MI 3101 EurotestAT:
Technical specifications
96
Rp max. ............................................ 100 R
E
or 50 k
(whichever is lower)
Automatic test of probe resistance.......... yes
Additional error
at 3 V voltage noise (50 Hz)..............
(5 % of r10 digits)
Automatic test of voltage noise ......... yes
Noise voltage indication threshold .... 1 V (<50
, worst case)
Open-terminal test voltage................ 40 V
AC
Test voltage frequency...................... 125 Hz / 150 Hz
Short-circuit test current.................... < 20 mA
Specific earth
resistance
Measuring range (
m)
Resolution (
m)
Accuracy
0.0
99.9
0.1
100
999
1
1.00k
9.99k
0.01k
10.0k
99.9k
0.1k
>100k 1k
See accuracy note
Measuring range (
ft)
Resolution (
ft)
Accuracy
0.0
99.9
0.1
100
999
1
1.00k
9.99k
0.01k
10.0k
99.9k
0.1k
>100k 1k
See accuracy note
Principle:
= 2·
·distance·Re,
with Re as measured resistance in 4-wire method.
Accuracy note:
Accuracy of the specific earth resistance result depends on measured resistance
Re and is as follows:
Measuring range (
)
Accuracy
1.00
1999
5 % of measured
2000
19.99k
10 % of measured
>20k
20 % of measured
Additional error
See
Earth resistance three-wire method.
8.9
2
line/loop impedance
8.9.1 High precision line impedance
Measuring range according to EN61557 is 5.0
1999 m
Measuring range (m
) Resolution
(m
)
Accuracy
0.1
199.9
0.1
200
1999
1
(5 % + 1 m
)
