MI 3109 EurotestPV Lite
Technical specifications
65
9 Technical specifications
9.1 Insulation resistance (of PV systems) R
OC+
, R
OC-
and R
OC
R
OC+
, R
OC-
Insulation resistance (nominal voltages 50 V
DC
, 100 V
DC
and 250 V
DC
)
Measuring range according to EN61557 is 0.15 M
199.9 M
.
Measuring range (M
)
Resolution (M
)
Accuracy
0.00
19.99
0.01
(5 % of r 3 digits)
20.0
99.9
0.1
(10 % of reading)
100.0
199.9
(20 % of reading)
Insulation resistance (nominal voltages 500 V
DC
and 1000 V
DC
)
Measuring range according to EN61557 is 0.15 M
1 G
.
Measuring range (M
)
Resolution (M
)
Accuracy
0.00
19.99
0.01
(5 % of r 3 digits)
20.0
199.9
0.1
(5 % of reading)
200
999
1
(10 % of reading)
R
OC
Measuring range (M
)
Resolution (M
)
Accuracy
0.00
19.99
0.01
Calculated value
OC
OC
OC
OC
m
OC
OC
R
R
R
R
U
U
R
20.0
199.9
0.1
200
999
1
Voltage
Measuring range (V)
Resolution (V)
Accuracy
0
1200
1
(3 % of r 3 digits)
Nominal voltages ............................... 50 V
DC
, 100 V
DC
, 250 V
DC
, 500 V
DC
, 1000 V
DC
Open circuit voltage ........................... -0 % / +20 % of nominal voltage
Measuring current .............................. min. 1 mA at R
N
=U
N
1 k
/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 if 3-wire test lead is used while it is valid up to 100 M
if tip
commander is used.
Specified accuracy is valid up to 100 M
if relative humidity > 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.
The insulation resistance results in Autotest may slightly differ in comparison to results
in Single test mode because of the three wire connection and the internal resistance of
the measuring instrument.
