What are the electrical control transformation methods of electric scraper

Today, Xiaobian is here to share with you what are the electrical control transformation methods for electric scrapers:

The electric scraper has been introduced into the mine as the main carrier for decades, because of its high efficiency, safety and reliability, simple operation and maintenance and is welcomed by underground mines. The safety and reliability of the electric scraper have been improved by electrical control transformation, and the maintenance cost has been reduced while the production efficiency has been improved.

1, improve the working voltage of the main contactor coil, from the original AC 24V to AC 380V, through this improvement, the contactor action current is reduced by about 16 times, the advantage of this change is to reduce the control contact voltage loss, so that the contactor control contact heat is greatly reduced, while the contact electrical corrosion phenomenon is suppressed.

2, the motor integrated protector replaced the original use of thermal protection relay, the purpose of replacement is as follows:

A. Provide more protection for the motor and provide a safe and reliable working environment for the motor.

B. Because the motor integrated protector uses induction detection current, it reduces the use of thermal relay to generate intermediate nodes, eliminates the shortcomings of easy damage due to the small thermal relay contact capacity, and increases the mechanical strength because the motor power line is directly drawn from the contactor.

3, the use of intermediate relay, underground mine mobile equipment safety regulations stipulate that the operating voltage should not be greater than AC 24V, because in the first main AC contactor coil voltage is AC 380v, in order to make the circuit meet the requirements of the safety regulations, the use of intermediate relay for high and low voltage isolation.

4. The operating power supply is changed to DC switching power supply, which makes full use of the advantages of the wide input range of switching power supply and eliminates the false operation caused by the large voltage drop during startup due to the long distance of the power supply of the scraper.

The above is what Qingzhou Bachuan mining equipment shares with you about the electric scraper electrical control transformation methods, I hope to help you.