English
We offer a comprehensive portfolio including resistors, braking units, reactors, power filters, and transformers, with full customization options to meet diverse application requirements.
Dufew Electric Braking Resistor Cabinet is a complete energy dissipation solution designed for applications where motors frequently generate regenerative energy during braking operations.
During deceleration, lifting, lowering, or rapid load changes, excessive energy may increase the DC bus voltage of frequency converters. It absorbs this regenerated energy and converts it into heat, helping maintain stable inverter operation and improving system safety.
The cabinet integrates multiple wire wound corrugated resistor elements through stainless steel conductive bars, while copper busbars are used between resistor layers to ensure reliable high-current connections.
With a power range of 20KW-500KW, operating voltage up to 3000V, and customizable resistance values from 0.01Ω to 1KΩ, Dufew Electric designs braking resistor cabinets according to specific motor power, braking duty cycle, installation environment, and system requirements.
| Parameter | Specification |
|---|---|
| Product Type | Braking Resistor Cabinet |
| Rated Power | 20KW-500KW |
| Working Voltage | ≤3000V |
| Resistance Range | 0.01Ω-1KΩ |
| Resistance Accuracy | ±3%, ±5%, ±10% |
| Protection Grade | IP20-IP54 Optional |
| Temperature Coefficient | ≤300 ppm/℃ |
| Flame Retardant Grade | UL94V-2 |
| Manufacturing Standard | GB-5792 |
CRC 100KW 2.7R J
| Code | Description |
|---|---|
| CRC | Braking Resistor Cabinet |
| 100KW | Rated Power |
| 2.7R | Rated Resistance |
| J | Resistance Accuracy (K=±10%, J=±5%, H=±3%) |
Unlike conventional resistor boxes mainly used for simple load applications, Dufew Electric Braking Resistor Cabinet is designed for industrial drive systems that require reliable energy absorption, DC bus voltage control, and braking protection.
During motor braking, regenerative energy is transferred to the resistor cabinet and converted into heat, helping control DC bus voltage rise and reduce the risk of frequency converter overvoltage faults.
This design improves inverter protection performance and supports more stable operation of industrial drive systems under frequent braking conditions.
Dufew Electric adopts a modular layered structure to simplify installation, maintenance, and future system expansion.
Each independent resistor layer includes a dedicated conductive circuit, temperature monitoring system, and separate airflow path, allowing individual sections to be inspected or maintained without affecting the operation of other layers.
The modular design also supports additional resistor layers, customized resistance configurations, and different braking duty cycles according to specific power requirements, helping reduce replacement costs when equipment capacity increases.
The Braking Resistor Cabinet integrates multiple protection features to improve safety and reliability in industrial operating environments.
Built-in temperature switches continuously monitor cabinet operating conditions. When the temperature exceeds the preset limit, the protection signal is activated and the inverter control system can receive a shutdown command to reduce the risk of equipment damage.
The internal structure uses stainless steel conductive bars for resistor connections and copper busbars between resistor layers, providing strong mechanical support, corrosion resistance, and reliable electrical conductivity during long-term operation.
For applications involving frequent braking cycles, effective thermal management is essential to maintain stable resistor performance.
Dufew Electric provides optimized cooling designs, including vertical airflow channels, improved cabinet ventilation, optional forced cooling fans, and customized protection levels from IP20 to IP54.
The cooling system helps control resistor temperature and maintain reliable operation during continuous industrial braking processes.
Dufew Electric Braking Resistor Cabinet is widely used in industrial systems that require controlled regenerative energy absorption and reliable dynamic braking performance.
Applications include port cranes, tower cranes, and hoisting systems, where the resistor cabinet helps manage regenerative energy generated during lifting and lowering operations.
In rolling mill drives, mining equipment, and conveyor systems, it supports frequent acceleration and deceleration processes by providing stable braking energy dissipation.
The system can be applied in wind turbine pitch drive systems to control braking energy during adjustment operations and emergency shutdown conditions.
For industrial motor test benches and power equipment testing systems, the cabinet provides a controlled resistive load solution for performance verification and reliability testing.
Before shipment, Dufew Electric performs product inspections according to customer requirements.
Testing items include:
| Test Item | Purpose |
|---|---|
| Dielectric Strength Test | Verify insulation safety |
| Insulation Resistance Test | Confirm electrical insulation performance |
| Overload Test | Evaluate short-time overload capability |
| Temperature Performance Test | Verify thermal stability |
| Continuous Load Test | Check long-term operating reliability |
| Mechanical Inspection | Confirm structural stability |
Dufew Electric combines professional electrical engineering experience with standardized manufacturing processes to develop customized braking resistor solutions for industrial drive systems. Covering resistor assembly, cabinet manufacturing, electrical testing, and final inspection, the complete production process is controlled to ensure stable performance, consistent quality, and reliable operation in demanding industrial environments.
