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Metrel MI 3121H SMARTEC 2.5 kV Manual

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MI 3121H Smartec 2,5 kV Insulation / Continuity Technical specifications
38
8 Technical specifications
8.1 Insulation resistance
Insulation resistance (nominal voltages 100 V
DC
and 250 V
DC
)
Measuring range according to EN61557 is 0.15 MΩ ÷ 999.9 MΩ.
Measuring range (MΩ) Resolution (MΩ)
Accuracy
0.00 ÷ 19.99
0.01
±(5 % of reading + 3 digits)
20.0 ÷ 199.9
0.1
±(10 % of reading)
200 ÷ 999
1
±(20 % of reading)
Insulation resistance (nominal voltages 500 V
DC
, 1000 V
DC
and 2500 V
DC
)
Measuring range according to EN61557 is 0.15 MΩ ÷ 100 GΩ.
Measuring range (Ω) Resolution (MΩ)
Accuracy
0.00M ÷ 19.99M
0.01
±(5 % of reading + 3 digits)
20.0M ÷ 199.9M
0.1
200M ÷ 999M
1
±(5 % of reading)
1.00G ÷ 4.99G
10 ±(10 % of reading)
5.00G ÷ 19.99G
10 ±(20 % of reading)
20.0G ÷ 99.9G
100 ±(20 % of reading)
Dielectric absorption ratio DAR
Display range DAR Resolution Accuracy
0.01 ÷ 9.99
0.01
±(5% of reading + 2digits)
10.0 ÷ 100.0
0.1
±(5% of reading)
Polarization index PI
Display range PI Resolution Accuracy
0.01 ÷ 9.99
0.01
±(5% of reading + 2digits)
10.0 ÷ 100.0
0.1
±(5% of reading)
Voltage
Measuring range (V) Resolution (V) Accuracy
0 ÷ 1999
1
±(3 % of reading + 3 digits)
2.00k ÷ 3.00k
10
±(3 % of reading)
Nominal voltages .............................. 100 V
DC
, 250 V
DC
, 500 V
DC
, 1000 V
DC
,
2500 V
DC
Open circuit voltage.......................... -0 % / +20 % of nominal voltage
Measuring current............................. min. 1 mA at R
N
=U
N
×1 kΩ/V
Short circuit current........................... max. 3 mA
The number of possible tests............ > 1200, with a fully charged battery
Auto discharge after test.
Specified accuracy is valid up to 100 MΩ if relative humidity is move over 85 %.
In case the instrument gets moistened, the results could be impaired. In such case, it is
recommended to dry the instrument and accessories for at least 24 hours.
The error in operating conditions could be at most the error for reference conditions
(specified in the manual for each function) ±5 % of measured value.
… 38 …


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