20kW Braking Resistor is developed based on the actual pain points in industrial sites. It integrates high-power energy consumption, multiple cooling solutions, low inductance electrical design, high protection body structure, and full-dimensional customization capabilities. It can efficiently absorb the regenerative electrical energy from motor deceleration, stabilize the DC bus voltage, and prevent overvoltage tripping and component burning faults.
The product is compatible with global mainstream industrial voltages and is suitable for various installation conditions and harsh outdoor environments. It has undergone a complete set of high-voltage and aging tests before leaving the factory. It takes into account operational stability, usage safety, and flexibility for future adaptation. It is an ideal standard energy consumption component for industries such as elevators, cranes, wind power equipment, industrial test benches, and automated production lines.
1. Precise condition adaptation
Targeted at high-frequency start-stop and heavy-duty braking equipment such as frequency converters, servo drives, lifting machinery, and wind turbine pitch systems, it specifically addresses common on-site problems such as motor deceleration generating feedback electrical energy, grid fluctuations, and driver overvoltage errors.
2. Solid power performance
Standard rated 20kW continuous power consumption, capable of withstanding 40kW overload impact for short periods, meeting both intermittent braking and long-term continuous braking operation modes, suitable for high-intensity industrial conditions.
3. Wide range of applicable industries
The 20kW Braking Resistor can be directly applied to elevator control systems, port lifting equipment, industrial test platforms, wind turbine power generation units, and conveyor line frequency conversion transmission, with strong versatility and simple replacement and adaptation.
|
Parameter |
Specification |
|
Model |
RST-20kW-BR |
|
Rated Power |
20 kW (continuous) / Peak up to 40 kW for 10s (optional) |
|
Resistance Value |
Custom (typical range: 1Ω – 100Ω) |
|
Resistance Tolerance |
±5% ( ±1% available ) |
|
Voltage Rating |
Up to 1000 VDC (customizable) |
|
Cooling Method |
Natural convection / Forced air / Liquid (optional) |
|
Thermal Protection |
NTC thermistor or thermal switch (optional) |
|
Enclosure Rating |
IP20 |
|
Duty Cycle |
S3 – S6 (intermittent periodic duty, e.g. 10%–40% ED) |
|
Operating Temperature |
-25°C ~ +60°C (derating above 40°C) |
|
Connection Type |
Screw terminals / Busbar / Custom cable leads |
|
Mounting |
Floor / Wall / 19" rack (custom bracket) |
|
Dimensions (L×W×H) |
Customizable ( 500×300×200 mm) |
|
Weight (approx.) |
12 – 25 kg (depending on cooling & enclosure) |
|
Compliance |
CE, RoHS, IEC 60335-1 (safety) |
1. High-quality Temperature-Tolerant Core
Utilizing high-temperature-resistant winding resistors and a multi-layer insulation structure made of ceramics and mica, it has a high temperature resistance level and good resistance stability. It is unlikely to age or drift, nor is it prone to overheating during long-term operation.
2. Three Cooling Options Available
Supports natural air cooling for quiet operation, forced air cooling for high-density heat dissipation, and liquid cooling for installation in narrow spaces with high temperatures in harsh environments. These options can be freely selected based on the on-site server room space and ambient temperature.
3. Robust Enclosure
The entire machine is made of steel plates or aluminum alloy enclosures, with anti-corrosion spraying technology. The protection level is IP54–IP65, providing dustproof, waterproof, and moisture-proof protection, suitable for harsh industrial environments such as outdoors, mines, and ports.
1. Low inductance professional design
Optimized winding arrangement significantly reduces parasitic inductance, suitable for high-frequency switching frequency inverters, suppresses voltage spikes, and protects the driver and subsequent electrical components from shocks.
2. Wide voltage full-range compatibility
The 20kW Braking Resistor is compatible with 380V-690V AC systems, with a maximum support of 1000V DC bus, compatible with mainstream industrial voltage standards worldwide, and can be directly matched for export projects and domestic and foreign equipment.
