The selection of the submersible pump should be correctly selected according to the characteristics of the working conditions, and the flow, head, installation method and so on are mainly considered in the selection. Only when the selected head is close to the actual required head can the submersible pump run with high efficiency and energy saving. Improper selection will have a great impact on the operation of the submersible pump.
Generally, the use environment of deep well submersible pumps should meet the following requirements:
1. A three-phase AC power supply with a power frequency of 50 Hz and a rated voltage of ±5%;
2. The solid content (by mass) is not more than 0.01%;
3. The water inlet of the submersible pump must be below the water level lm, but the diving depth should not exceed 70m below the static water level, and the lower end of the pump must be at least lm from the bottom of the well;
4. It is required that the well be vertical, the well wall should be smooth, and the well pipes should not be staggered.
