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1. The variable frequency speed control device adopts the principle of three-level clamped. 

2. Low voltage IGBT device is adopted in PWM voltage source VFD, which has the advantages of fast switching speed, small loss, simple buffer and drive circuit. 

3. The IGBT protection and drive circuit are designed by ourselves. Considering the characteristics of the submersible electric pump, the device output can be tested for short circuit protection, so as to protect the unit and device. 

4. General IGBT was adopted. As the IGBT technology is very mature, its performance is stable and reliable, which ensures the safety and reliability of the product and reduces the maintenance cost. 

5. The three-level topology structure reduces the influence of the output voltage dv/dt of the inverter on the motor, reduces the output harmonics, and reduces the overvoltage and harmonic loss of the cable and the units. 

6. Modular design was adopted to achieve good technology, simple structure and high reliability. 

1. With complete protections, such as over-voltage, undervoltage, over-current, phase missing, short circuit, overload, overheating, underload, etc.

2. With LED display, displaying output current, voltage, frequency, error reasons, etc.

3. System parameters can be set through the keyboard.

4. Operating conditions can be monitored through the communication with the computer.

5. Voltage, current and frequency monitoring signals can be provided.

6. Start time and running frequency can be set arbitrarily.

7. Digital or analog current recorder for the electric pump unit can be provided to monitor its operating conditions.

TK2000 ESP MVD is a special medium-voltage VFD designed according to the features of the electric submersible pump in the oil industry. The product has been used in many oil fields at home and aboard, which has reliable operation and stable performance. The VFD has the three-level midpoint box structure, which has simple and convenient operation, perfect protection function and high intelligent degree.

1. The elevation shall not exceed 1,000m, and it shall be derated for use when exceeding 1,000m;

2. Ambient temperature: -40℃ to 50℃ (-40°F to 122°F);

3. Maximum average relative humidity: ≤90% (20℃/68°F);

4. The installation foundation shall be free of intense vibration and impact, and free of vertical inclination;

5. Indoor ventilation shall be good during use, and the clear space above and surrounding the device shall be >700 mm;

6. Environment free of corrosive gas or dust.