3 Phase Sine Wave Filters For Vfd Frequency Converter

ZK sine filter for VFD frequency inverter/converter features:

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).
:
. 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.

Application:

1. Cover the PWM waves to sine wave by sine wave inverter
2. Reduce the eddy current losses of the motor and the motor noise
3. Reduce the pulse current of the output cable and motor, extending the lift of motor
4. With SFR, the motor can be work well with the longer cable.
5. Reduce the external radiation . Unshield cable can be used in some application, lowering the requirement of onsite cable layout.
6. Suppress high Dv/Dt, over voltage, motor overheat, current eddy effectively to protect motor.

Working condition:
1. Working voltage: 220V/1140V
2. Working frequency: 50/60Hz
3. Rated current: 3A to 1600A
4. Carrier frequency: 2 to 8KHz,
5. Insulation class: Class F. H
6. Operation environment: No need derated suing during -10℃to 45℃, if work in above 45℃, the rated current will be reduce 2% for every 1℃rising.
7. Protection class: IP00-IP22.
8. Voltage drop: < 4%, if large than this value, the output torque of inverter will be lower.
9. overload tolerance capability: 1.5% rated current for 60s.
10. Noise: ≤65DB.
11. Temperature rise:≤85K
12: Dielectric strength: Steel wire core 3000VAC/50Hz/5mA/10s no electric arcing puncture.
13: Insulation resistor: 1000VDC insulation resistance value ≥100MΩ.
14: working under sea level below 2000m
15. Running condition: temperature-25℃to 45℃, comparative moisture not over 90%.
16: No hazardous gas, no inflammable and explosive
17: Good ventilation.