Electrically powered hoist that is compatible with a three-phase / single-phase AC power supply

摘要

There is provided an electric powered hoist that is compatible with a three phase / single phase AC power supply that allows a power driven hoist that is compatible with a three phase AC power supply and that is equipped with an inverter and an AC electric motor to be combined into one can be changed to a single-phase AC power supply compatible electrically driven hoist by simply a single-phase AC to DC converter unit is attached with a simple structure to the electrically driven hoist compatible with the three-phase AC power supply. An electrically driven hoist compatible with a three-phase AC power supply, comprising a three-phase AC input terminal (41), a three-phase AC-DC converter (42), a DC circuit (43), an inverter (44), and a three-phase AC motor (7) is converted into a single-phase AC power supply compatible electrically driven hoist by a single-phase AC to DC converter unit with a single-phase AC input terminal (51), a Single phase AC to DC converter (52) and a DC circuit (53) is attached to the electrically driven hoist compatible with the three-phase AC power supply, and the P and N electrodes of a single-phase DC output terminal (54) AC to DC converter unit connected to the P and N electrodes of the DC circuit respectively and the three-phase AC input terminal is also cut off.