Specifications
Section 3
Page 68
10k ft to 100k ft 10.0 ft
1 to 99 m 0.1 m
100 to 999 m 1.0 m
1000 to 30000 m10.0 m
Temperature Sensor: 0° to 140° F1° F+
2° F
–18° to 60° C.5° C+
1° C
Noise Immunity: 7 VAC limit for all frequencies
Note:
1
See figures below for accuracies. All resistance to fault
measurement accuracies have an added factor of
(2 x 10
-8
) RF ohms.
2
Single pair hook-up measurement accuracy is strictly
dependent on whether the reference pair is exactly the
same electrical length as the faulted pair. Accuracies are
doubled for single pair hook-up.
3
Accuracy depends on correct temperature setting as well
as gauge accuracy of copper. The temperature can be
read by the built-in sensor or can be operator-entered.
2 –
-
-
-
-
1.5
–
-
-
-
-
1 –
-
-
-
-
.5 –
-
-
-
-
0 –
Accuracy in ohms for Various Fault Resistances
Maximum
Error in
ohms
Resistance to Strap in ohms
21020404
20 Mohms
10 Mohms
<1 Mohm
30 Mohms
100 400 10002001
0
5
10
15
20
25
30
35
40
0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000
30 Mohms
20 Mohms
10 Mohms
< 1 Mohm
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