Spare Parts for SCT-PPT Excitation Systems

SCT-PPT excitation systems were supplied for gas and steam turbine generators from 1960 through the 1980s in the 5 to 250 MVA range. These compound-type exciters have both a Saturable Current Transformer (SCT) and a Power Potential Transformer (PPT). Their primary attribute is the ability to support transients in generator load due to single or 3-phase faults or starting large motors even with reduced terminal voltage.

The OEM has declared the obsolescence of the SCT-PPT excitation system. GTC carries a significant inventory of spares, and can perform repairs to avoid a costly excitation control system upgrade.


Our Spare Parts and Services Include:

  • Full Stock of Cards and Parts
  • 12/18-Month Warranty
  • Unused and Remanufactured Conditions
  • Optional Exchange Program
  • Troubleshooting
  • Commissioning
  • Surplus Panels
  • Core Upgrades
  • Unwanted Spares
  • In-House Repair Services
  • State-of-the-Art, Automated Test Equipment
    • For Fast and Complete Component-Level Troubleshooting
  • Functional Testing
    • Carried Out in Energized Panels for Added Reliability
  • Standardized Completion Report Describing Problems Found and Disposition
    • Issued with Every Repair
  • Testing and Certification on Spares

Find solutions for your OEM controls system.

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