C628 - MagnumMacKivler/RLCPT2 GitHub Wiki
Image Copyright flickr user Yukon Yeti
The C628 was the direct replacement for the unbuilt C624, phasing it out before any Century units hit the production floor. Despite the fact that it holds the highest production of US built centuries, they were rather troublesome electrically, having an absurd amount of transition steps; due to this, there are only three left, none of which are operational.
PT-Specific Information
| General Info | - |
|---|---|
| Prime Mover | ALCO 16-251C |
| Horsepower | 2750 |
| Truck Type | Alco Trimount (1) |
| Axles | 6 |
| Traction Motors | 6 |
| Minimum Weight | 340,000 lbs |
| Maximum Weight | 420,000 lbs |
| Model Base Speed | 70 MPH (2) |
| Top Speed | 70, 80, or 86 MPH (2) |
| Electrical System | - |
|---|---|
| Generator Max Current | 5400 Amps |
| Max Traction Motor (TM) Current | 1800 Amps |
| Max Continuous TM Current | 1085 Amps (3) |
| Traction Motor Type | DC |
| Factor of Adhesion | 25% (1) |
| Transition Mode | Automatic with Selector |
| Transition Groups | 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1 |
| Transition Shunts | 1, 0.95, 0.91, 0.87, 0.83, 0.79, 0.75, 0.71, 0.67, 0.63, 0.59, 0.55, 0.51, 0.47, 0.43, 0.39, 1, 0.91, 0.87, 0.79, 0.71, 0.67, 0.63, 0.55, 0.47, 0.43, 0.39 ⚠ |
| Generator Transition | No |
| Traction Control | APR |
| Dynamic Braking (DB) Mode (if used) | Mechanical Blowers @ 50% |
| DB Max Current | 830 Amps |
| DB Max Continuous Current | 830 Amps |
| Blended Braking | No |
| Miscellaneous | - |
|---|---|
| Head-End Power (HEP) | No |
| HEP Power Consumption | N/A |
| HEP Standby/Run Mode | N/A |
| Load Ramp Speed | 10 Amps/Tick |
| TM Overload Protection | No |
| Starter Mode | Latched Primer, Manual Start |
| Air Brake Schedule | 26-L |
| Compressor CFM | 236.25 (Wabco 3CDC @ 1050 RPM) |
| Main Reservoir Volume | 35.2 Cubic Feet |
Notes
⚠: Not Verified or Educated Guess
(1): Late production C628s could be bought with Alco's three-axle Hi-Ad, boosting the adhesion to 29%.
(2): Later in production the gearing options changed, making the base speed 67 MPH and the max speeds 67, 75, 79, or 84 MPH
(3): Later Alcos had newer GE 752 traction motors, changing this rating to 1195 Amps.