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Comprehensive motor and drive protection with this dV/dt filter

| By Chemical Engineering

The new dV Sentry motor-protection dV/dt filter offers comprehensive protection of variable-frequency drives (VFDs) and motors. The dV Sentry is intended for use in heating, ventilation and air conditioning (HVAC), water and wastewater and irrigation applications. The patented Triple Defense Core technology allows the dV Sentry to protect advdt snetry wordcloudgainst power distortion created over long-lead voltage power distortion, voltage spikes and common-mode voltage. The device has been shown to reduce common-mode voltage by over 50%, says the company, decreasing the risk of damage to motor bearings and insulation, as well as providing less erratic VFD behavior. The dV Sentry operates from –40 to 60ºC, and creates little noise (less than 65 db) during operation. — MTE Corp., Menomonee Falls, Wis.