We help you choosing the resistor that fits best!
- High pulse-load
- High continious-load
- Easy mount in control racks
- Thermal monitoring
The variable frequency drive has to feed back the energy into the dc-link. In most cases the load that is fed back (generative load) while braking is very high. Therefore you need a dynamic braking unit and a external braking resistor to convert the energy into heat.
A maximum of 30% of the device capacity can be derived. When a higher braking power is needed you have to use a regenerating unit. Since in most cases there are only short braking times you have to calculate the braking-duration. Aided by the overload-factor that depends on the duration you can calculate the allowed short-time load with the continious load.
Regenerating units and dynamic braking units are also availible at EPA.