low-pass electronic filter / passive / sine wave



  • Bandwidth:


  • Type:


  • Other characteristics:

    sine wave

  • Current:

    Min.: 3 A

    Max.: 1,200 A

    16 A

  • Voltage:

    Min.: 380 V

    Max.: 690 V

    400 V

  • Frequency:

    50 Hz


SWF Series Sine Wave Filters convert the PWM output signal of motor drives into a smooth sine wave with low residual;
Reduce the resonance phenomenon caused by distributed capacitance and inductance of the long cable(longer than 50 meters);
Eliminate the excessive motor voltage caused by high dv/dt,
Reduce noise of motor by filter application;
Prolong motor life;
Protecting the motor insulation;
Increase transmission distance;
With the application of this filter, normal motor can replace variable frequency motor.

Ventilators,conveyors,Pumps,Rail & Transportation
HVAC installations, Compressors
Elevators ,Cranes , wind power,UPS,EPS
Motor drive with long cable
Motor drive with multiple motors in parallel
Medium voltage applications(deployed in front of the step-up transformer)

Technical Data:
Nominal voltage range : 3*380 to 500VAC±10%
Motor frequency: 0-120Hz;
Switching frequency :2.0kHz -16K HZ;
Residual Ripple Voltage:THDv<5%
Voltage drop at rated current:≦10%(50HZ);
Motor Cable Length:Up to 2000m;
Work Model:Continuous for indoor operation
Norminal Motor drive input power rating:3.7kw to 630kw;
Efficiency:98 to 99%@norminal line voltage and power
Overload capability:150% 60S,120% 60min
Test Voltage:2240VDC,2s(line/line) 2720VDC,2s(lines/case)
Dielectric strength:AC4000V/5mA/60s
Insulation resistance:core-winding,≧100MΩ(DC1000V);
Climatic Category(IEC60068-1):25/100/21
Protection: IP54
Cooling:Internal forced air
Load type:typical motor load;standard step-up transformer;other linear load;