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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.
In industrial drive systems, DC Link Reactors are commonly installed in the intermediate DC circuit to reduce current fluctuation caused by rectification and load changes. However, traditional vertical reactor structures may create installation challenges in compact cabinets where vertical space is limited.
Dufew Electric Horizontal DC Link Reactor adopts a flat magnetic structure with horizontally arranged core and winding assembly. This design reduces overall height while maintaining the required inductance performance and thermal capability.
The reactor is manufactured with low-loss cold rolled silicon steel laminations, high-temperature Class F insulation materials, and vacuum impregnation technology. For high-current applications, bobbinless foil winding structures are available to achieve compact dimensions, improved heat dissipation, and stable continuous operation.
Unlike standard vertical reactors, the horizontal configuration focuses on mechanical integration, airflow optimization, and cabinet layout flexibility, making it suitable for modern compact drive equipment.
Many industrial control cabinets have strict height limitations due to multi-layer VFD arrangements, machine-integrated electrical enclosures, mobile power systems, or narrow DC power cabinets. The low-profile configuration reduces overall height while making better use of available cabinet width, allowing easier integration into equipment with restricted installation space. Compared with conventional vertical reactors, this arrangement gives engineers greater flexibility when optimizing cabinet layouts without increasing enclosure height.
Thermal management is critical for DC reactors operating under continuous current. The horizontal ventilation design exposes the windings to airflow across multiple surfaces, while side ventilation helps reduce heat accumulation and the wider heat dissipation area promotes more uniform temperature distribution. IP20 protection covers are designed to maintain effective airflow, supporting stable performance during long-term full-load operation.
Applications such as cranes, mobile equipment, and industrial machinery require reliable mechanical stability. The wider mounting base provides stronger support, while multi-point fixing helps limit displacement during operation. A stable air-gap structure maintains consistent inductance performance, and secure terminal connections help withstand vibration in demanding industrial environments.
The side terminal arrangement simplifies integration into narrow electrical cabinets by reducing vertical wiring obstruction and shortening DC bus routing distances where appropriate. It also allows a cleaner arrangement of positive and negative cables, helping engineers achieve a more compact and organized electrical layout.
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 | Installation Structure (D = Vertical Installation, W = Horizontal Installation) |
| A | Winding Material (A = Aluminum, C = Copper) |
| Parameter | Specification |
|---|---|
| Rated Voltage | 220VAC / 380VAC / 690VAC / 1140VAC |
| Operating Frequency | 50Hz / 60Hz / Up to 500Hz |
| Rated Current | 5A - 3800A |
| Overload Capability | 1.5 times rated current for 60 seconds, interval 1 hour |
| Voltage Drop | 0.5% / 1% / 2% / 4% |
| Dielectric Strength | 3000VAC / 50Hz / 5mA / 1Min |
| Insulation Resistance | ≥100MΩ (1000VDC) |
| Protection Grade | IP00 / IP20 |
| Insulation Class | T40 / Class F (155℃) |
| Flame Retardant Grade | UL94V-2 |
| Noise Level | ≤65dB (Tested at 1 meter horizontal distance from reactor) |
| Service Life | ≥15 years |
| Standards | IEC289:1987 Reactor Standard / GB10229-88 Reactor Standard (Equivalent to IEC289:1987) / JB9644-1999 Reactor for Semiconductor Electrical Drives |
The horizontal core and winding arrangement significantly reduce the overall installation height compared with conventional vertical DC reactors.
This design helps:
- Fit into ultra-thin VFD cabinets with limited vertical clearance
- Support multi-layer cabinet layouts without interfering with upper components
- Improve space utilization in compact electrical enclosures
- Simplify integration into machine-mounted control systems
The flat structure is particularly suitable for narrow and elongated cabinets where height is the primary installation limitation.
Thermal management is critical for DC reactors operating under continuous current load.
The horizontal design improves heat dissipation through:
- Wider winding surfaces exposed to airflow
- Side ventilation channels that reduce heat accumulation
- More uniform temperature distribution during long-term operation
- Compatible IP20 protection design without blocking airflow paths
Compared with vertically stacked structures, the horizontal airflow path helps reduce local hot spots and improves operating stability.
Industrial equipment such as mobile power systems, lifting equipment, and heavy machinery may experience continuous mechanical vibration.
The reactor adopts a reinforced horizontal mounting structure featuring:
- Wider base support for improved mechanical stability
- Multiple fixing points to reduce displacement risk
- Stable air-gap positioning to maintain consistent inductance
- Secure side terminal arrangement to reduce cable stress
This design improves reliability in applications requiring long-term operation under vibration conditions.
