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I-V400w - I-V500w - SOLAR I-Vw - SOLAR I-Ve
EN - 19
5.3. DB – MODULE DATABASE
The meter allows defining
up to 30 different PV modules
, further to a DEFAULT situation
(not editable and not erasable) which can be used as reference case when no piece of
information about the module under test is available.
The parameters which can be set,
with reference to 1 module
, are described below in
Table 1 together with their range, resolution and validity condition.
Symbol Description
Range
Resolution
Condition
Nms
Number of modules for string
1
50
1
Pmax
Maximum nominal power of module
50
4800W
1W
01
.
0
max
max
P
I
V
P
mpp
mpp
Voc Open
voltage
15.00
99.99V
100.0
320.0V
0.01V
0.1V
Voc
Vmpp
Vmpp
Voltage on point of maximum power
15.00
99.99V
100.0
320.0V
0.01V
0.1V
Voc
Vmpp
Isc
Short circuit current
0.5
15.00A
0.01A
Isc
Impp
Impp
Current on point of maximum power
0.5
15.00A
0.01A
Isc
Impp
Toll -
Negative tolerance for Pmax provided
by the module manufacturer
0%
25.0%
0.1%
100*Tol
-
/Pnom< 25
0
99W
1
Toll +
Positive tolerance for Pmax provided
by the module manufacturer
0
25%
0.1%
100*Tol
+
/Pnom< 25
0
99W
1
Alpha
Isc temperature coefficient
-0.100
0.100%/°C 0.001%/°C
100*Alpha / Isc
0.1
-15.00
15.00mA/°C
0.01mA/°C
Beta
Voc temperature coefficient
-0.99
-0.01%/°C
0.01%/°C
100*Beta/Voc
0.999
-0.999
-0.001V/°C
0.001V/°C
Gamma
Pmax temperature coefficient
-0.99
-0.01%/°C
0.01%/°C
NOCT
Nominal working temperature of cell
0
100°C
1°C
Tech.
Effects due to PV technology
STD (standard)
CAP(capacitive eff.)
HIT (hybrid techn.)
Degr
Percentage of annual performance
degradation
0.0
25.0%/yr
0.1%/yr
Table 1: Typical parameters of PV modules
CAUTION
The “
Tech
” item is referred to the choose of the technology of the module
on test. Select the “STD” option for test on “STANDARD” PV modules,
“CAP” option for test on higher capacitive effects PV modules or HIT
(modules with HIT/HIP hybrid technology
A wrong choose of the type of technology can lead to a negative outcome of
the final test
The “
Degr
” item is referred to the power performance degradation of a PV
module/strings/field expressed in annual percentage (maximum limit set =
25%)