Dufew Electric manages key production stages from resistor element assembly to complete cabinet integration. The resistor modules are manufactured according to required resistance values, power ratings, and operating conditions, while cabinet structures are customized based on installation space, cooling requirements, protection levels, and system connection methods.
The manufacturing process includes precision resistor assembly, conductive component installation, internal wiring arrangement, cooling structure integration, and cabinet fabrication. Through integrated production management, Dufew Electric improves product consistency and ensures each braking resistor solution meets the technical requirements of different industrial applications.
Before shipment, each finished product undergoes comprehensive electrical and mechanical inspection, including resistance measurement, electrical connection verification, insulation testing, dielectric strength testing, and specification confirmation. These inspection procedures help ensure the delivered equipment meets agreed project requirements and maintains reliable performance during operation.
Recommended production images:
Factory Production Workshop
- Resistor assembly line
- Cabinet fabrication area
- Electrical testing equipment
Electrical Testing Process
- Voltage testing
- Resistance measurement
- Final inspection
These manufacturing records demonstrate Dufew Electric's engineering capability, production control standards, and experience in supplying customized industrial resistor solutions.
Dufew Electric follows structured quality management procedures throughout material selection, production processing, assembly, and final inspection to maintain stable product performance. According to project requirements, customers can receive corresponding technical documents and quality records for verification before installation and commissioning.
Available documents include:
- Product specification sheets
- Electrical test reports
- Inspection records
- Material compliance documents
- Shipment inspection reports
As industrial electrical equipment, braking resistor cabinets require reliable protection during transportation. Dufew Electric provides professional packaging solutions including export-standard wooden cases, moisture protection treatment, internal fixing structures, and product identification labels to reduce transportation risks during international delivery.
Before shipment, engineers confirm important delivery details such as cabinet dimensions, product weight, lifting requirements, electrical interfaces, and installation conditions to ensure smooth unloading, installation, and commissioning at the customer site.
Transportation methods can be arranged according to project requirements:
Suitable for international industrial projects and large equipment transportation requiring stable long-distance delivery.
Suitable for factory-to-site delivery and regional industrial projects with flexible logistics requirements.
Available for selected cross-border industrial shipments where alternative transportation solutions are required.
Recommended shipment images:
- Finished product warehouse
- Wooden case packaging
- Forklift loading
- Container shipment
Dufew Electric focuses on power electronics components and industrial energy management solutions, providing braking resistor products designed for applications requiring stable energy dissipation, reliable protection, and continuous operation under demanding working conditions.
Every industrial braking system has different electrical and installation requirements. Dufew Electric provides customized solutions covering resistance value, power rating, cabinet structure, cooling design, protection level, and connection configuration to help customers achieve suitable system integration.
From component selection and resistor assembly to cabinet integration and final testing, Dufew Electric maintains strict process control to improve product reliability, manufacturing consistency, and delivery quality for different industrial projects.
Dufew Electric supports OEM customers, distributors, and industrial users with engineering communication, technical documentation, customized manufacturing, quality verification, and international delivery services to support projects from initial evaluation to final installation.
A braking resistor cabinet absorbs regenerative energy generated during motor braking and converts it into heat energy, helping prevent frequency converters from DC bus overvoltage and maintaining stable system operation.
Dufew Electric evaluates motor parameters, braking frequency, duty cycle, installation conditions, and thermal requirements to select suitable resistance values, power ratings, cabinet structures, and cooling methods.
Yes. The solution can be configured according to different inverter brands, voltage levels, braking requirements, and application conditions.
The design can integrate temperature monitoring, over-temperature protection switches, ventilation systems, and customized protection levels to improve operational safety and reliability.
It is commonly used in cranes, elevators, mining equipment, rolling mills, wind power systems, industrial drive systems, and testing equipment where frequent braking or energy absorption is required.
Dufew Electric follows controlled manufacturing procedures and performs electrical testing, insulation inspection, performance verification, and final quality checks before shipment.
Yes. The modular structure supports customized resistor configurations and future capacity adjustments according to changing system requirements.
Address
No. 364, Kangyang Road, Huangdai Town, Xiangcheng District, Suzhou City, Jiangsu Province, China
Tel
