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Used Instrument Transformers

  • Instrument Transformer Inc. I.T.I 467-360

    Instrument Transformer Inc. I.T.I 467-360 (PRI.360V,RATIO 3:1,5VA)

    • Manufacturer: Instrument Transformer Inc.

    Voltage: 360 V, RATIO 3:1 | Stocking unit: Each | Va: 5 VA

    Cambridge, Canada
  • Instrument Transformer Inc. I.T.I 467-288

    Instrument Transformer Inc. I.T.I 467-288 (288V,RATIO 2.4:1 5VA) (ACC 1%)

    • Manufacturer: Instrument Transformer Inc.

    Voltage: 288 V, RATIO 2.4:1 | Stocking unit: Each | Va: 5 VA

    Cambridge, Canada
  • Instrument Transformer Inc. I.T.I 460-360

    Instrument Transformer Inc. I.T.I 460-360 (360 V 3:1,150VA) (ACC 0.6WX01.2X)

    • Manufacturer: Instrument Transformer Inc.

    Voltage: 360 V, RATIO 3:1 | Stocking unit: Each | Va: 150 VA

    Cambridge, Canada
  • Instrument Transformer Inc. I.T.I 460-346

    Instrument Transformer Inc. I.T.I 460-346 (PRI.346V,SEC.120V,150VA,ACC 0.6W 1.2X)

    • Manufacturer: Instrument Transformer Inc.

    Stocking unit: Each | Va: 150 VA

    Cambridge, Canada
  • Instrument Transformer Inc. I.T.I 2VT-460-60UCC

    Instrument Transformer Inc. I.T.I 2VT-460-60UCC (PRI.600V,5:1,150VA) (ACC 0.6WX1.2X)

    • Manufacturer: Instrument Transformer Inc.

    Voltage: 600 V, RATIO 5:1 | Stocking unit: Each | Va: 150 VA

    Cambridge, Canada
  • TRANS ALL MAGNETICS TRANSFORMER

    TRANS ALL MAGNETICS TRANSFORMER

      TRANS ALL MAGNETICS TRANSFORMER  The system was de-installed in working operational condition. All returns must comply with the stated Return Policy. Please continue: PAYMENT OPTIONS: We accept PayPal, Compan...

      $280 USD
      Carpinteria, CA
    • NIKON MISCROSCOPE TRANSFORMER

      NIKON MISCROSCOPE TRANSFORMER

      • Manufacturer: Nikon

      NIKON MISCROSCOPE TRANSFORMER  Please continue: PAYMENT OPTIONS: We accept PayPal, Company Check, Wire Transfers. TAXES & FEES: California Sales Tax applies if order within California at 8%. Handling charges...

      $59 USD
      Carpinteria, CA
    • Trusted Seller
      Galco PTW3-2-60-422FF INSTRUMENT TRANSFORMER 4200V

      Galco PTW3-2-60-422FF INSTRUMENT TRANSFORMER 4200V

      • Manufacturer: GALCO

      Galco PTW3-2-60-422FF INSTRUMENT TRANSFORMER 4200V manufacturer: Galco Never used PCP

      Hermosillo, Mexico
    • TRANSFORMER CLASS 328-1052

      TRANSFORMER CLASS 328-1052

        TRANSFORMER CLASS 328-1052 The system was de-installed in working operational condition. All returns must comply with the stated Return Policy. Please continue: PAYMENT OPTIONS: We accept PayPal, Company Check...

        $50 USD
        Carpinteria, CA
      • AMERICAN OPTICAL TRANSFORMER 365

        AMERICAN OPTICAL TRANSFORMER 365

          Information: AMERICAN OPTICAL TRANSFORMER 365 System was de-installed in working operational condition. All returns must comply with stated Return Policy. Please continue: PAYMENT OPTIONS: We accept Paypal, Compa...

          $78 USD
          Santa Barbara, CA
        • NDF-1500U TRANSFORMER

          NDF-1500U TRANSFORMER

            INFORMATION NDF-1500U TRANSFORMER System was de-installed in working operational condition. All returns must comply with stated Return Policy. Please continue: PAYMENT OPTIONS: We accept Paypal, Company Check, Wi...

            $148 USD
            Santa Barbara, CA
          • DIRECT PLUG-IN CLASS 2 TRANSFORMER

            DIRECT PLUG-IN CLASS 2 TRANSFORMER

              DIRECT PLUG-IN CLASS 2 TRANSFORMER System was de-installed in working operational condition. All returns must comply with stated Return Policy. Please continue: PAYMENT OPTIONS: We accept Paypal, Company Check...

              $16 USD
              Carpinteria, CA
            • OLYMPUS TOKYO TE-11 TRANSFORMER

              OLYMPUS TOKYO TE-11 TRANSFORMER

              • Manufacturer: Olympus

              Information:­­­­­­­ OLYMPUS TOKYO TE-11 TRANSFORMER Equipment demonstrations available upon request with an additional fee. All returns must comply with stated Return Policy. Please continue: PAYMENT OPTIONS: ...

              $199 USD
              Carpinteria, CA
            • ADAPTER 620 CLASS 2 TRANSFORMER

              ADAPTER 620 CLASS 2 TRANSFORMER

                INFORMATION: ADAPTER 620 CLASS 2 TRANSFORMER System was de-installed in working operational condition. All returns must comply with stated Return Policy. Please continue: PAYMENT OPTIONS: We accept Paypal, Compan...

                $99 USD
                Santa Barbara, CA
              • CLASS 2 TRANSFORMER EPA240050

                CLASS 2 TRANSFORMER EPA240050

                  Information: CLASS 2 TRANSFORMER EPA240050 System was de-installed in working operational condition. All returns must comply with stated Return Policy. Please continue: PAYMENT OPTIONS: We accept Paypal, Company ...

                  $12 USD
                  Santa Barbara, CA
                45678

                Overview

                Instrument transformers (current and voltage transformers) reduce high voltages or currents to safe, measurable levels for metering, protection, and control. They must meet accuracy classes, insulation ratings, and short-circuit withstand requirements for their application. Buyers look for clear nameplates, calibration records, standards compliance (IEC/ANSI), and the right mounting or enclosure type. Available options include oil-filled or dry-type designs, single- or three-phase units, and various secondary ratios.

                FAQ

                What should I check when buying a used instrument transformer?

                Verify nameplate data (ratio, class, burden, insulation level), calibration and test reports, physical condition, and history of overloads or faults. Confirm standards compliance and whether secondary terminals and accessories match your protection/metering equipment.

                How do I ensure instrument transformers meet accuracy and safety requirements?

                Request recent accuracy and insulation test certificates, lightning impulse and routine test results, and evidence of IEC/ANSI class ratings. For protection CTs, confirm T‑class or accuracy at specified fault currents and verify secondary burden compatibility.

                What are best practices for shipping instrument transformers?

                Securely brace units to prevent movement, protect bushings and terminals, and use moisture barriers for oil-filled types. Follow carrier rules for heavy loads, declare oil-filled equipment and hazardous materials if applicable, and insure for transport damage.

                What maintenance and testing should be done after delivery?

                Inspect for shipping damage, verify insulation and continuity, perform ratio and polarity checks, and run insulation resistance and power-frequency / excitation tests. For oil-filled units, sample oil and check for moisture and dielectric strength. Recalibrate as needed per manufacturer recommendations.