T/R set repair

    Stock can repair and rebuild almost any T/R Set manufactured in North America. Our process begins with an extensive T/R Set inspections and testing at our facility. After inspection and testing, a report and repair estimate will be submitted to the customer for review. T/R Set repair and refurbishment are completed per the customer requirements.

    • Preliminary external inspection prior to internal inspection
      • External visual inspection for damage and leaks
      • External Hi-Pot and Resistance test
      • Oil Sample testing
        • Insulation quality – electrical breakdown
        • Contaminants – metals, failed insulation, etc.
        • Dissolved Gas Analysis (DGA)
        • Polychlorinated Biphenyls (PCBs)
    • Internal inspection following negative results of PCB test
      • Internal visual component inspection for damage or tracking
        • Low voltage and Feedback signal bushings
        • High voltage output bushing(s)
        • High Frequency choke coil(s)
        • Diode Stacks and wiring
        • Internal switch and wiring
        • Core, Windings and Insulation
      • Electrical component testing
        • Megger test diode stacks
        • Megger test transformer windings
        • Resistance test wiring and connections
        • Resistance test internal switch
    • Test report and repair estimate submitted to customer for approval no later than 3 weeks after receipt of T/R at Stock
    • Extensive inspection and testing of rebuilt T/R Set
      • Transformer resistance and ratio test
      • Transformer No Load and Excitation/Load Loss tests
      • Transformer Induced Potential test
      • Diode Stack Megger test
      • Spark test
    • Repairs are warranted for 1 year from date of shipment from Stock