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Used Lem Current Transformer (Ct) in USA

  • Trusted Seller
    LEM Current Transformer LA 205-S/SP1

    LEM Current Transformer LA 205-S/SP1 (BJ0723-4)

    • Manufacturer: Lem

    LEM MPN: LA 205-S/SP1 USED Current Transformer LA 205-S/SP1 Approximate Dimensions (D x W x H): 2" x 2.5" x 2" Approximate Weight: 0.2 Lbs Shipping within 1 business day 30 Day Warranty Your purchase will include...

    $78 USD
    Chattanooga, TN
  • LEM HAK 150-S/SP2 Current Transformer

    LEM HAK 150-S/SP2 Current Transformer 4D-2

    • Manufacturer: Lem

    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 goes through basic power bench t...

    $41 USD
    Duncan, SC
  • Trusted Seller
    LEM Current Transformer LF1005-5 (1)

    LEM Current Transformer LF1005-5 (1) SET OF (6) NEW-S

    • Manufacturer: Lem

    This Auction is for: (6) LEM LF1005-5 CURRENT TRANSFORMERS **NEW BOX OF 6** ***ACTUAL PICTURE OF ITEM*** The Electric Barn has thousands of Electrical Supplies Terms and Conditions

    $600 USD
    North Hampton, NH

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.