A three-phase/single-phase alternating-current power supply compatible electrically driven hoisting machine comprising:
- an inverter-equipped electrically driven hoisting machine body of three-phase alternating-current power supply compatible type, the inverter-equipped electrically driven hoisting machine body having a three-phase alternating-current input terminal to which a three-phase alternating-current power supply is connectable, a three-phase AC-DC converter converting a three-phase alternating current input to the three-phase alternating-current input terminal into a direct current, a direct-current circuit connected to an output side of the three-phase AC-DC converter, an inverter connected to an output side of the direct-current circuit and converting a direct current electric power from the direct-current circuit into an alternating-current electric power having a predetermined phase and a predetermined frequency, an alternating-current electric motor for load hoisting up and down connected to an output side of the inverter, and a converting mechanism converting a rotational force of the alternating-current electric motor into a hoisting up-down force of a load hanging device;
- and
- a single-phase AC-DC converter unit having a single-phase alternating-current input terminal to which a single-phase alternating-current power supply is connectable, and a single-phase AC-DC converter converting a single-phase alternating current input to the single-phase alternating-current input terminal into a direct current;
- wherein, when the inverter-equipped electrically driven hoisting machine body is to be used as a three-phase alternating-current power supply compatible type, the single-phase AC-DC converter unit is not used, and the three-phase alternating-current power supply is connected to the three-phase alternating-current input terminal;
- whereas, when the inverter-equipped electrically driven hoisting machine body is to be used as a single-phase alternating-current power supply compatible type, the single-phase AC-DC converter unit is attached to the inverter-equipped electrically driven hoisting machine body, and an output side of the single-phase AC-DC converter unit is connected to the direct-current circuit, and the three-phase alternating-current input terminal is open-circuited from the three-phase alternating-current power supply, and further the single-phase alternating-current power supply is connected to the single-phase alternating-current input terminal of the single-phase AC-DC converter unit.