Efficient cable arrangement is important in high-density electrical cabinets.
The horizontal configuration provides:
- Side-positioned positive and negative terminals for easier cable routing
- Reduced vertical obstruction inside the cabinet
- Shorter and cleaner DC bus connections
- Improved separation between DC positive and negative wiring paths
The optimized wiring layout helps engineers achieve a cleaner cabinet design while improving installation efficiency and maintenance accessibility.
Horizontal DC Link Reactor is ideal for ultra-thin electrical control cabinets used in machine tools, compact production lines, and integrated automation equipment where vertical installation space is limited but cabinet depth is available.
The low-height structure allows engineers to install the reactor without increasing cabinet dimensions, making it suitable for space-sensitive equipment designs.
In multi-layer VFD cabinet assemblies, each drive section has limited vertical clearance due to stacked component arrangements.
The horizontal structure helps avoid interference with upper and lower equipment layers while maintaining stable DC bus current performance, making it suitable for compact drive cabinets with high component density.
Mobile generator sets, vehicle-mounted power supplies, and portable drive systems often require compact electrical enclosures with strict height limitations.
The flat-profile design enables horizontal installation inside low-clearance housings while maintaining reliable operation under vibration and mobile working conditions.
For electrical rooms or control cabinets arranged in long linear configurations, where cabinet height is restricted but internal depth is available, the horizontal reactor provides a practical installation solution.
Its flat structure allows better utilization of cabinet floor space and simplifies internal component arrangement.
Electroplating and electrolysis equipment commonly uses narrow DC power cabinets where busbar space and installation height are limited.
The horizontal DC Link Reactor can be installed in a flat configuration to stabilize DC current output while adapting to compact rectifier cabinet layouts.
| Comparison | Horizontal DC Link Reactor | Vertical DC Link Reactor |
|---|---|---|
| Structure | Flat core and horizontal winding layout | Vertical stacked core structure |
| Installation Space | Designed for low-height cabinets | Requires greater vertical clearance |
| Cabinet Integration | Suitable for compact and customized layouts | Suitable for conventional cabinets |
| Cooling Method | Horizontal airflow with wider heat dissipation area | Vertical airflow design |
| Wiring Arrangement | Side terminals simplify compact routing | Vertical terminals require additional height |
| Mechanical Stability | Wider base improves vibration resistance | Smaller footprint structure |
Dufew Electric specializes in customized power electronics components, including DC Link Reactors, AC Reactors, braking resistors, transformers, and related electrical solutions.
With experienced engineering teams and controlled manufacturing processes, Dufew provides reliable reactor products for VFD systems, industrial automation, and power conversion applications.
Production capabilities include:
- Precision core processing and winding manufacturing
- DC air-gap structure optimization
- Vacuum impregnation and insulation treatment
- Electrical performance and reliability testing
Each reactor is verified through key inspections such as insulation resistance, withstand voltage, inductance, temperature rise, and noise testing.
Dufew Electric continuously improves its quality management system and product standards. The company provides ISO quality management certification, CE certification, product test reports, and technical documentation to support global customer projects.
Dufew offers OEM manufacturing, customized designs, and engineering support based on specific application requirements.
Dufew Electric applies professional packaging solutions to protect reactor performance during international transportation.
Packaging measures include:
- Moisture-proof and insulation protection
- Reinforced fixing to prevent impact damage
- Export-standard wooden cases for large reactors
- Product labels and technical documents for easy installation
Each unit is inspected before shipment and delivered with required specifications, test reports, and customized packaging solutions.
Dufew supports batch orders, OEM projects, and global delivery requirements.
This design is recommended when the electrical cabinet has limited height but sufficient width or depth. The flat structure helps engineers integrate the unit into compact cabinets while maintaining reliable DC bus performance.
No. Electrical performance mainly depends on inductance design, magnetic structure, current rating, and winding technology. The horizontal configuration mainly improves installation flexibility, cooling efficiency, and cabinet integration.
Yes. Dufew provides customized solutions including rated current, voltage requirements, inductance values, dimensions, mounting method, and winding materials according to customer equipment requirements.
Yes. The reinforced mounting structure and stable air-gap design improve mechanical reliability. It can be applied in industrial equipment exposed to continuous vibration, such as mobile systems, lifting equipment, and heavy-duty machinery.
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