Energy » Transformers » Current Transformer (CT) » Zhejiang

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Used technical specifications in Zhejiang, China

  • Transformer of Foil Winding Machine

    Transformer of Foil Winding Machine with 0-30 N/Min Winding Speed

    • Manufacturer: En-source

    Transformer of foil winding machine with 0-30 N/Min Winding Speed Company Profile Our company has been specializing in the development and production of transformer specific equipment since 1984. Our products inc...

    Zhejiang, China
  • Prj Foil Winding Machine of

    Prj Foil Winding Machine of Transformer Production Line

    • Manufacturer: En-source

    PRJ foil winding machine of transformer production line Company Profile Our company has been specializing in the development and production of transformer specific equipment since 1984. Our products include BW co...

    Zhejiang, China
  • Current Transformer Corrugation Fin Production

    Current Transformer Corrugation Fin Production Line

    • Manufacturer: En-source

    Glazed tile forming machine 1. The main technical parameters of mechanical parts: 1) Forming method: sequence and synchronous deformation mode (first to form the middle of the stiffener to force the release to bo...

    Zhejiang, 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.