The main features of the YTC6450 transmission line power frequency parameter test system are:
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 can also measure mutual inductance and coupling capacitance between lines (line DC resistance is measured using a dedicated YTLRT line DC resistance tester);
2 Strong anti-interference capability, able to measure accurately 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, integrating the test power supply, instruments, and calculation model into one, condensing a truckload of equipment into a single instrument. It uses TFT true color LCD output, touch screen operation, and a panel with a Chinese character micro printer to print results, making operation very simple;
5 Fast test process, the instrument 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 test time and greatly reducing workload. Within 30 minutes, it can complete the workload that traditional methods take two hours to finish;
6 High measurement accuracy, the instrument itself provides a 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 testing methods such as cumbersome test wiring switching, interference, stability, and accuracy.
