EMHEATER EM-SWF3 Series

Sinusoidal output filter for frequency inverters

Short Feature:

1.       Sinusoidal output filter for frequency inverters 2.       Sine wave voltage output 3.       Protect motor cable and can connect with multiple motors 4.       Use to purify and output sine wave of frequency inverter and UPS AC/DC   equipments 5.       No limit for output cable length

 

Specification

1. Motor frequency inverter is a kind of special inverter, generally uses SPWM modulation mode, used to drive special frequency asynchronous motor, commonly used relatively close distance (motor cable less than 100 meters).

2. When motor cable is too longer (more than 100 meters), the motor will produce high du/dt, which will damage motor insulation, cause coil breakdown aging, core loss increase, still can cause bearing heating serious, reduce motor life or damage, even can burned motor in heavily situation. So user must choose sine wave filter to solve this problem.

 

Constructure Feature:

My company produces the EM-SWF series sine wave filter adopting trait reactor, having professional filter capacitor and power resistor, reasonable structure, waveform distortion is small, small loss and low noise characteristics, can match with all brands frequency inverter and match many sets of machines, such as wind power, oil field, water and electricity, metallurgy, etc.

Electrical Feature:

1. To converse SPWM voltage current waveform of frequency inverter to approximate sine wave waveform (For the line load feature, the COS is greater than 0. 3 and T H D is less than 5%);

2. Protect motor insulation system, reduce bearing current, prolong service life, reduce motor noise;

3. With general asynchronous motor can replace frequency induction motor use;

4. Effectively restrain the high frequency loss and RF radiation interference, in certain occasions without to use a shielded cable, lowering the field Cable requirements;

5. Cable between motor and frequency inverter can extend to 500 meters, the longest can reach 3000 meters above;

6. We have 220 V \ 380 V \ 440V\ 690V \ 1140V three phase variable frequency drive system;

7. Suitable motor and inverter power range: 0. 4KW - 1600 KW;

8. Suitable frequency inverter output carrier frequency range: 1.5-16 KHz;

9. Basic frequency range: 0 to 400 Hz (above 50Hz order must tell us when order);

10. Driving load forms: asynchronous motor (After special design can use for EPS \ UPS and the surrounding power supply system);

11. Heat resistant level: F grade (for reactor part);

12. Protection level: IP 20. 

Technical condition:

Application Environment:

1. The altitude does not exceed 1000 meters;

2. Application environment temperature - 25 ? to + 4 0 ?, relative humidity is not more than 8 5%;

3. Surrounding environment has good ventilation conditions, such as loading in the cabinet, which should be equipped with ventilation fan;

4. No violent shock and severe turbulence place, has rainproof equipment place;

5. Environment without enough to corrosion metal box failure insulation gas and electric dust, etc.

Caution:

1. Sine wave filter has a percentage of voltage attenuation, attenuation value related to load current, fundamental wave, carrier frequency. General given carrier frequency 50Hz base frequency with rated load current, the voltage drop is about 7% to 10% (can adjust higher frequency inverter output voltage values to compensation);

2. Can't change the filter factory set or both parties agreed to use carrier frequency, otherwise, it will influence the filter use effect, serious will burn filter and frequency inverter.

Technical parameters:

The above parameters are for reference only and subject to change without notice. Other technical parameters and size can be customized according to the customer request.

Ordering instruction

1. The matched inverter or motor power (KW)

2. The voltage of inverter input (V)

3. The inverter rated output current (A)

4. The inverter output rated carrier frequency (KHz)

5. Be driven asynchronous motor highest operation basic frequency (Hz)

6. Be driven asynchronous motor highest continuous running current (A)

7. IP protection: IP20

8. The distance between inverter and motor (Meter)

9. Delivery time (Day)