Specifications include, but are not limited to: The propulsion controller shall; i Provide the same level of performance in propulsion and braking as the current controller; ii Provide integrated operation with the blended friction brakes; iii Provide an electronic control unit to interface to discrete signals from the car components; iv Provide monitoring, diagnostic and maintenance tools, including comprehensive training; and v Retain the existing traction motors, gear boxes, and other truck-mounted components. F The propulsion container shall provide for stepless control of the two self-ventilated dc mono-motor trucks in propulsion and braking operation. i The nominal voltage on the motor is 750 Vdc, maximum voltage rating is 1000 Vdc. ii The effective field ratio is 80%, minimum field ratio is 50%. iii The motor is insulated to Class H. iv Armature resistance has been measured as 19.65 mΩ at 20°C (68°F). v Field resistance has been measured as 21.34 mΩ at 20°C (68°F). vi One hour ratings for the motors are: a Current 470 A b Power 323 kW c Speed 1676 rpm vii Maximum ratings are: a Current 700 A b Speed 3500 rpm c Gear ratio is 5.0909