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dynamic braking unit, brake choppers for AC variable speed drives

V&T EcoDriveCN® braking units (braking choppers) are used in the DC voltage intermediate circuits of AC variable frequency drives to control voltage when the load feeds energy back to the intermediate circuit.

The function of V&T EcoDriveCN® braking units is to divert into a dynamic braking resistor the regenerative energy produced in the process of decelerating the motor, converting that energy into heat. Regenerative energy flows from the motor into the drive/inverter DC Bus, manifested as increased bus voltage.



V&T EcoDriveCN® brake choppers are mainly used in AC drives system, which require fast deceleration, braking and positioning occasions, can improve braking performance and shorter deceleration time..

• Suitable for all brands of AC drives (VFD, VSD, frequency inverters)


• Can be applied for parallel operation with no capacity constraint


• Can use average resistance, not necessary to be non-inductive resistance


• Wide range voltages, suitable for AC variable frequency drives in different voltage rating


• High reliability design


• Long term high stability and wide compatibility


• Many protection functions: short circuit, under-voltage, over-voltage, overcurrent, overheating etc


• Conformity with CE, IEC, FCC


• No configuration or commisioning required

V&T EcoDriveCN® dynamic braking unit is particularly suitable for the applications where fast braking is required.

V&T EcoDriveCN® dynamic brake units applications: high inertia, or needs sharp deceleration, braking occasions, include centrifuges, steel mill, CNC, machine tools, washing machines, dryers, driving, elevators, cranes, mine hoist, textile machine, paper machinery, wire drawing machine, winder.

Visit V&T EcoDriveCN® drives

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