Energy » Transformers » Current Transformer (CT) » Shanghai

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Used customized in Shanghai, China

  • Transformer (Transformer)

    Transformer (Transformer)

      ※ Product Overview Dry Isolation Transformer , with moisture resistance, easy maintenance and other advantages, can deeply reach the load center, suitable for power transmission and distribution sites such as sub...

      Shanghai, China
    • Industrial Transformer BX1-630 AC Arc

      Industrial Transformer BX1-630 AC Arc Welding Machine welder

      • Manufacturer: Unknown

      Products Description More Product Product Applications Shanghai Fengling Welds Co., Ltd Founded in 2000, Fengling Welds is a comprehensive enterprise integrating the design, production, sales and service for weld...

      $550 USD
      Shanghai, China
    • Transformer Box

      Transformer Box

      • Phase type: Three-phase

      Shanghai Metal Corporation is a leading Transformer Box manufacturer and supplier. Shanghai Metal Corporation was established in 2004 year, headquarters is located at Shanghai China, with branch factory and branc...

      Shanghai, China

    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.