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Used test in Beijing, China

  • DTR8510 Transformer Turns Ratio Tester

    DTR8510 Transformer Turns Ratio Tester

    • Manufacturer: 法国/CA

    Introduction: Warning display of faults such as wrong wire connection, polarity reversal, open circuit and short circuit, the instrument is easy to connect and easy to set up; no calibration or balancing required...

    Beijing, China
  • GF1060 Laboratory Current Transformer Test

    GF1060 Laboratory Current Transformer Test System

      The GF1060 current transformer test system is suitable for the calibration of traditional electromagnetic current transformers and electronic current transformers with small voltage output. The GF1060 current tra...

      Beijing, China
    • Gf1060M Miniature Current Transformer Test

      Gf1060M Miniature Current Transformer Test Equipment

        The GF1060M miniature current transformer test equipment is developed by GFUVE GROUP, which integrates a high precision 0.

        Beijing, China
      • T-213S Three Phase Transformer Dc

        T-213S Three Phase Transformer Dc Resistance Test Equipment

          T-213S three phase transformer dc resistance test equipment with three channel functions can test transformer, mutual inductor, reactor, dc resistance of motor and perceptual load. resistance of motor and percept...

          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
              • Portable precision current transformer testing

                Portable precision current transformer testing ct pt analyzer

                  GF1061 portable ct pt 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 pri...

                  Beijing, China
                • GF1061R instrument transformer turns ratio

                  GF1061R instrument transformer turns ratio test set

                    GF1061R portable instrument transformer turns ratio test set is mainly used for field or lab testing of current transformers and voltage transformers, it can fully automatic test CT and PT turns ratio, display ph...

                    Beijing, China
                  • T-218 Automatic Portable Transformer Demagnetization

                    T-218 Automatic Portable Transformer Demagnetization Tester

                      The T-218 is a fully automatic transformer demagnetization tester which performs three-phase transformer and single-phase and three-phase power transformers demagnetization. Transformer magnetic core demagnetizat...

                      Beijing, China
                    • GF106FY Current transformer & voltage

                      GF106FY Current transformer & voltage transformer burden box

                        The GF106FY-1 Current transformer burden box is applicable to current transformer accuracy testing bench as secondary load of test object CT, its series connection to the secondary winding of test object CT.

                        Beijing, China
                      • T-213 Transformer winding DC resistance

                        T-213 Transformer winding DC resistance tester

                          T-213 test instrument can test transformer, mutual inductor, reactor, dc resistance of motor and perceptual load. Instrument is small in size, light weight, strong function, easy operation, designed for productio...

                          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
                          • GF1061CVT portable capacitor voltage transformer

                            GF1061CVT portable capacitor voltage transformer tester

                              GF1061CVT portable capacitor voltage transformer tester is mainly used for field or lab testing, it applied different frequency test power source, finish the measurements (M) and protection (P) class capacitor vo...

                              Beijing, China
                            • GF1061PT portable voltage transformer tester

                              GF1061PT portable voltage transformer tester

                                The GF1061PT voltage transformer tester is the first portable test equipment (4.8kg) which offers highly accurate voltage transformer tests. This allows to use GF1061PT not only for electrical performance checks ...

                                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.