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Test methods and set-up
Four terminal ART test lead set-up
C1
CA
T IV 300V
P1
P2
C2
E
ES
S
H
I
V
E
X
Y
V
MVC1010
MVC1010
MCC1010
I
C1 (E)
P1 (ES)
C2 (H)
P2 (S)
100%
62%
Three terminal test lead set-up
G
F
V
I
C1
E
E/X
CA
T IV 300V
CA
T IV 300V
CA
T IV 300V
CA
T IV 300V
Y
V
P1
ES
P2
S
C2
H
15 m to 25 m
15 m to 25 m
P1
P2
C2
Important:
The current stake / pin, potential spike and earth / ground electrode must be placed in a straight line.
Important:
When running test leads out to each remote stake / pin, take care not to lay them close to each
other. This is to minimise the effect of mutual inductance.
Determine the earth electrode test lead resistance
The earth electrode test lead resistance can be determined separately.
1. Remove the test lead from the earth electrode and connect to the
C2
and
P2
terminals.
2. Press test.
The lead resistance can then be deducted from the earth resistance measurements.
This procedure is not required if the
C1
and
P1
terminals are connected by separate test leads.
Note:
The result for a three terminal test will include the resistance of the test lead used to connect to the earth
electrode under test. The resistance can be measured by connecting the lead to the P1(X) and P2(Y) terminals,
selecting a 2P test and pressing the test button. This lead resistance can be subtracted from the earth resistance
measurements.
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