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Sonel MPI-540 User Manual

Sonel MPI-540
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MPI-540 USER MANUAL
53
3.5.3 Measurement of resistance to earth using 4P method
Four-pole method is recommended for use in the measurement of earth resistance of very small
values. It allows user to eliminate the influence of resistance of test leads on the measurement re-
sults. It is also suitable for determining the resistivity of the soil. However, it is recommended that the
dedicated function should be used for this measurement (section 3.6).
Disconnect the tested earth electrode from the installation of the facility.
Drive the current electrode into the earth and connect to the H socket of the meter.
Drive the voltage electrode into the earth and connect to the S socket of the meter.
The earth electrode being tested should be connected to E socket of the meter with the
lead.
ES socket should be connected to the tested earth electrode below E lead.

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Sonel MPI-540 Specifications

General IconGeneral
BrandSonel
ModelMPI-540
CategoryMeasuring Instruments
LanguageEnglish

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