Sine Wave Filter

Sine Wave Filter

With connecting with sine wave filter, the PWM inverter can output sine wave voltage when the switching frequency range within 2 to 8Khz. In the frequency inverter application, this type filter can eliminate the problem of motor insulation failure and decrease electromagnet interface by eliminating the high Dv/Dt related to inverter output waveform to improve the performance of motor and extend motor service life span. The extend inverter output cable length can up to 3KM. For the protection of wires and cables, the sine wave filter can avoid over-voltage of the drive motor with a long lead.

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. 

Applicable standard 


Dimension