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Article | REF: R1040 V1

Electrical safety testers

Authors: André LECONTE, Bernard KANTOROWSKI

Publication date: December 10, 2004

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5. Loop resistance measurement

5.1 Purpose of the measurement and principles of the methods used

There are three main applications for loop resistance measurements:

  • indirect measurement of a local land ;

  • evaluation of a short-circuit current ;

  • measurement of an earth connected to an earth network.

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5.1.1 Local ground measurement

The schematic diagram of the measurement is shown in figure

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