Скачать или смотреть What is Earth Resistance? How to measure it?

Earthing is a useful technique to avoid electrical accidents, it enables leakage current to flow away safely.

Earth resistance is the resistance of the soil that is occurred during the passage of an electric current. It is offered by the earth electrode to the flow of current into the ground. Therefore, it is crucial to measure the resistivity during the design of any earthing installations.

Our video helps you understand Earth resistance and six basic test methods to measure the earth resistance in detail.

0:00 Introduction
1:01 What is Earth Resistance?
1:30 How is Earth Resistance measured?
2:10 Factors affecting Earth Resistance
3:15 Six Methods of Testing
3:44 Three terminal methods
5:48 Four-point method (Wenner method)
6:45 Slope method
7:23 Star delta method

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