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Used processing in USA

  • ACME Transformer T-2-53007-S 240/480V 50/60Hz

    ACME Transformer T-2-53007-S 240/480V 50/60Hz 1 Phase. 4B-21

    • Manufacturer: Acme

    We repair all types of industrial automation including AC Servo Drives, Servo Motors, Operator Interface Panels, PLC's, Sensors, Process Controls and Timers. Palmetto Automation Inc. of Duncan SC specializes in b...

    $39 USD
    Duncan, SC
  • ACME ELECTRIC Dry Type 45

    ACME ELECTRIC Dry Type 45 KVA HV 480V LV 240/120V Transformer 49NT33 T3045K0023B

    • Manufacturer: Acme
    • Phase type: Three-phase

    Up for sale is new surplus ACME ELECTRIC Dry Type 45 KVA HV 480V LV 240/120V Transformer Grainger part number 49NT33 Model T3045K0023B. Please see pictures of tag for detailed specification. Has a couple small co...

    $2,500 USD
    Santa Clarita, CA

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.