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Used Current Transformer (Ct) in South Africa

  • Trusted Seller
    1983 TAMINI Main Transformer

    1983 TAMINI Main Transformer

    • Manufacturer: TAMINI

    (1983) TAMINI Main Transformer 10,000 kVA Industrial Transformer with O.F.W.F. Cooling Built by TAMINI for large-scale metallurgical or industrial applications, this HVA 4000 model provides robust power distribut...

    South Africa
  • Trusted Seller
    Breaker, Circuit;Magnetic Blow Out Air

    Breaker, Circuit;Magnetic Blow Out Air

      BREAKER, CIRCUIT;MAGNETIC BLOW OUT AIRBREAKER, CIRCUIT; TYPE MAGNETIC BLOW OUT AIR, POTENTIAL6 KV, CURRENT 1250 A; be sold as a single lot.

      Johannesburg, South Africa
    • Trusted Seller
      Auction
      Breaker, Circuit;Magnetic Blow Out Air

      Breaker, Circuit;Magnetic Blow Out Air

        BREAKER, CIRCUIT;MAGNETIC BLOW OUT AIRBREAKER, CIRCUIT; TYPE MAGNETIC BLOW OUT AIR, POTENTIAL6 KV, CURRENT 1250 A; 50-60HZ. To be sold as a single lot.

        Newcastle, South Africa
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      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.