For the knowledge of mining multi-stage pumps, I believe that everyone has a certain understanding, in order to have better use of it, it should understand the requirements of the power supply, the following is a detailed introduction for everyone:
1. The rated power supply voltage of the mine multi-stage pump is 380V±5%, the frequency is 50Hz±1%, and the rated voltage of the motor terminal should be within the allowable deviation range of the rated voltage.
2. The load power of the transformer should not exceed 75% of its capacity.
3. When the transformer is far away from the wellhead, the line pressure of the transmission line should be considered. For motors with a power greater than 45KW, the distance from the transformer to the wellhead is required to be no more than 20 meters. When it is more than 20 meters, the specification of the transmission line is required to be two grades larger than the matching cable, and the line pressure is considered.
