The ship is propelled by two 4500 kW (6000 HP) General Electric three-phase induction motors. The motors drive a single propeller shaft, which passes through the stern tube and drives a fixed-pitch propeller. The speed and direction of the motors are varied by the Propulsion Converter in response to commands from the bridge.
Table8.4.1.Propulsion Motor Specifications
Manufacturer
GE Power Conversion
Type
Three-phase AC Induction
Model
N3 HXC 1250 L/10 1
Series NC, H=Air/water cooling, X=Medium Voltage, C=Copper Cage, 1250 mm shaft height, L=magnetic circuit type, 10 pole
No. of sets
2
Rated Power
4,500 kW
Voltage
3,150 V
Current
1,035A
No. of Poles
10
Speed
0-115 rpm
The propeller shaft is supported by journal bearings which maintain radial alignment, and a thrust bearing which transmits thrust from the propeller to the hull and maintains axial alignment. The shaft is equipped with turning gear and a shaft lock. When either of these is engaged, propulsion is blocked.
