1 . Quickly and accurately complete the measurement of positive sequence capacitance, positive sequence impedance, zero sequence capacitance, zero sequence impedance and other parameters of the line, and also can measure the mutual inductance and coupling capacitance between lines (the line DC resistance is measured by a special YTLRT line DC resistance tester);
2. Strong anti-interference ability, can accurately measure under the condition that the ratio of heterodyne signal to power frequency interference signal is 1:10;
3. Simple external wiring, only need to connect the down lead of the tested line once to complete all line parameter measurements;
4. The instrument uses an industrial computer as the core, realizing the integration of test power supply, instruments, and calculation models, condensing a truckload of equipment into one instrument. It uses TFT true color LCD output, touch screen operation, and a panel Chinese character micro printer to print results, making operation very simple;
5. The test process is fast. The YTC6450 transmission line power frequency parameter test system automatically completes test mode control, voltage step-up and step-down control, data measurement and calculation, and prints the measurement results. The measurement of one sequence parameter can be completed in about one and a half minutes, shortening the test time and greatly reducing the workload. The workload of two hours by traditional methods can be completed within 30 minutes;
6. High measurement accuracy. The instrument itself provides heterodyne power supply close to power frequency (47.5Hz and 52.5Hz), easily separating power frequency and clutter interference, effectively achieving high-precision measurement of small signals;
7. Only one wiring connection is needed to complete the measurement of all sequence parameters, thoroughly solving the problems existing in current test methods such as cumbersome test wiring switching, interference, stability, and accuracy.
