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Earth/Ground Tester
Procedure of Measurements
33
To keep the instrument as simple as possible at the time of delivery, all special
functions, such as LIMIT input, BEEPER programming, measurement of
earthing impedance (R
*
) etc, are not activated at delivery. They can be acti-
vated with personalized user's code (see "Changing of all Pre-set Data with
Personalized Code"). Refer to Figure 8.
G
I
E
Umeas.
E
U
E
RE
RS
S
S
I
H
H
R
H
edw011.eps
Figure 8. Earthing Resistances Measurement - Method
3-pole/4-pole Measurement of Earthing Resistance
This measuring function measures earthing and earth dissipation resistances of
single earth electrodes, foundation earth electrodes and other earthing systems
by using 2 earth spikes. See Figure 9.