Earth resistance clamp is a breakthrough from traditional tester. Neither the supplementary earth leads nor the break earth equipment is necessary. Ground resistance result can be get safe and fast only by clamping the ground line.
Additionally, current testing is also provided. High sensitivity clamp meter can measure the leakage current to 1mA, neutral current to 30A RMS. It is especially important for testing ground circuit with strong interferecnce and ripple that will influence the electrical quality.
Besides industrial electronic equipment. It is also widely used in the field of electric power distribution, telecommunication and architectural ground.