Metrix MX 435D

Chapter II
Digital Earth Tester
47
EARTH MEASUREMENTS - TYPICAL INFLUENCE OF ROD RESISTANCE
20 Ohm Range
0
5
10
15
20
25
0 2 4 6 8 10 12 14
kOhm
%
Ra = 0.3 Ohm
Ra = 10 Ohm
2000 Ohm Range
-5
0
5
10
15
20
25
0 102030405060
kOhm
%
Ra = 30 Ohm
Ra = 1000 Ohm