Paper: Reda Pumps -- Their Care and Operation

Power to operate the unit is generally taken from the lines of public utility companies who furnish 3-phase, 60 cycle power at carious standard voltages. Where utility power is not available, an engine generator unit is used at the well. The motor, which is a squirrel cage, induction type, turns the pump at approximately 3450 R.P.M. Maximum motor horsepower ratings are controlled by casing size.