The frequency of the submersible pump power supply is too low, which may cause the following problems：

1. Poor power quality: If the power frequency is too low, the power quality may be affected, which may affect the normal operation of the submersible pump.

2. Unstable operation: When the submersible pump is running at low frequencies, unstable operation may occur, such as uneven speed or failure to start.

3. Reduced efficiency: When the submersible pump is running at low frequencies, the efficiency may be reduced due to changes in the electromagnetic field of the motor, which in turn affects its normal pump performance.

4. Excessive temperature rise: Low-frequency operation may cause the temperature rise of the submersible pump motor to be too high, which will accelerate the aging or damage of the motor.

Therefore, for the problem that the power frequency of the submersible pump is too low, corresponding measures should be taken to solve it.For example, the operating conditions of submersible pumps can be improved by increasing the power frequency, strengthening power quality monitoring, and adjusting motor parameters.In addition, attention should be paid to strengthening the maintenance of submersible pumps, regularly checking the operating conditions and performance indicators of the motors, and discovering and solving potential problems in time to ensure the safety and normal operation of submersible pumps.