GSC60
EN - 62
6.7. EARTH: MEASUREMENT OF EARTH RESISTANCE
The instrument allows performing the measurement of earth resistance of an installation in
the following ways:
Measurement of earth resistance with 3-wire or 2-wire voltammetric method
Measurement of ground resistivity () with Wenner 4-wire method
Measurement of resistance of individual rods without disconnecting them by means of
the optional clamp T2100
6.7.1. 3-wire or 2-wire earth measurement and 4-wire ground resistivity
The measurement is carried out in compliance with standards IEC/EN61557-5.
CAUTION
The instrument can be used for measurements on installations with
overvoltage category CAT III 300V to earth with a maximum voltage of
600V between inputs. Do not connect the instrument to installations with
voltages exceeding the limits indicated in this manual. Exceeding these
limits could result in electrical shocks to the user and damage to the
instrument.
Always connect the measuring cables to the instrument and to the alligator
clips with the accessories disconnected from the system.
We recommend holding the alligator clip respecting the safety area created
by the hand protection (see § 4.2).
If the length of the cables supplied is not suitable for the installation under
test, you can create your own extensions following the indications in §
12.12.
Fig. 27: Three-wire earth resistance measurement
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