METREL MI3115 - Page 52

MI 3115 PV Analyser
Single tests
52
∆Isc
Relative change of Isc
∆Umpp
Relative change of Umpp
∆Impp
Relative change of Impp
∆Pmpp
Relative change of Pmpp
FF_m
Measured fill factor
FF_n
Fill factor (nominal)
Graphs
I/U (measured)
Measured I/U curve
P/U (measured)
Measured P/U curve
I/U (STC)
I/U curve (STC)
P/U (STC)
P/U curve (STC)
I/U (nom)
I/U curve (nominal)
P/U (nom)
P/U curve (nominal)
Test parameters
Number of modules in PV
string
Number of PV modules in series [Custom, 1 50]
Number of PV strings
Number of PV modules / strings in parallel [Custom, 1 4]
Module
PV module name.
Parameters: Manufacturer, Pmax, Umpp, Impp, Uoc, Isc,
NOCT, alpha, beta, gamma, Rs are visible.
For more information see PV module configuration.
Irr min
Minimal valid solar irradiance for calculation [Custom, 500
W/m
2
1000 W/m
2
]
Environmental data
Environmental data mode [Remote, Manual]
Irr
1)
Irradiance [Custom, 800 W/m
2
]
Tcell
1)
PV cell temperature [Custom, 45.0 °C]
Tamb
1)
Ambient temperature [Custom, 25.0 °C]
Tcell correction
Correction of measured cell temperature to compensate for
the difference between the actual cell temperature and the
measured temperature. [Off, 0 °C 5 °C].
According to the EN 61829 standard the difference is
typically 2 °C.
∆Uoc warning
Limit for the improper ∆Uoc warning [Off, 5 % 50 %]
1)
User settable when Environmental data = [Manual].