Rotor. The rotor is machined from a single high alloy steel forging. The two pole design has 24 axial slots machined radially in the main body of the shaft. The axial vent slots machined directly into the main coil slot are narrower then the main slots and provide the direct radial cooling of the field copper. The two retaining rings are of the body mounted design. The rings will be made of 18 Mn - 18 Cr forged material which offers excellent protection against stress corrosion cracking. The coil wedges are segmented stainless steel. Radial holes are drilled in the wedges for ventilation passages. The shaft at the collector is designed to transmit the torque of an optional starting motor. A shrunk-on coupling is assembled after the collector rings are on, and it provides the interface point to the flex-coupling connection to the motor. The same arrangement and coupling are used with a static start system when the turning gear is replaced by a torque converter and starting motor.
Appears in 2 contracts
Sources: Contract for Purchase (Tenaska Georgia Partners Lp), Contract for Purchase (Tenaska Georgia Partners Lp)