Fluke 1625 - Page 85

Earthing Resistance
Principle of Operation
77
month
Dec.
0
1
2
34
5
6
8
7 9 10 11 12
0
4
8
12
16
20
24
28
Earth resistance R
E
July
Jan.
edw055.eps
Temporal change of the earthing resistance of a conductor earth electrode
(earth strip, earth cable).
14
month
0
1
2
3
4
5
6
7
8
9
10 11
12
0
2
4
6
8
10
12
Dec.
July
Jan.
Earth resistance R
E
edw056.eps
Temporal change of the earthing resistance of a buried earth electrode (earth
pipe, earth plate)