3. Resistor value precisely customizable
The resistance value covers 0.5Ω-500Ω for any customization, with a tolerance of ±5%, capable of strictly matching the recommended parameters of various brands of inverters, with uniform braking force and smooth deceleration feel that is controllable.
|
Industry |
Specific Application |
Description |
|
Elevators & Escalators |
Elevator braking |
Absorbs regenerative energy from elevator VFDs during descent, ensuring smooth stops and protecting drive DC bus. |
|
Cranes & Hoists |
Lowering / overhauling loads |
Provides controlled deceleration torque when lowering heavy loads, preventing overspeed and drive overvoltage trips. |
|
Test Benches |
Dynamic load testing |
Simulates braking loads for motor and drive validation without mechanical brakes. |
|
Wind Turbines |
Pitch & yaw braking |
Dissipates energy during emergency stops or grid loss, protecting turbine pitch system electronics. |
|
Conveyors & Centrifuges |
Fast deceleration |
Enables rapid stopping of high-inertia loads without mechanical stress. |
|
Machine Tools (spindles) |
Spindle braking |
Shortens spindle stop time while protecting the drive from regenerative energy. |
|
Traction & Locomotives |
Auxiliary braking |
Used in light rail or mining vehicles for dynamic braking energy management. |
|
Renewable Storage |
Battery / supercap discharge |
Provides controlled discharge path for energy storage systems during testing or decommissioning. |
1. Optional overheat protection
NTC thermistor and normally closed thermal switch are available as options. They can be directly connected to the protection interface of the frequency converter, providing automatic overtemperature warning or circuit disconnection to eliminate the risk of overheating and fire.
2. Factory-wide full high-voltage testing
Each device undergoes 2.5kV withstand voltage insulation test, room temperature resistance calibration, and sampling thermal cycling verification. The insulation is reliable and the safety factor is high.
3. Adaptive to operating conditions
Supports continuous braking and intermittent braking cycle modes. It will not experience heat accumulation due to frequent start-stop, significantly reducing the frequency of on-site shutdown and maintenance.
1. Multiple Installation Methods
Offer three mainstream forms: floor-standing, wall-mounted side-mounted, and 19-inch rack installation. Customized installation brackets can also be provided to adapt to existing cabinet layouts.
2. Diverse Wiring Methods
The 20kW Braking Resistor comes with standard screw terminals and copper bus interfaces. Customized wiring options such as extended leads and waterproof flange heads are also available, making the wiring process simple and the connection stable.
3. Whole Machine Ready for Installation without Modification
Structural dimensions, wiring positions, and cabinet colors can all be customized according to the project. Once delivered, the equipment can be directly installed and used, eliminating the additional costs of on-site drilling, modification, and debugging.
1. Professional Protective Packaging
The 20kW Braking Resistor is wrapped with moisture-proof film and reinforced with foam. Heavy-duty models are packed in glued wood crates, and the terminals are sealed separately for protection, ensuring that the product is not affected by moisture during transportation or damaged and deformed due to bumps.
2. Complete Documentation Accompanying the Goods
Each order comes with a packing list, factory test report, resistance value inspection certificate, installation manual, and temperature control accessory information, meeting the requirements for project acceptance and foreign trade customs clearance.
3. Reliable Delivery and After-sales Service
Standard models are delivered within 10-15 days, custom models within 15-25 days; the complete machine enjoys a 18-month warranty, and free consultation on the braking circuit scheme, remote debugging, and fault technical support are provided.
1. Professional accumulation from the source factory
Ten years of dedicated research and production of braking resistors and load resistors. All processes from winding, welding, assembly to thermal testing are independently developed and controlled, ensuring consistent quality and no middleman markup.
2. Strict quality inspection system
ISO9001-certified production line. Every unit must undergo resistance value, insulation, withstand voltage, and temperature control tests. It complies with international standards such as IEC, UL, and NEMA.
3. Global project service experience
Products are exported to over forty countries. Familiar with local working conditions in Europe, Southeast Asia, and South America. We can assist customers in making parameter matching for projects and providing compliance documentation.
Address
No. 13, North Shore Road, Huangjiang Town, Dongguan City, Guangdong Province, China
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