A braking resistor is designed to absorb and dissipate the energy generated when the motor operates in generator mode during braking, thereby creating a braking torque on the motor shaft.
Braking resistors are used in various industries, especially in electric drive systems where deceleration control is required.
Braking resistors can be manufactured within the standard product line, as well as calculated and designed individually according to customer requirements specified in the technical specification or questionnaire, based on the provided values of resistance, power, and load cycle.
Housing material:
Degree of protection:
from IP00 to IP54.
Cooling type:
The technical characteristics and design of the braking resistor may vary significantly depending on the application and load conditions.
Low-power braking resistors can be installed in switchgear along with other components. Braking resistors designed for higher power ratings dissipate a large amount of heat energy and are manufactured in separate housings.
For accurate selection and calculation of a resistor, we recommend filling out a questionnaire or providing a technical specification.
A braking resistor is intended to absorb and dissipate the energy generated when the motor operates in generator mode, which occurs when the motor is driven by inertia of the load or another force (for example, gravity when lowering a load with a crane) acting on its rotor and forcing it to rotate faster than set by the control system (such as a frequency converter). In other words, when the motor slows down or stops, under certain conditions it operates as a generator, converting kinetic energy into electrical energy. This mode is used to reduce the speed or completely stop the mechanism.
The motor in generator mode transfers the released energy to the DC link of the frequency converter. When the DC link voltage exceeds a threshold, the braking module redirects the incoming energy from the motor to the braking resistor. The braking resistor converts this energy into heat and dissipates it into the environment, thereby creating a braking torque on the motor shaft.
