Power Feed System of Electrically Driven Construction Machine

A power feed system of an electrically driven construction machine, the power feed system causing power to be provided from an external power supply to the electrically driven construction machine through a power feed cable, the power feed system comprising:

• a cable drum from and by which the power feed cable from the external power supply is drawn out and wound up;
• a drum sensor that senses a state quantity of the cable drum, the state quantity changing depending on drawing-out and winding-up of the power feed cable;
• a rotation angle sensor that senses a routing direction of the power feed cable with respect to the electrically driven construction machine;
• a monitor;
• and
• a controller that controls display on the monitor,
• wherein the controller is configured to compute a wound-up length of the power feed cable wound up by the cable drum on a basis of the state quantity of the cable drum sensed by the drum sensor and cause the monitor to simultaneously display the wound-up length and the routing direction sensed by the rotation angle sensor.