Grounding Resistance Tester HYDW-Ⅲ

Features
1) The equivalence of measurement is better than that of industrial frequency measurement.
2) Adopting AC constant current and voltage pure heterodyne power supply, automatic adjustment of direct measurement without setting parameters, and strong resistance to ground voltage interference. The instrument uses heterodyne method of measurement, collecting the frequency of the site with modern software and hardware filtering technology, test data is stable and reliable. No need for power outage detection.
3) High accuracy. Specially designed to measure the grounding impedance is very small large ground network.
4) With broken line display function to avoid wrong measurement.
5) Simple operation. Full Chinese menu-based operation, directly display the measurement results.
6) The instrument is small in size and light in weight, easy to carry.