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Used module in USA

  • Trusted Seller
    GE 0501-0099-A1 MULTILIN T60 TRANSFORMER

    GE 0501-0099-A1 MULTILIN T60 TRANSFORMER PROTECTION MODULE

    • Manufacturer: GE

    This listing is for a Used GE 0501-0099-A1. The GE Multilin T60 (part number 0501-0099-A1) is a transformer protection relay designed for multiple-winding transformer applications. It provides comprehensive prote...

    $1,250 USD
    Detroit, MI
  • MBS WSK 30 Current Transformer

    MBS WSK 30 Current Transformer (BIN735)

    • Manufacturer: MBS

    MBS WSK 30 Current Transformer Palmetto Automation Inc. of Duncan SC specializes in buying, selling, and repairing obsolete Used, Refurbished, and New industrial electronic equipment. Most of our used equipment g...

    $32 USD
    Duncan, SC
  • Yokogawa YEW 250240MTMT Amperes Current

    Yokogawa YEW 250240MTMT Amperes Current Transformer (BIN433)

    • Manufacturer: Yokogawa

    Yokogawa YEW 250240MTMT Amperes Current Transformer. Palmetto Automation Inc. of Duncan SC specializes in buying, selling, and repairing obsolete Used, Refurbished, and New industrial electronic equipment. Most o...

    $29 USD
    Duncan, SC
  • Trusted Seller
    BLOCK Harmonic Filter HFM-FB 175-480

    BLOCK Harmonic Filter HFM-FB 175-480 Power Transformers

    • Manufacturer: BLOCK

    “Excellent used condition. Date of Manufacture: 08/18.” Applications This BLOCK Harmonic filter module to ensure sinusoidal main currents, reduction of main harmonic currents, increase in system service life and ...

    $10,999 USD

    Get financing

    Est. $216/mo

    Chico, TX

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.