A braking resistor is designed to absorb and dissipate energy generated when the motor operates in generator mode during braking, thereby creating a braking torque on the motor shaft.
Braking resistors are used across various industries, particularly in electric drive systems where controlled deceleration is required.
Braking resistors can be manufactured as part of a standard range or custom-designed and engineered according to customer requirements specified in technical documentation or questionnaires, based on required resistance, power, and load cycle parameters.
Enclosure Material:
galvanized sheet steel;
sheet steel with protective coating;
stainless steel.
Protection Rating:
from IP00 to IP54.
Cooling type:
The technical characteristics and design of braking resistors may vary significantly depending on the application and load conditions.
Low-power resistors can be installed in distribution systems alongside other components. High-power resistors dissipate significant amounts of thermal energy and are typically housed in separate enclosures.
For accurate resistor selection and calculation, we recommend completing a technical questionnaire or providing technical specifications.
traction electric drives;
lifting mechanisms (cranes);
conveying systems (conveyors, escalators);
lifting drives (elevators);
other systems requiring controlled deceleration.
resistance value;
voltage level;
rated power;
load duty cycle;
overall dimensions.
A braking resistor is designed to absorb and dissipate energy generated when the motor operates in generator mode. This mode occurs due to the inertia of the load or external forces (for example, gravity when lowering a load in lifting equipment), causing the rotor to rotate faster than set by the control system (e.g., a frequency converter).
In other words, during deceleration or stopping, the motor can operate as a generator, converting kinetic energy into electrical energy. This mode is used to reduce speed or bring the system to a complete stop.
The generated energy is transferred to the DC link of the frequency converter. When the voltage exceeds the permissible level, the braking module redirects the energy to the braking resistor.
The braking resistor converts electrical energy into heat and dissipates it into the environment, thereby generating braking torque on the motor shaft.
