SineFormer inverter output filter technology recently introduced by EPCOS is used for frequency converters and drives. In contrast to convention filter topology, the SineFormer simultaneously converts the phase-to-phase voltages into sinusoidal waveforms and thus minimizes the common mode current that can damage motor bearings. By suppressing common mode voltage peaks to negligible levels, this technology practically eliminates EMI problems and allows faster and more economical motor installation since shielded cabling is not needed. SineFormer is available for 480 VAC motors with rated currents up to 180 A and for 575 VAC motors with rated currents of 320 A. Additional ratings with voltages up to 690 VAC and up to 600 A should be available soon. SineFormer is especially well suited to petrochemical, water, and agricultural operations where long motor cable lengths are needed. For more product information, see the EPCOSwebsite.
New Filter Technology Protects Motors in Extreme Environments
