The parts inside the powerhouse.
Ross Hill and NOV controls, power conversion, and the supporting hardware around them. Start with the equipment family, then get down to the exact number.
Control modules
Start with the full module number. The suffix and the system it controls matter as much as the family.
AC generator-control functions and DC motor-drive control are different jobs. Do not select a replacement by its enclosure or connector alone.
Generator & plant controls
Excitation, synchronizing, and power limiting belong to the generating plant. Keep these distinct from DC motor field supply.
Bridges & phase cells
Identify the SCR model, assembly number, and power section before selecting components.
DC contactors
High-current switching and assignment hardware, identified by complete number and coil configuration.
Console, field & braking
The operator controls and supporting assemblies around the drive.
Working from a whole system?
Use the system guides when the requirement covers more than one component.
Have the number? Start there.
Send the complete part number, quantity, system model, and clear photographs of the installed label. A photo of the surrounding assembly helps us identify the right context.
Independent supplier, not an authorized distributor. Manufacturer names and part numbers are used for identification. Exact configuration is checked for each request, and condition is disclosed before sale.