METREL MI3115 - R Low - 200 Ma Resistance Measurement; I;U Curve Tracking

MI 3115 PV Analyser
Technical specifications
66
Nominal test voltages: 500 V d.c., 1000 V d.c. and 1500 V d.c.
Range (MΩ)
Resolution (MΩ)
Accuracy
Roc
0.01
Calculated value
199.9
0.1
200 999
1
Voltage
Range (V)
Resolution (V)
Accuracy
Um
1750
1
±(3 % of reading + 3 digits)
10.1.2 R low - 200 mA resistance measurement
General
Open-circuit voltage ............................. 20 V d.c.
Measuring current ................................ min. 200 mA at resistance R = 2 Ω
Test lead compensation ....................... up to 5 Ω
The number of possible tests ............... > 800, with a new fully charged battery pack at 200
mA / 0.1 Ω
Automatic polarity reversal of the test voltage.
R low
Measuring range according to EN 61557: 0.12 Ω Ω
Range (Ω)
Resolution (Ω)
Accuracy
R+
R-
R
0.01
±(3 % of reading + 3 digits)
199.9
0.1
±5 % of reading
200 1999
1
±10 % of reading
10.1.3 I/U curve tracking
General
System voltage ......................................
Maximum current ................................... 20 A
Maximum power of PV string ................. 24 kW
Connection ............................................. standard 4 mm METREL safety banana jacks
I-U curve tracking points ........................ min. 512 points (time equidistant)
Sampling rate .........................................
Accuracy of STC values is based on accuracy of measured electrical quantities, accuracy of
environmental parameters, and entered parameters of PV module. See Appendix D - PV
measurements - calculated values for more information about calculation of STC values.