METREL MI 3295 - 10.4 Specific earth resistance (MI 3295 S); 10.5 Potential (MI 3295 M)

MI 3295 Step Contact Voltage Measuring System Technical specifications
47
Test signal frequency ...................................... 55 Hz
Influence of probe resistance: ≤ (10 % of reading + 10 digits)
(Rc, Rp)
max
= (10  + 100 R) or 2 k (whichever is lower)
Automatic test of probe resistance.......... yes
Automatic detection of voltage noise.
Test terminals:
S, ES, C1/H, C2/E
Station
10.4 Specific earth resistance (MI 3295S)
Measuring range
Resolution
Accuracy
0.00 … 9.99 Ωm
0.01 Ωm
Calculated value, consider
accuracy of Resistance to earth
function.
10.0 … 99.9 Ωm
0.1 Ωm
100 … 999 Ωm
1 Ωm
1.00 … 9.99 kΩm
0.01 kΩm
10.0 … 99.9 kΩm
0.1 kΩm
Measuring range
Resolution
Accuracy
0.00 … 9.99 Ωft
0.01 Ωft
Calculated value, consider
accuracy of Resistance to earth
function.
10.0 … 99.9 Ωft
0.1 Ωft
100 … 999 Ωft
1 Ωft
1.00 … 9.99 kΩft
0.01 kΩft
10.0 … 299.9 kΩft
0.1 kΩft
Wenner method principle with equal distances between test probes:
 = 2··distance·R.
10.5 Potential (MI 3295M)
Measuring range U
m
Resolution
Accuracy
0.01 … 19.99 mV
0.01 mV
(2 % of reading + 2 dig)
20.0 … 199.9 mV
0.1 mV
200 … 1999 mV
1 mV
2.00 … 19.99 V
0.01 V
20.0 … 59.9 V
0.1V
Calculated measuring
range U
Resolution
Accuracy
0.01 … 19.99 mV
0.01 mV
calculated value*
20.0 … 199.9 mV
0.1 mV
200 … 1999 mV
1 mV
2.00 … 19.99 V
0.01 V
20.0 … 199.9 V
0.1 V
200 … 999 V
1 V
1.00 … 9.99 kV
10 V
*Displayed Potential is obtained on base of calculation:
U
S
=U
m ∙
I
fault
/I
gen