32
Ground Resistance Tester Model 6471
taking care not to form loops, and to avoid placing the cables near or parallel to
metallic conductors (cables, rails, fences, etc.).
Connect the cables to terminals
H (Z)
and
S (Y)
(red and blue respectively); dis
-
connect the earth strap from the rod under test, then connect terminal
E
(green) to
the rod or electrode system to be tested.
3.
Press the
2nd
button, then the
DISTANCE
button. The "hundredths" will blink.
AUTO
=
m
m
H
S
E
d
A
=
DISTANCE
Ω
Ω
4.
To modify the hundredths (of meters or feet), press the ▲ button until the
desired digit is displayed (0-9).
5.
To select and modify the tens, press the ► button and then the ▲ button until
the desired digit is displayed (0-9).
6.
To select and modify the units and tenths of a unit, press the ► button and
then the ▲ button until the desired digits are displayed (0.0-9.9).
7.
To terminate the programming of distance, press the
2nd
button and then the
DISTANCE
button.
It is also necessary to program distance
A
. This is done in the same way as for
distance
d
.
8.
Start the measurement by pressing the
START/STOP
button.
AUTO
=
m
m
H
S
E
d
A
=
EARTH
AUTO
H
S
E
mA
mV
Ω
9.
To display the measurement parameters, press
DISPLAY
several times.
The device displays the following parameters:
R
E
, U
S-E
, I
H-E
, U-Act (U
H-E
and its frequency, U
S-E
and its frequency).
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