AC mains power cable (3-phase) to the Motor Control Unit
The electric hoisting motor on the hull unit requires 3-phase AC power for operation. The physical connections to the motor are made inside the terminal box on the motor. To avoid serious damage to the hoisting motor, and to ensure that the motor operates properly, you must verify that the electrical connections are made in accordance with the supplied 3-phase AC voltage.
Image
The hoisting motor is mounted vertically at the top of the gantry. The upper part of the motor is fitted to a gear box. This gear box is connected to the hoisting spindle using a timing belt. The electrical connections to the hoisting motor are made inside the terminal box. The 3-phase supply voltage for the motor can be 230, 380 or 440 VAC at 50 or 60 Hz.
WARNING
High voltages are used. This equipment must be serviced only by qualified personnel familiar with high-voltage equipment and the potential hazards involved. Failure to observe this precaution could result in bodily injury. Make sure that the 3-phase AC power is disconnected, and that the circuit breakers are disengaged in the ship’s fuse box.
Remove the cover on the power connections terminal box on the hoisting motor. Verify that the electrical connections to the hoisting motor are made in accordance with the supplied 3-phase AC voltage.
Refer to the illustration.
If necessary, change the physical connections.