Sinewave filters covert the modulated, rectangular PWM VFD waveforms to, sinusoidal motor voltages. This reduces the acoustic switching noise associated with VFDs due to magnetostriction.
The use of sinewave filters permits the use of long cable lengths and prevents associated “standing waves” phenomena by eliminating cable ringing.
Sinewave filters reduce bearing currents caused by circulating currents but not common mode currents (i.e. shaft currents).
Available 2-1000A from 380V to 690V 50/60Hz in IP00 to IP20 for panel mounting and enclosures to IP54.
IP00 Sinewave filter with single three phase capacitor for panel mounting
IP00 Sinewave filter with IP23 capacitor bank
Brochure with specifications
For sinewave filter brochure click above
Sentinel Power Quality has the knowledge and experience
When applied correctly, filters are an important tool in the harmonic mitigation toolbox. However, no form of mitigation is perfect. The secret of success is recognising the pros and cons of all types of active and passive mitigation and being able to apply the most appropriate form of mitigation for any given application.
The engineers at Sentinel Power Quality have been involved in applying active and series passive filters since 2003 to standard and demanding applications.
Contact us with your application details and let us assist you.