Abstract: A well pumping equipment comprises a pump (1) with an electric motor (2), each having its body suitable for location in a well using a tubing (3), a frequency converter (4) electrically coupled by a cable (5) to the electric motor (2) and including a rectifier (6) and inverter (7). The inverter (7) is adapted to be located in the well and is connected to the rectifier (6) by a single-conductor cable (5), while the other single-conductor connection line to supply power to the electric motor (2) and the inverter (7) is the electric connection of the motor (2) and inverter (7) bodies with the tubing (3).