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Protect motors with this new dV/dt filter

| By Mary Page Bailey and Gerald Ondrey

The dV E-Series motor-protection filter (photo) mitigates reflective waves, reduces rise time and limits peak voltage, resulting in reduced motor heating, longer cable and motor life, and a significant reduction in downtime and total ownership cost. Using a d V/d t filter enables uptime and protects a.c. motors from the destructive effects of the variable-frequency drive (VFD) pulse-width modulated voltage that can damage cables and motors. The dV E-series offers up to 60% lower wattage loss versus competitive d V/d t filters, enabling more efficiency and savings, and ensuring longer life and protection for equipment around the filter, according to the manufacturer. It features a compact design that is said to be up to 73% lighter and 35% smaller than other commercial products for easier installation in crowded cabinets. — MTE Corp., Menomonee Falls, Wis.