MIC-05s1
– USER MANUAL
59
10 Technical specifications
10.1 Basic data
The abbreviation "m.v." used in the specification of basic uncertainty denotes a standard measured
value
AC/DC voltage measurement
Display range
Resolution
Basic uncertainty
0.0 V to 29.9 V
0.1 V
(2% m.v. + 20 digits)
30.0 V to 299.9 V
0.1 V
(2% m.v. + 6 digits)
300 V to 750 V
1 V
(2% m.v. + 2 digits)
Frequency range: 45 to 65Hz
Measurement of insulation resistance
Test voltage accuracy (R
obc
[
]
1000*V
N
[V]): -0+10% of the set value
Measurement range acc. to IEC 61557-2 for MIC-05s1 V
N
= 5000V: 5.00M
Ω to 20.0TΩ,
Measurement with DC and increasing voltage (SV) for U
ISO
= 5 kV
Display range
Resolution
Basic uncertainty
000 k
to 999 k
1 k
(3% m.v. + 10 digits)
1.00 M
to 9.99 M
0.01 M
10.0 M
to 99.9 M
0.1 M
100 M
to 999 M
1 M
1.00 G
to 9.99 G
0.01 G
10.0 G
to 99.9 G
0.1 G
100 G
to 999 G
1 G
(3.5% m.v. + 10 digits)
1.00 T
to 9.99 T
0.01 T
(7.5% m.v. + 10 digits)
10.0 T
Ω to 20.0 TΩ
0.1 T
(12.5% m.v. + 10 digits)
The accuracies shown above are maximum values calculated for the top range values. The
lower the reading, the lower the uncertainty.
Uncertainty for any measuring voltage and each result can be calculated from the following
formula:
δ
R
= ±(3%+(V
ISO
/( V
ISO
-R
zm
·21·10
-12
)-
1) ·100%) ± 10 digits
where:
V
ISO
– voltage at which the measurement is conducted [V]
R
zm
– measured resistance [Ω]
