Sine Wave Filter are designed to provide a Sine Wave output voltage when driven from Variable Frequency Drives or other types of PWM inverters with switching frequencies from 2kHz to 8kHz.
For Variable Frequency Drive (VFD) applications, Sine Wave Filters eliminate the problem of motor/cable insulation failures, heating, and audible noise. Sine Wave Filters also reduce electromagnetic interference (EMI) by eliminating the high dV/dt associated with inverter output waveforms. Bearing currents are also reduced, especially in larger motors above 50 kW.
The perfect solution for:
• Applications with older motors
• Aggressive environments
• Applications with frequent braking
• 690 V above applications with general purpose motors
• Motor cable length between 350 and 3000 meters
Performance:
Work voltage: 220VAC to 690VAC,
Work current: 15A to 15000A
Rated voltage drop: 8 to 12%.
Harmonic Voltage Distortion when feeding a:
Transformer at full load and at 60Hz: 5% maximum
Motor at full load and at 60Hz: 5% typical
Ratings:
Continuous Current Rating 100% RMS, Intermittent Current Ratings: 150% for 1 minute
Minimum Inverter Switching Frequency: 2kHz
Maximum Inverter Switching Frequency: 8kHz
Nominal Inverter Operating Frequency: 60Hz
Minimum: 0Hz
Maximum with de-rating: 90Hz
Altitude without de-rating: 1000 meters
Maximum Motor Lead Length: 3000M
Maximum ambient temperature: 50° C open filters, 40° C enclosed filters
Insertion Loss: 10% of rated voltage maximum
Audible Noise: Maximum Audible Noise Level at
Two Meters for Standard Configuration: 76dB-A
Output Compatibility/Loading: Conventional 3 phase motors.
Standard step-up transformer with 4% minimum output impedance, "No load" continuous operation
