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New Current Transformer (Ct) in Beijing, China

  • GF106 ct pt tester

    GF106 ct pt tester

      GF106 CT tester is a current transformer test equipment specially designed for current transformer characteristic test and with additional PT test functions for reference test.

      Beijing, China
    • TEST-903 electrical 3000A primary current

      TEST-903 electrical 3000A primary current injection test equipment

        TEST-903 3000A primary current injection test equipment adopts 32bit ARM chip to control the output process and large capacity of toroidal transformer. It can output up to 3300A, timer from 0 to 999.

        Beijing, China
      • TEST-200 200A portable primary current

        TEST-200 200A portable primary current injection test kit

          TEST-200 200A primary current injection test kit adopts 32bit ARM chip to control its output process and large capacity of toroidal transformers. It is equipped with current meter; It can show primary current val...

          Beijing, China
        • TEST-901 large current 1000a primary

          TEST-901 large current 1000a primary current injection test set

            TEST-901 primary current injection test set adopts 32bit ARM chip to control its output process and large capacity of toroidal transformers. It is equipped with LCD display and current meter; it can show primary ...

            Beijing, China
          • GF106T portable ct pt analyzer

            GF106T portable ct pt analyzer

              GF106T ct analyzer is mainly used for field testing of Protection class ct and PT.

              Beijing, China
            • GF1061CT Portable ct analyzer with

              GF1061CT Portable ct analyzer with printer

                GF1061CT portable CT analyzer is mainly used for field or lab testing, it can finish the measurements (M) and protection (P) class CT, PT and TYP class CT. Adopt 7 inch touch TFT LCD, self-equipped mini type prin...

                Beijing, China
              • LZCK720-10 resin measuring or protection

                LZCK720-10 resin measuring or protection split core dry type cTs

                • Manufacturer: Resina

                The model LZCK720-10 split core ct is a ring type resin casting split core current transformer. Some clients also called it as TTCC.

                Beijing, China
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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.