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VLT Filtr dUdt MCC 102
dU/dt filters increase the rise time of the line-to-line voltage at the motor terminals, which is particularly important when using short motor cables.
dU/dt filters limit the amplitude of voltage pulse peaks, thereby also reducing their damaging impact on motor winding insulation.
Compared to sine filters, dU/dt filters attenuate all frequencies above the switching frequency.
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Information:
Applications:
- Applications with short motor cables
- Applications with older motors
- Applications operating in harsh environmental conditions
- Applications requiring frequent braking
Better solution than output chokes
Output chokes can often contribute to undamped oscillations at the motor terminals, which increases the risk of high-amplitude overvoltages at the motor terminals. dU/dt filters are L-C low-pass filters with a defined cut-off frequency. As a result, the risk of voltage spikes and overvoltages at the motor terminals is reduced and depends on the attenuation characteristics of the filter.
Benefits:
- Compatibility and suitability for operation with frequency converters in various modes (including flux and VVC+)
- For high-power applications, parallel connection of filters is possible
- dU/dt filters limit voltage pulse amplitude and extend the line-to-line voltage rise time
- Excellent solution for using drives in applications with older motors
- Smaller, lighter, and more cost-effective than sine filters
- For high-power applications, parallel connection of filters is possible
- Compatibility and suitability for operation with frequency converters in various modes (including flux and VVC+)
