Sonel MIC-10 - 11.3.2 RCONT Uncertainties

MIC-10 / MIC-30 – USER MANUAL
30
Test range according to IEC 61557-2 for V
N
= 1000V: 1000k to 100.0G
Display range
for V
N
= 1000V
Resolution
Accuracy
0.0 to 999.9 k
0.1 k
 (3% m.v. + 8 digits)
1.000 to 9.999 M
0.001M
10.00 to 99.99M
0.01 M
100.0 to 999.9 M
0.1 M
1.000 to 9.999 G
0.001 G
 (4% m.v. + 6 digits)
10.00 to 99.99 G
0.01 G
100.0 G
0.1 G
 Note: For insulation resistance below R
ISOmin
there is no accuracy specified because the meter
works in the current limit mode in accordance with the following formula:
nomISO
nomISO
ISO
I
V
R min
where:
R
ISOmin
- minimum insulation resistance measured without limiting the current
V
ISOnom
- nominal test voltage
I
ISOnom
- nominal current (1mA)
Measurement of leakage current
Display range
Resolution
Accuracy
0 to I
Lmax
mA, μA, nA
Calculated basing on resistance
measurements
 I
Lmax
– maximum current at short circuit of leads,
 resolution and units result from the measurement range of individual insulation resistance.
Measurement of capacitance
Display range
Resolution
Accuracy
1 to 999nF
1nF
 (5% m.v. + 10 digits)
1.00 to 9.99μF
0.01μF
 Measurement of capacitance is made only during R
ISO
measurement.
 For measurement voltages below 100V and when measured resistance is below 10MΩ, the
measurement error is not specified.
Low-voltage continuity and resistance measurement
Measurement of continuity of protective conductors and equipotential bondings with 200 mA
current
Measuring range according to IEC 61557-4: 0.10 to 1999
Display range
Resolution
Accuracy
0.00 to 19.99
0.01
(2% m.v. + 3 digits)
20.0 to 199.9
0.1
200 to 1999
1
(4% m.v. + 3 digits)
 Voltage at open terminals: <8V
 Output current at R < 2: I > 200mA
 Compensation of test leads resistance
 Current flowing unidirectionally
 Current flowing bidirectionally, average resistance is displayed