Sonel MPI-540 Brief User Manual

MPI-540 ● MPI-540-PV – BRIEF USER MANUAL
17
3.4 Resistance-to-earth
WARNING
 Measurement of resistance to earth may be carried out if voltage of interfer-
ences does not exceed 24 V. Voltage of interferences is measured up to the
level of 100 V.
 Over 50 V it is signalled as hazardous. The meter must not be connected to
voltages exceeding 100 V.
Select item R
E
.
3.4.1 Earth resistance measurement with 3-pole method (R
E
3P)
The three-pole measuring method is the basic type of resistance to earth measurement.
Disconnect earth electrode being tested from the installation of the building.
 Drive the current electrode into the ground and connect to the H socket of the meter.
 Drive the voltage electrode into the ground and connect to the S socket of the meter.
 The earth electrode being tested should be connected to E socket of the meter.
 It is recommended that the tested earth electrode as well as H and S electrodes should be lo-
cated along one line and at relevant distances, in accordance with the rules of earth measure-
ments.
 Select the 3P option in the
measurement menu.
 Select other settings and per-
form the measurement using the
START button.

Sonel MPI-540 Specifications

General

Brand	Sonel
Model	MPI-540
Category	Measuring Instruments
Language	English