Description of Sine wave filter：

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.

Sine wave filter Characteristic:

Sikes Sine wave filters for various servo motor of VSD systems(esp for inverters or switching power suppliers),are designed to change the PWM output voltage of the inverter and generate an almost sinusoidal voltage .

Sine wave filterTechnical Data:
Nominal voltage range : 3*250±10%
Motor frequency: 0-120Hz;
Switching frequency :≧ 16kHz;
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:IP30(IP40/IP54 upon request),indoor:IP20
Cooling:Internal forced air
Load type:typical motor load;standard step-up transformer;other linear load;

Sine wave filter Technical Standards：
Capacitors:CEI EN 60831-1/2,IEC 831-1/2
Equipment:CEI EN60439-1,IEC 439-1,IEC 60939

Applications of Sine wave filter：
Ventilators,conveyors,Pumps
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)