Starting and Braking Resistors
Dynamic Braking resistor (DBR): The dynamic braking is particularly suited for motors driven by inverter. The motor is brought to brake by reducing the power supply, realizing a negative running. The asynchronous device will work as a generator, therefore will supply electrical power. This electrical power is dissipated by an external braking resistor, linked right upstream the inverter, avoiding this way the activation of protections which will result in a block of the very same inverter. The inverter can dissipate the regenerated energy during the AC motor braking up to the 3% of its rated power.