Danfoss  dU/dt Filters - IP 54

Danfoss dU/dt Filters - IP 54

Danfos dU/dt filters reduce the dU/dt values on the motor terminal phase-to-phase voltage – an issue that is important for short motor cables.

dU/dt filters are differential-mode filters which reduce motor terminal phase-tophase peak voltage spikes and reduce the rise time to a level that lowers the stress on the insulation of motor windings.

Compared to sine-wave filters, the dU/dt filters have a cut-off frequency above the switching frequency. The voltage at the motor terminals is still PWM pulse shaped, but the rise time and Upeak are reduced. They are smaller, weigh less and have a lower price compared to sine-wave filters. Furthermore, because of the smaller inductance and capacitance, the dU/dt filters introduce a negligible reactance between inverter and motor and are therefore suitable for high dynamic applications.

Additional Models

ModelSKU
dU/dt Filter IP54 44Amp130B2837
dU/dt Filter IP54 90Amp 130B2840
dU/dt Filter IP54 106Amp130B2843
dU/dt Filter IP54 177Amp130B2846

Please Call 01296 488 294 or email sales@polypump.co.uk for availability and advice.

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