64711245C

The application of frequency converter energy-saving technology in coal mine mechanical equipment is beneficial for reducing equipment energy consumption and improving coal mine production efficiency. This technology plays an important role in coal mine production. The article introduces the application of the new Kerui frequency converter on the main ventilation fan of a certain coal mine, and the results show that using the new Kerui frequency converter for speed regulation and energy-saving transformation of the coal mine main ventilation fan equipment has good social and economic benefits. The automation level of coal mines has been further improved, and the production process of coal mines is safer and more reliable.

Energy saving effect: The new Kerui frequency converter is used in the main fan to control wind speed, effectively changing the output of air volume and pressure, achieving the goal of energy conservation. The use of a fan as a frequency converter load device directly affects the speed of the fan. From the perspective of fluid science, the relationship between rotational speed and flow rate is proportional, the pressure of the fluid is proportional to the square of rotational speed, and the shaft power P is proportional to the cubic power of rotational speed. From the practical effect, it can be seen that the speed of the fan has been reduced by half,

 and the natural energy consumption has also been reduced by one eighth, indicating that the gearbox has achieved energy-saving of the main ventilation fan. Moreover, most coal mines use a fan to drive two motors, so based on this feature, one frequency converter can simultaneously control the normal operation of both motors. Regardless of the driving method used to control the power of the frequency converter, the total power cannot be smaller than the sum of the two motors.

In short, during the maintenance of high-voltage frequency converters in summer, attention should be paid to the temperature of the installation environment of the frequency converter, and the internal dust of the frequency converter should be regularly cleaned to ensure the smoothness of the cooling air path. Strengthen inspection and improve the surrounding environment of frequency converters, motors, and circuits. Check whether the wiring terminals are tightened to ensure the correct and reliable connection of all electrical components. Prevent unnecessary shutdown accidents from occurring.

Contact information: 15359293870

WhatsApp:+86 15359293870

Contact person: KELLY

Email: geabbdcs@gmail.com   386353502@qq.com

Official website:

4 digital inputs, 1 analog input, and 1 relay output.

Product specifications:

Starting torque: 180% at 3 Hz, 200% at 5 Hz (vector)

Carrier frequency: 1-15 KHz

Control method: SVPWM, V/F control, magnetic flux vector control

Output frequency: 0-650.00 Hz

Starting torque: 180% at 3 Hz, 200% at 5 Hz (flux vector)

Protection function: output short circuit, overcurrent/voltage, low voltage, motor overheating, IGBT overheating, grounding/leakage, communication abnormality protection

Cooling method: 0.4KW product natural cooling, other air cooling

Display functions: output frequency, output current, output voltage, output power, alarm recording (up to 12 sets), etc

LED light: frequency monitoring, voltage monitoring, current monitoring, motor operation indication, control mode indication, external operation panel indication

Surrounding temperature: -10~+50 ℃ (unfrozen)

Surrounding humidity: below 90% Rh (without condensation)

Storage temperature: -20~+65 ℃

Protection level: IP20

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