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 Corrugated Resistor Cabinet is a floor-mounted high-power resistor assembly designed for applications requiring stable and efficient electrical energy dissipation.
Unlike conventional resistor boxes, the cabinet adopts a modular multi-layer structure, where multiple corrugated resistor units are connected through stainless steel conductive bars and copper busbars. This design improves power expansion capability, heat distribution, maintenance efficiency, and operational reliability.
The resistor cabinet supports:
- Rated power: 20KW-500KW
- Working voltage: ≤3000V
- Resistance range: 0.01Ω-1KΩ
- Custom resistance values and cabinet configurations
- Natural cooling or forced air cooling options
The Corrugated Resistor Cabinet is designed for industrial braking systems that require high-capacity energy absorption and stable operation under demanding working conditions. With power ratings from 20KW to 500KW, it is suitable for medium and high voltage inverter systems, frequent braking cycles, and high-energy discharge applications.
The reinforced copper busbar connection improves current carrying capability while reducing electrical losses during operation, helping maintain reliable performance in heavy-duty environments such as crane lifting systems, port handling equipment, mining machinery, steel production lines, and large motor drive systems.
Dufew Electric adopts a modular multi-layer structure to improve system reliability and simplify maintenance. Each resistor layer is designed with independent electrical connections, dedicated airflow channels, and individual fault isolation capability, allowing technicians to inspect or replace specific sections without affecting the complete system.
The modular design also provides flexible capacity expansion options, enabling the resistor configuration to be adjusted according to different power requirements, braking cycles, and future system upgrades. Compared with traditional resistor boxes, this structure helps reduce maintenance downtime and improve equipment availability.
The corrugated resistor element adopts an optimized winding structure to reduce parasitic inductance and improve dynamic response during high-speed braking operations. This design helps minimize electromagnetic interference, reduce voltage spike impact, and provide more balanced current distribution for inverter-based drive systems.
With improved electrical stability, the low-inductance structure is suitable for variable frequency drives, regenerative braking systems, and high-power motor control applications where fast energy absorption and reliable protection are required.
High-power resistor systems generate considerable heat during energy discharge, making effective thermal management essential for continuous operation. Dufew Electric optimizes cabinet airflow channels and heat dissipation structures to maintain stable temperature performance during long-duration braking cycles.
The cooling system can be configured with natural ventilation, forced air cooling using industrial fans, or customized cooling solutions according to duty cycle and installation conditions. Large ventilation channels, uniform heat distribution, and optional dust protection structures help reduce local overheating risks and improve long-term operating reliability.
The Corrugated Resistor Cabinet mainly consists of:
| Component | Function |
|---|---|
| Corrugated Wire Wound Resistor | Converts electrical energy into heat energy |
| Stainless Steel Conductive Bar | Provides mechanical support and electrical connection |
| Copper Busbar | Ensures high-current transmission |
| Cabinet Enclosure | Provides protection and installation structure |
| Cooling System | Removes heat generated during operation |
| Temperature Protection Device | Prevents overheating damage |
| Parameter | Specification |
|---|---|
| Product Type | Corrugated Resistor Cabinet |
| Rated Power | 20KW-500KW |
| Working Voltage | ≤3000V |
| Resistance Range | 0.01Ω-1KΩ |
| Resistance Accuracy | ±3%, ±5%, ±10% |
| Protection Grade | IP20 / IP23 Optional |
| Temperature Coefficient | ≤300 ppm/℃ |
| Flame Retardant Grade | UL 94V-2 |
| Standard | GB-5792 |
| Cooling Method | Natural Cooling / Forced Air Cooling |
Example: CRC 100KW 2.7R J
| Code | Description |
|---|---|
| CRC | Corrugated Resistor Cabinet |
| 100KW | Rated Power |
| 2.7R | Rated Resistance |
| J | Resistance Tolerance (K=±10%, J=±5%, H=±3%) |
| Performance Item | Test Condition | Requirement |
|---|---|---|
| Dielectric Strength | 2500VAC / 50Hz / 60S | Leakage current ≤10mA |
| Insulation Resistance | 1000VDC | ≥100MΩ |
| Short-Time Overload | 10 times rated power / 5S | No visible damage |
| Long-Term Load Life | 10S discharge, 90S interval cycle | >9000h |
| Damp Heat Test | 40℃±2 / 90%-95%RH /100h | △R≤±(1%R+0.05Ω) |
| Temperature Cycle | -55℃ / 55℃ /155℃ | No abnormal damage |
| Performance Item | Test Condition | Requirement |
|---|---|---|
| Terminal Strength | 45N / 30S | No looseness or damage |
| Vibration Resistance | 5-200Hz, 1g | No structural damage |
| Solder Heat Resistance | 350±5℃ / 3S | No abnormal change |
| Solderability | 235±5℃ / 5S | Coverage >95% |
Selecting a suitable braking resistor solution requires a comprehensive evaluation of electrical parameters, braking conditions, and installation requirements. Dufew Electric analyzes the actual application environment to recommend a suitable resistor configuration that matches system performance requirements.
