Multifunction measuring device TRAN-203

resistanceindustrialtransformer

The TRAN-203 series of instruments are designed to measure the turns ratio and winding resistance of three-phase and single-phase transformers. Via its user-friendly interface, the TRAN instrument/s provide a fast and accurate assessment of key transformer parameters. TURNS RATIO MEASUREMENT The TRAN-203 employs elements of performance tests specified in the ANSI/IEEE C57.12.90 standard. With market leading accuracy the TRAN-203 has a very wide ratio measurement capability with a precision of 0.08 %. Other features include the measurement of core excitation current, phase angle, polarity, ratio error and magnetic balance. Even though TRAN-203 has a three-phase cable configuration, users can also perform single-phase transformer tests. TRAN-203 can detect vector groups automatically. The instrument has a wide operating range for use on equipment such as high excitation current transformers and high-power potential transformers in substations. The instrument can generate 1V, 4V, 10V, 40V, 100V, 250V AC test voltages. WINDING RESISTANCE MEASUREMENT Applying up to 20 Amps of direct current allows the TRAN -203 series to measure the resistance of three phase transformer's primary and secondary windings automatically. TRAN-203 instrument/s are designed to measure the resistance of the primary and secondary transformer windings without the need to disconnect and reconnect the test cables. Starting at 0.1 μΩ, the TRAN-203 series can measure up to 100,000 Ω of resistance. The instrument can control OLTC. The TRAN-203 series can demagnetise the transformer to mitigate the build-up of remanence or residual magnetism due to the testing