. Dufew uses a segmented air-gap structure to maintain stable inductance and improve magnetic linearity, helping reduce saturation risk and support reliable continuous DC operation.
Different current ratings require different conductor solutions. Copper and aluminum windings are available, while foil winding can be used for high-current models. The optimized winding structure helps control electrical losses and improve heat dissipation for stable long-term performance.
The terminal layout is designed specifically for vertical cabinet integration, allowing convenient connection with upper busbar systems while reducing the space required for horizontal cable routing. This results in a cleaner wiring arrangement and simplifies installation in compact control panels.
Example: CDL-600-0600-EIDA
| Code | Description |
|---|---|
| CDL | DC Link Reactor Series |
| 600 | Voltage Level (600 = 690VDC) |
| 0600 | Rated Current (0600 = 600A, 2500 = 2500A) |
| EI | Core Structure (EI = Three-phase Core, UI = Single-phase Core) |
| D/W | Installation Structure (D = Vertical, W = Horizontal) |
| A/C | Winding Material (A = Aluminum, C = Copper) |
| Parameter | Specification |
|---|---|
| Product Type | Vertical DC Link Reactor |
| Application | VFD DC Bus Systems |
| Rated Voltage | 220VAC / 380VAC / 690VAC / 1140VAC |
| Rated Current | 5A - 3800A |
| Operating Frequency | 50Hz / 60Hz / Customized up to 500Hz |
| Voltage Drop | 0.5% / 1% / 2% / 4% |
| Overload Capability | 1.5× rated current for 60 seconds |
| Dielectric Strength | 3000VAC / 50Hz / 5mA / 1Min |
| Insulation Resistance | ≥100MΩ (1000VDC) |
| Protection Grade | IP00 / IP20 |
| Insulation Class | Class F (155℃) |
| Temperature Class | T40 |
| Flame Retardant Grade | UL94V-2 |
| Noise Level | ≤65dB |
| Service Life | ≥15 years |
| Standards | IEC289 / GB10229 / JB9644 |
| Application | Main Requirement |
|---|---|
| Standard VFD Control Cabinets | Improve DC bus stability |
| Elevator Drive Systems | Support frequent acceleration cycles |
| Crane and Hoisting Equipment | Maintain reliable power conversion |
| Servo Drive Systems | Reduce ripple impact |
| Industrial Automation Equipment | Optimize cabinet space utilization |
| Injection Molding Machines | Improve drive system reliability |
| Testing Systems | Maintain stable DC power supply |
| Comparison | Vertical DC Link Reactor | Horizontal DC Link Reactor |
|---|---|---|
| Structure | Tall and narrow design | Flat low-profile design |
| Main Advantage | Saves cabinet width | Saves cabinet height |
| Best Installation Condition | Limited width, sufficient height | Limited height, sufficient depth |
| Cooling Method | Vertical airflow path | Horizontal airflow path |
| Terminal Layout | Top connection | Side connection |
| Typical Application | Standard industrial cabinets | Low-height compact cabinets |
It is suitable for electrical cabinets where horizontal space is limited but vertical clearance is available. The narrow structure helps engineers achieve compact internal layouts.
The vertical configuration focuses on reducing cabinet width, while the horizontal configuration is developed for applications with limited cabinet height.
The electrical performance depends on the magnetic design, inductance value, and rated current. The vertical structure mainly improves installation flexibility and cabinet integration.
Yes. Dufew supports customized solutions including electrical parameters, dimensions, mounting structures, and conductor materials according to project requirements.
Dufew Electric specializes in customized power electronics components, including DC Link Reactors, AC Reactors, braking resistors, transformers, and related electrical solutions.
With professional engineering capability and controlled manufacturing processes, Dufew provides reliable reactor solutions for industrial automation, VFD systems, and power conversion applications.
Manufacturing capabilities include:
- Precision core processing
- Winding production
- Air-gap adjustment
- Vacuum impregnation
- Electrical performance testing
Each product is verified through insulation resistance, withstand voltage, inductance, temperature rise, and noise testing.
Dufew maintains continuous improvement in quality management and product standards. The company provides ISO quality management certification, CE certification, product test reports, and technical documents to support global industrial customers.
Dufew uses export-oriented packaging solutions to ensure safe transportation of industrial reactors.
Packaging includes:
- Moisture protection for insulation components
- Reinforced fixing during transportation
- Customized wooden cases for large models
- Product identification and technical documentation
Each reactor is inspected before shipment and supplied with required documents according to customer project requirements.
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No. 364, Kangyang Road, Huangdai Town, Xiangcheng District, Suzhou City, Jiangsu Province, China
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