Working principle: The digital ground resistance tester abandons the traditional manual hand-cranked power generation method, adopts advanced medium and large-scale integrated circuits, and applies DC/AC conversion technology to combine three-terminal and four-terminal measurement methods into one new type of ground resistance tester.
Scope of Application
This instrument is suitable for measuring the ground resistance of various devices in departments such as electric power, post and telecommunications, railways, communications, and mining, as well as measuring the resistance of low-resistance conductors; it can also measure soil resistivity and ground voltage.
Instrument Features
Structurally, high-strength aluminum alloy is used as the casing; in the circuit, to prevent power frequency and radio frequency interference, a phase-locked loop synchronous tracking detection method is adopted, combined with a switched capacitor filter, giving the instrument good anti-interference capability.
DC/AC conversion technology is used to convert DC into low-frequency constant current for easy measurement.
Allow the auxiliary ground resistance to vary between 0~2KΩ (RC) and 0~40KΩ (RP) without affecting the measurement results.
