METREL MI3115 - Page 50

MI 3115 PV Analyser
Single tests
50
Tcell (5 min)
PV cell temperature 5 min before test
Tcell (10 min)
PV cell temperature 10 min before test
Tcell (15min)
PV cell temperature 15 min before test
Tamb
Ambient temperature at time of measurement or manual
entry
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
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, 1 °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].
Test limits
∆Uoc limit (∆Uoc)
High limit (∆Uoc) [Off, Custom, 5 % 50 %]
∆Isc limit (∆Isc)
High limit (∆Isc) [Off, Custom, 5 % 50 %]
Test circuit