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The device displays the following parameters:
R
, U
, I
, U-Act (U
E
S-E
H-E
To measure the resistances of auxiliary electrodes H (Z) and S (Y), or if the resis-
tance of the electrodes is too high (see § 10.1), start the measurement with a long
press of the START/STOP button.
R
, R
will be displayed.
H
S
NOTE: Repeat the process at 52% and at 72% for the S electrode.
5.4.2
Full Method
A more thorough measurement can be obtained by taking measurement by mov-
ing the S (Y) auxiliary electrode every 10% between H (Z) and E (X) and plotting
the results. A distinct plateau should result as shown below.
R10
0
10
Take the average of the 3 or 4 readings on the
plateau to obtain the earth electrode resistance.
Ground Resistance Tester Model 6472
and its frequency, U
H-E
> 2s
R30 R40
R20
20
30
40
% H - E
and its frequency).
S-E
EARTH
H
S
E
R70
R50
R60
50
60
70
R =
Ω
kΩ
kΩ
AUTO
R90
R80
80
90
100
R40 + R50 + R60 + R70
4
33
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