Products Description

Industrial High Power Braking Resistor is a supporting energy-dissipating component for variable-frequency and servo drive systems. It applies to heavy-duty equipment such as cranes, elevators, mine crushers and high-speed fans, with power ratings ranging from several kilowatts to hundreds of kilowatts. When equipment decelerates and halts, the motor generates regenerative feedback energy. This resistor rapidly dissipates surplus regenerative energy to prevent frequency converter breakdown caused by excessive DC bus voltage. The product adopts alloy resistance wire and high-temperature-resistant ceramic bobbins, supporting stable operation between -40℃ and 300℃. Equipped with an optimized heat dissipation structure, it features shock resistance, corrosion resistance and an extended service life, ensuring stable, safe startup, shutdown and braking for industrial machinery.

Functional Features

Energy Dissipation & Conversion

It efficiently converts regenerative energy produced by motors during deceleration into thermal energy, preventing backflow of electric power that would damage power grids and drive assemblies.

Overvoltage Protection

It activates instantly when DC bus voltage surges abnormally, stabilizing voltage within a safe range and protecting frequency converters from damage.

Shock Buffering

It partially replaces rigid mechanical braking, reducing mechanical impact the moment equipment shuts down and lowering wear on transmission components.

Consistent Performance

Resistance values will not drift significantly under prolonged frequent startup-shutdown cycles, delivering uniform braking performance at all times.

Overheat Tolerance

It withstands intense heat spikes during short-duration overload conditions without sudden burnout or open-circuit failures.

Product Image

Operation Instructions

1. Installation Clearance

Reserve adequate ventilation space during installation. Avoid stacking debris nearby to guarantee unobstructed outward heat dissipation.

2. Circuit Wiring

Use matching high-temperature-resistant wires for wiring. Ensure terminals are fully fastened without looseness to prevent heat buildup from poor electrical contact.

3. Power-On Trial Run

Inspect the insulation integrity of the full circuit before initial power supply. Gradually test braking performance only after confirming no abnormalities.

4. Parameter Matching

Adjust the activation threshold of the braking unit according to the equipment's actual operating conditions to ensure compatibility between the resistor and the full system.

5. Routine Inspection

Observe the resistor's operating status regularly during daily production. Shut down the equipment for troubleshooting if abnormal surface overheating occurs.

Precautions

01/

The resistor surface reaches high temperatures during operation. Flammable materials are strictly prohibited in the vicinity to eliminate fire hazards.

02/

Do not install the resistor inside fully enclosed narrow compartments, as trapped heat will trigger overheating and burnout.

03/

Fit protective outer casings and warning labels around the resistor to prevent scald injuries from accidental human contact while the unit operates.

04/

Avoid prolonged operation outside the resistor's rated operating condition range, to prevent premature degradation caused by sustained overload.

FAQ

Q: Will Industrial High Power Braking Resistor generate loud noise during operation?

A: No harsh abnormal sounds occur during normal braking. Only faint airflow hum from heat dissipation can be heard as equipment decelerates smoothly; this sound is completely normal. As long as the matched transmission equipment runs steadily, the resistor itself produces zero vibration noise and will not disrupt daily workshop operations.

Q: Will long continuous operation release pungent odors?

A: Brand-new units may emit a faint odor from volatilization of the surface protective coating during initial short-term operation. This odor dissipates completely after several operating hours. No pungent or choking fumes are released during extended cyclic operation. The resistor will not contaminate workshop air or cause discomfort to on-site operators.

Q: How is the heat dissipation performance of Industrial High Power Braking Resistor?

A: The product incorporates a fully integrated optimized heat dissipation structure that removes operational heat via natural air circulation. When placed in standard ventilated indoor workshops under regular braking cycles, the unit maintains consistent heat dissipation without trapped heat buildup or dangerously hot surfaces that cannot be touched.