What is Working Principle of Earth Resistance Tester Need Complete Information How Tester Find Impedance of Supply System.?

It would be a lot of trouble for me to try to explain the working principle of ground resistance tester since my English is no so good but fortunately I can give you the right internet address so you can download the exact information you need: www.dranetz-bmi.com/pdf/groundprinciples.pdf

Alexis

Havana, Cuba