Resistors, dedicated for use with MCRF-ST 20kW frequency inverters 3.4 OHM MCRF-ST 20KW 3.4 OHM

Braking resistors for frequency inverters – a key to effective energy management

Braking resistors, such as the MCRF-ST 20kW 3.4 OHM model, are an integral part of systems using frequency inverters. Their task is to safely dissipate the energy generated during motor braking, converting it into heat. Without a braking resistor, excess energy could damage the inverter or cause it to malfunction. This solution is particularly important in applications requiring frequent and dynamic braking, such as in cranes, lifts or packaging machines.

Design and application

The MCRF-ST 20kW 3.4 OHM resistor is designed specifically for use with LS Electric inverters, although it may be compatible with other brands (check the technical specifications). It is characterized by compact dimensions (550 x 260 x 392 mm) and a safe housing, which ensures easy installation and safe operation. A built-in PTC sensor monitors the resistor's temperature, protecting it from overheating and extending its service life.

Using a braking resistor allows for:

• Effective energy dissipation: Prevents damage to the inverter and ensures stable system operation.
• Smooth braking: Enables controlled stopping of the motor without sudden jerks.
• Increased reliability: Protects system components from overvoltage and overload.
• Cost optimization: Extends the life of the inverter and reduces the risk of costly repairs.

Parameters and characteristics

The MCRF-ST 20kW 3.4 OHM resistor is a component with a power of 20 kW and a resistance of 3.4 Ohms. This value is matched to the specific operating parameters of the inverter and the characteristics of the load – selecting the right resistor is crucial for the correct functioning of the braking system. It is worth noting that resistors in this series are available in a wide range of powers (from 120 W to 100 kW), allowing you to tailor the solution to different applications and energy needs. This allows you to optimize both the costs and efficiency of the entire drive system.