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Used data analyzers in Chongqing, China

  • ACP Portable Electrical Current Transformer

    ACP Portable Electrical Current Transformer Test,CT/PT Analyzer

      ACP portable current transformer test kit designed for analyzing current transformers and voltage transformers of protection or measurement use, which is suitable for laboratory and on-site test. Application:ACP ...

      Chongqing, China
    • Current & Potential Transformer CT

      Current & Potential Transformer CT PT Analyzer CT Meter

      • Manufacturer: Gold

      GDVA-405 Current & Potential Transformer CT PT Analyzer CT Meter Product Description GDVA-405 Current & Potential Transformer CT PT Analyzer CT Meter is a comprehensive CT and PT analyzer. GDVA-405 Current & Pote...

      $10 USD
      Chongqing, China
    • Gdva-405 Popular Multifunctional Instrument Transformer

      Gdva-405 Popular Multifunctional Instrument Transformer CT PT Tester

      • Manufacturer: CHONGQING GOLD

      GDVA-405 Popular Multifunctional Instrument Transformer CT PT Tester Product Description GDVA-405 CT PT Tester is a comprehensive CT and PT analyzer. It's constant voltage and current is highly stable. DSP system...

      Chongqing, 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.