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Used Current Transformer (Ct) in Ohio, USA

  • G.E.,139C4970G250,CURRENT TRANFORMER 1600A NEW

    G.E.,139C4970G250,CURRENT TRANFORMER 1600A NEW

    • Manufacturer: GE

    NEW UNUSED!!..SEALED PACKAGE....NOS PLEASE SEE PICTURES FOR DETAILS AND CONDITION..YOU WILL RECIEVE WHAT IS IN THE PICTURES...IF WE HAVE MULTIPLES OF THE SAME ITEM,THE PICTURE MAY DIFFER...PLEASE REVIEW THE PICTU...

    $120 USD
    Galion, OH
  • 7.5 kVA Transformer 5007

    7.5 kVA Transformer 5007

      One (1) used 7.5 kVA Transformer Manufactured by General Electric Model: 9T21B1005 G2 7.5 kVA, 60 Hz Serial number: HR Type: QM Currently set up to transform between 480 and 240 Volts Can transform between 240 an...

      Painesville, OH
    • 7.5 kVA General Electric Transformer

      7.5 kVA General Electric Transformer 5006

      • Manufacturer: GE

      One (1) used 7.5 kVA Transformer Manufactured by General Electric Model: 9T21B1005 G2 7.5 kVA, 60 Hz Serial number: GR Type: QM Currently set up to transform between 480 and 240 Volts Can transform between 240 an...

      Painesville, OH
    45678

    Overview

    Current transformers (CTs) convert high alternating currents into a scaled secondary current for meters, relays and protection systems. Available as window, wound or bar types, CTs vary by ratio, accuracy class and saturation behavior. Proper selection focuses on rated primary current, burden, insulation, knee-point for protection use, and condition when buying used for substations, switchgear, or industrial panels.

    FAQ

    What should I check when buying a used CT?

    Verify the nameplate ratio and accuracy class, inspect for physical damage or oil leaks, request recent ratio and insulation test reports, and confirm the CT type (wound/window/bar) and its knee-point if used for protection.

    How should a CT be prepared and shipped safely?

    Drain and seal oil-filled CTs if required, protect bushings and cores, short and ground the secondary terminals, secure the unit to prevent shock, and use a carrier experienced with electrical equipment plus insurance.

    What routine maintenance and tests are essential for CTs?

    Perform visual inspections, insulation resistance tests, ratio and polarity checks, check for oil contamination on liquid-filled units, and schedule periodic accuracy and dielectric tests per manufacturer guidelines.