Caution – HT instruments PVCHECK User Manual
Page 22
PVCHECK
EN - 20
5.6.
DB – DATABASE MODULE MANAGEMENT
The meter allows managing up to a maximum of 30 different types of PV modules,
further to a DEFAULT module (not editable and not erasable) which can be used as
reference case when no piece of information about the type of module being tested is
available.
The parameters, referred to 1 module, which can be set are described below in Table 1
together with their measuring range, resolution and validity condition.
Symbol Description
Range
Resol.
Conditions
Nms
Number of modules per string
1
50
1
Pmax
Maximum rated power of module
50
3200W
1W
01
.
0
max
max
P
I
V
P
mpp
mpp
Voc Open-circuit
voltage
15.00
99.99V
100.0
320.0V
0.01V
0.1V
Voc
Vmpp
Vmpp
Voltage on maximum power point
15.00
99.99V
100.0
320.0V
0.01V
0.1V
Voc
Vmpp
Isc Short-circuit
current 0.5
9.99A
0.01A
Isc
Impp
Impp
Current on maximum power point
0.5
9.99A
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
0.1*Alfa / Isc
0.1
-9.99
9.99mA/°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
Rated working temperature of cell
0
100°C
1°C
Tech.
Effects due to module technology
STD (standard),
CAP (capacitive
eff.)
Rs
Internal serial resistance
0.00
10.00 0.01
Table 1: Typical parameters of PV modules
CAUTION
“Tech” is referred to the choice of the technology of the module being
tested. Select the “STD” option in case of test on “STANDARD” PV modules
or the “CAP” option in case of test on PV modules with remarkable
capacitive effects (e.g. HIT/HIP technology).
A wrong choice of the type of technology can lead to a negative outcome of
the final test.