Fluke 1625 FE 1625 Users Manual - Page 83
Earthing Resistance, Type of, Soil Re, sitivity, Earthing Rod m, Depth
 |
View all Fluke 1625 manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 83 highlights
Earthing Resistance Principle of Operation Type of Soil Soil Resitivity [ρE] Earthing Resistance (Ω) Earthing Rod m Depth Earthing Strip m Ω.m 3 6 10 5 10 20 Moist 30 humus soil, 10 5 3 12 6 3 moor soil, swamp Farming 100 soil,loam y and clay soils 33 17 10 40 20 10 Sandy 150 clay soils 50 25 15 60 30 15 Moist 300 sandy soil 66 33 20 80 40 20 Dry sandy soil 1000 330 165 100 400 200 100 Concrete 400 1 : 5* 160 80 40 Moist 500 gravel 160 80 48 200 100 50 Dry gravel 1000 330 165 100 400 200 100 Stoney 30000 1000 500 300 1200 600 300 soil Rock 107 - - - - - - * for concrete mixtures 1 : 7 the values have to be increased by 24 % 75
-
1 -
2
-
3
-
4
-
5
-
6
-
7
-
8
-
9
-
10
-
11
-
12
-
13
-
14
-
15
-
16
-
17
-
18
-
19
-
20
-
21
-
22
-
23
-
24
-
25
-
26
-
27
-
28
-
29
-
30
-
31
-
32
-
33
-
34
-
35
-
36
-
37
-
38
-
39
-
40
-
41
-
42
-
43
-
44
-
45
-
46
-
47
-
48
-
49
-
50
-
51
-
52
-
53
-
54
-
55
-
56
-
57
-
58
-
59
-
60
-
61
-
62
-
63
-
64
-
65
-
66
-
67
-
68
-
69
-
70
-
71
-
72
-
73
-
74
-
75
-
76
-
77
-
78 -
79 -
80 -
81 -
82 -
83 -
84 -
85 -
86 -
87 -
88 -
89
-
90
 |
 |
Earthing Resistance
Principle of Operation
75
Earthing Resistance (
Ω
)
Type of
Soil
Soil Re-
sitivity
[
ρ
E
]
Earthing Rod m
Depth
Earthing Strip m
Ω
.m
3
6
10
5
10
20
Moist
humus
soil,
30
10
5
3
12
6
3
moor soil,
swamp
Farming
soil,loam
y and
clay soils
100
33
17
10
40
20
10
Sandy
clay soils
150
50
25
15
60
30
15
Moist
sandy
soil
300
66
33
20
80
40
20
Dry
sandy
soil
1000
330
165
100
400
200
100
Concrete
1 : 5
*
400
160
80
40
Moist
gravel
500
160
80
48
200
100
50
Dry
gravel
1000
330
165
100
400
200
100
Stoney
soil
30000
1000
500
300
1200
600
300
Rock
10
7
-
-
-
-
-
-
* for concrete mixtures 1 : 7 the values have to be increased by 24 %