Sine Wave Filters for VFD

Three Phase sine wave filters especially designed for VFD to protect the motors, it's used for output side of frequency converters and convert the PWM output signal of motor into a smooth sine wave with low residual. Besides it reduces the resonance phenomenon caused by distributed capacitance and inductance of the long cable (longer than 50 meters).

Features

  • Avoid the premature motor deterioration caused by high dv / dt, over voltage and reflection wiring.

  • Reduce eddy-current loss and the leak current caused by the harmonics.

  • Reduce overheating and noise of motor

  • Increases the lifetime of the motor

  • Recommended for installations with cables over 50 meters in length between the inverter and motor.

 Sine Wave Filter
  • Technical data

  • Connection diagram

  • Output voltage comparative waveform of inverter

  • Select filter current according to motor rating

  • Mechanical Figure

Technical data

  • Operating voltage range380V…480V

  • Switching frequency4KHz-10KHz

  • Rated FrequencyThree Phase 50Hz

  • Ambient temperature< 40℃ (Note: average temperature)

  • <35℃ within 24hours)< 35℃ within 24hours)

  • Elevation above sea level< 1000m a.s.l.

  • Protection class IP00 indoor

  • Max. Cable lengthNo limit

Connection diagram

Output voltage comparative waveform of inverter

Select filter current according to motor rating

Ording CodeMotor Rating                                    
                                    (KW)
Rated Current                                    
                                   (A)
Dimension(mm)Weight                                    
                                   (Kg)
L
WH
DEF
SFR8400010.752150165155780504
SFR8400021.54185205175790909
SFR8400032.261852051757909010
SFR8400053.781852051757909011
SFR8400075.5132102151951010010013
SFR8400107.5162102151951010010014
SFR84001511242302202201012010520
SFR84002015322702352401013511528
SFR84002518.5402702352401013511530
SFR84003022483002502601014013038
SFR84004030603002502701014013042
SFR84005037753602753451020516060
SFR84006045903602753451020516065
SFR840075551103602753451020516070
SFR8401007514542032043010280160120
SFR8401259018042032044010280160130
SFRI4415011021042032045010280160145
* Other specification are available upon request.

Mechanical Figure

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