Products

Dufew Electric's Electromagnetic Interference Filter is designed for VFDs and industrial power systems, using a multi-stage network of common-mode chokes, X/Y capacitors, and resistors to suppress electromagnetic interference. As a professional manufacturer and supplier in China, Dufew Electric offers 220–1140VAC, 5–1600A configurations with customized options for industrial applications.

Dufew Electric Electromagnetic Compatibility Filter is an industrial EMC filtering solution designed for VFD systems, servo drives, and power electronic equipment exposed to high-frequency switching interference. By suppressing conducted noise, common-mode interference, and unwanted electromagnetic emissions, it helps improve system stability and equipment compatibility. As a China EMC Filter manufacturer, Dufew provides customized solutions based on voltage rating, current capacity, switching frequency, cable configuration, and application requirements.

Dufew Electric manufactures Single-Phase Filter solutions for 220V AC electronic equipment, including variable frequency drives, servo drives, switching power supplies, UPS systems, and industrial controllers. Installed on the AC input side, the filter helps suppress conducted EMI and common-mode and differential-mode noise to improve equipment EMC performance. As a China manufacturer and supplier, Dufew Electric offers customized Single Phase EMI Filter options based on voltage, current, EMC requirements, and installation conditions.

Dufew Electric is a China Passive Filter Manufacturer and Supplier offering filter configurations based on system voltage, harmonic conditions, load characteristics, and application requirements.

Dufew Electric Derivative Voltage Filter (dv/dt Filter) is designed to protect motors driven by VFD systems, inverter drives, and industrial automation equipment from high-frequency PWM switching stress. Installed between the inverter output and motor terminals, it reduces voltage rise rate (dv/dt), limits transient voltage spikes, and helps minimize reflected voltage, common-mode interference, and motor insulation stress. With rated voltage from 220VAC to 1140VAC and rated current from 5A to 1600A, Dufew provides customized motor protection solutions for demanding industrial drive applications.

Dufew Electric Sine Wave Filter is a professional VFD output filter manufacturer and supplier for industrial motor systems. Installed between the VFD and motor, it uses an LC low-pass filtering circuit to reduce PWM switching components, high-frequency harmonics, and dv/dt stress. Dufew provides customized solutions based on voltage, current, cable length, and application requirements.