The resistor configuration should be selected according to key drive system parameters, including motor power rating, inverter model, DC bus voltage, and rated current. These factors determine the required energy absorption capability and electrical compatibility with the braking system.
Different applications generate different braking energy levels. Important considerations include braking frequency, braking duration, energy generated during deceleration, and duty cycle requirements. Applications with frequent acceleration and deceleration usually require higher thermal capacity and more reliable cooling performance.
The resistance value needs to match the inverter specifications, required braking torque, and maximum allowable current to ensure effective energy dissipation without affecting system protection functions.
Installation conditions directly affect cabinet structure and cooling design. Factors such as indoor or outdoor installation, ambient temperature, ventilation conditions, and protection requirements should be considered during selection.
Based on these application parameters, Dufew Electric provides customized engineering support to help customers select suitable resistor configurations for different industrial braking systems.
Dufew Electric Corrugated Resistor Cabinet is designed for industrial applications requiring reliable energy absorption and stable braking performance. It is commonly used in medium and high voltage inverter systems, crane and hoisting equipment, elevators, rolling mills, mining machinery, port handling systems, belt conveyors, motor testing platforms, and other industrial energy management applications.
| Comparison | Corrugated Resistor Cabinet | Conventional Resistor Box |
|---|---|---|
| Power Capacity | Up to 500KW | Usually lower power range |
| Voltage Capability | Up to 3000V | Mainly low-voltage applications |
| Structure | Modular multi-layer design | Single integrated structure |
| Maintenance | Individual module replacement | Full unit maintenance |
| Cooling | Optimized airflow design | Limited heat dissipation |
| Application | Heavy industrial systems | Small and medium equipment |
Professional Power Electronics Manufacturing Capability
Dufew Electric specializes in industrial power resistors, braking systems, reactors, transformers, and power control solutions.
With professional manufacturing processes and electrical testing capabilities, Dufew Electric provides reliable resistor cabinet solutions for global industrial customers.
Dufew Electric provides professional packaging and transportation solutions for Corrugated Resistor Cabinet products.
Each cabinet is securely packed with export-standard wooden cases, reinforced fixing structures, and moisture protection materials to ensure safe delivery during long-distance transportation.
Available shipping methods include:
- Sea Freight: Suitable for large-volume international orders and heavy industrial equipment.
- Land Transportation: Available for domestic delivery and factory-to-site transportation.
- Rail Transportation: Suitable for cross-border industrial equipment shipment.
- Air Freight: Available for urgent small-size or replacement orders.
Before shipment, each Corrugated Resistor Cabinet is inspected, securely packaged, and prepared according to international transportation requirements.
Dufew Electric focuses on industrial resistors, braking systems, reactors, transformers, and power control solutions.
Resistance values, power ratings, cabinet structures, and installation requirements can be customized according to project needs.
Strict material selection, manufacturing control, and testing procedures ensure stable operation in harsh industrial environments.
Dufew Electric supports OEM customers, distributors, and industrial users worldwide with professional technical service and delivery support.
Dufew Electric follows strict quality control procedures throughout the manufacturing process, including material inspection, electrical testing, and final product inspection.
Our Corrugated Resistor Cabinet products are supported by:
- ISO 9001 Quality Management System Certification
- CE Certification
- Product Test Reports
- Electrical Performance Test Records
These certifications and quality documents ensure reliable performance, safety, and compliance for global industrial applications.
This product is mainly used for high-power energy dissipation in industrial braking systems, inverter applications, and motor drive equipment. It absorbs regenerative energy generated during motor deceleration to help protect power electronic systems from overvoltage issues.
Dufew Electric provides customized solutions with power ratings from 20KW to 500KW according to different industrial application requirements, including braking frequency, energy absorption needs, and operating conditions.
Yes. Dufew Electric can customize resistance values, power capacity, cabinet dimensions, cooling methods, and installation structures based on specific technical requirements.
It is widely applied in cranes, elevators, mining equipment, rolling mills, port machinery, conveyors, and other heavy-duty industrial systems that require reliable energy absorption.
Dufew Electric applies low-inductance resistor design, copper busbar connections, temperature protection systems, and strict quality inspection procedures to maintain stable performance during long-term operation.
Yes. Dufew Electric provides customized power electronics solutions for OEM customers, distributors, and industrial users worldwide, including technical support and project communication.
The cooling design can be configured with natural ventilation or forced air cooling using industrial fans according to heat generation, duty cycle, and installation environment.
Address
No. 364, Kangyang Road, Huangdai Town, Xiangcheng District, Suzhou City, Jiangsu Province, China
Tel
