Braking resistor SXLG, SBRU

aluminum-housedcompact

Braking resistors are important components in the operation of electrical machines. They are activated when the motor starts up and serve to protect the motor. In the process, braking resistors, as the name suggests, are used for braking. A braking unit is located between the motor and the resistor. As soon as the motor is to be stopped, the frequency is reduced via the frequency converter. Since the motor has a certain inertia, this results in kinetic energy being converted back into electrical energy, which is fed back to the frequency converter. This creates a very high DC link voltage in the frequency inverter, which is reduced by converting the excess energy in the braking resistor into heat. The compact braking resistors of the SXLG and SBRU series are built into a robust aluminium housing. The power classes from 120 W to 20 kW at voltages up to 400 V are convincing. Due to the simple mounting of the braking resistors, with a light and small design with tested protection class IP33, they are ideally suited for operation with frequency converters or servo motors. The aluminium housing resistor in the SXLG series is superior to the traditional porcelain frame resistor in terms of weather resistance, vibration resistance and safety.