Sine Wave Filter

The Sine Wave Filter is designed to optimize inverter/VFD output by converting PWM waveforms into a smoother near sine wave, helping to reduce waveform distortion, suppress high frequency harmonics, and protect motors and downstream equipment. Built with high quality copper wire, a silicon steel (iron) core, and integrated capacitor components, it provides safe, stable performance while improving power quality and system reliability. Typical ratings include 380V/690V (customizable) Rated Voltage, 5A–1600A rated Rated Current, and 50Hz/60Hz frequency. Inductance and electrical sensing capacity are customizable to match different drive systems. The unit features low noise (≤65dB(A) within 1 meter, typical) and supports operation in 25°C to +40°C environments, with protection grade IP00 (without chassis). Common application fields include new energy, UPS & uninterrupted power supply systems, electric vehicles, and motor drives. (Specifications can be customized—please confirm final data when ordering.)

Key Features

• Waveform Optimization: Filters high frequency harmonics to reduce distortion rate and deliver output closer to a power frequency sine wave.
• Motor Protection: Helps reduce dv/dt stress, motor heating, audible noise and insulation damage caused by PWM harmonics.
• Current Limiting Protection: Limits surge/inrush current (e.g., during motor startup) to protect electronic devices from impact damage.
• Reactive Power Compensation: Assists power factor regulation to reduce line losses and enhance overall grid efficiency.
• Industrial Grade Materials: Copper windings + silicon steel core with robust clamping and fasteners for stable inductance and durability.
• Wide Range & Customization: 380/690V (customizable), 5A–1600A, 50/60Hz, customizable inductance and sensing capacity, low noise design.