Influence Of The Auxiliary Electrodes Upon Earth Resistance Measurements For Earth Resistivity Function (Ρ); Influence Of The Auxiliary Electrodes Upon Earth Resistance Measurements By Means Of The Impulse Method (R E 4P ); Influence Of The Interference Current I; E 3P+C - Sonel MRU-200 User Manual
Earth resistance meter
Table of Contents
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R
E
≤ 500 Ω and R
R
H
0,000 Ω
> 500 Ω or
R
H
> 500 Ω or
...3.999 Ω
R
S
R
and R
H
≤ 1 kΩ and R
R
H
R
H
>3.999 Ω
R
S
R
and R
H
[Ω], R
[Ω] and R
R
E
S
H
10.2.4 Influence of the auxiliary electrodes upon earth resistance measure-
ments for earth resistivity function (ρ)
[Ω], R
[Ω] and R
R
E
S
H
10.2.5 Influence of the auxiliary electrodes upon earth resistance meas-
urements by means of the impulse method (R
≤ 150 Ω
R
H
> 150 Ω
R
H
[Ω] and R
[Ω] are values which are displayed by the device.
Z
E
H
10.2.6 Influence of the interference current I
resistance measurement for method R
The MRU-200 / MRU-200-GPS meter may perform a measurement, if the value of the interfer-
ence current does not exceed 3 A RMS and the frequency complies with the value set in the MENU.
≤50
>50
If the interference current exceeds 3 A the possibility of measurement is blocked.
R
,R
H
S
≤ 500 Ω
S
(
> 500 Ω
S
≤ 1 kΩ
S
> 1 kΩ or
> 1 kΩ or
(
> 1 kΩ
S
[Ω] are values which are displayed by the device.
R
R
30000
H
S
(
R
E
[Ω] are values which are displayed by the device.
R
Z
H
E
0.0...199 Ω
0,. ...4.9 Ω
5.0...199 Ω
R
U
E
wy
25 V
50 V
25 V
50 V
MRU-200 ● MRU-200-GPS – USER MANUAL
Additional uncertainty for U = 50 V [%]
within the range of the accuracy
R
S
200
6
R
10
R
S
E
within the range of the accuracy
R
S
200
6
R
10
R
S
E
Uncertainty [%]
7
3
2 ,
10
4
Uncertainty [%]
within the range of the accuracy
R
(
((
R
Uncertainty []
5 (
2 (
(
70
(
50
2
R
3
H
5
10
1 (
R
200
H
2
R
3
H
5
10
R
200
H
2
4
10
R
R
H
S
4P )
E
100
2
H
4
10
)
Z
E
3
100
)
7
10
)
H
upon the result of the earth
Z
3P+C
E
R
2
3
10
I
)
E
zakl
R
2
3
5 ,
10
I
)
E
zakl
R
2
2
6
10
I
)
E
zakl
R
2
2
6
10
I
)
E
zakl
1
4
)
R
4
10
)
H
R
E
4
R
15
10
)
H
2
)
55
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