Deep well pump power requirements

Deep well pump on the power requirements:
  First, the rated power supply voltage 380V ± 5% frequency of 50Hz ± 1%, the motor terminal rated voltage should be guaranteed within the allowable range of the rated voltage.
  Second, the transformer load power should not exceed 75% of its capacity,
  Third, the transformer far from the wellhead, the transmission line should consider the line pressure purple, for power greater than 45KW of the motor, requiring the transformer to the wellhead distance of not more than 20 meters.When greater than 20 meters, require transmission line specifications than the supporting cable two Grade, and consider the line pressure crimson.