1. The relay protection tester can test various AC/DC, current, voltage, intermediate, self-holding, signal and other single relays and the whole group of relay protection screens, and can test the pull-in voltage (current) value, release voltage (current) value of various relays, and the pull-in time and disconnection time of various contacts (normally open, normally closed, conversion, delay). It can automatically test three times and store the number, and automatically calculate and print the return coefficient of the three mean values, The test results can be displayed and printed repeatedly.
2. Various parameters of reclosing relay can be easily tested.
3. With the function of frequency and phase measurement, it can measure the frequency of current and voltage (display the time of one cycle, that is, the cycle) and the phase difference (time) between the two signals.
4. There are two independent channels, which are insulated from other outputs of the machine. It can easily measure the live contact and meet the online test of the relay. The wiring is simple and safe.
5. It adopts a precise timing benchmark (10 microseconds) and a counter up to 100 hours, so it can be used separately as a precision millisecond meter to replace the traditional stopwatch.
The relay protection tester adopts a high-speed high-performance digital signal processor with fast operation speed and wide transmission frequency band. It can generate a high-density fitting sine wave of 360 points per cycle for the fundamental wave. This is the highest level of the same kind of output mode at present. The waveform has high fidelity and low distortion, especially when the harmonic output is used, even for the 6th harmonic and 300Hz, it can reach the high density of 60 D/A per cycle.