HT instruments SOLAR I-V - Manual (Page 37)

I-V400 - SOLAR I-V
EN - 35
19. Connect the meter to the module/string under test as shown in Fig. 7a. In particular,
connect the negative output pole of module/string to P1, C1 input terminals and the
positive output pole of module/string to P2, C2 input terminals
Fig. 7a: Instrument connection to module/string FV Fig. 7b: Positioning of inclinometer M304
CAUTION
The method used by the instrument meter for output VDC and IDC
measurements of PV module/string is the “4-wire”. Therefore, it is possible to
use also test cables connected to P1, C1, P2, C2 inputs of different length
without performing any calibration of cable resistance. It is recommended to
use cables with a §
 4mm 2
20. After connection to the plant, the real time values of
parameters are shown by meter:
 Vdc = DC output voltage of PV module/string
 Irr = Irradiance value measured by sensor
 Tc = Value of module temperature
15/05/10 15:34:26
V d c = 3 6 7 V
I r r = 1 0 4 5 W / m 2
T c = 4 5 ° C
Module: SUNPOWER 210
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CAUTION
At the press of GO/STOP key some different error messages can be
displayed by the meter (see § 6.4) and, due of this, the test cannot start.
Check and remove, if possible, this error message before start the test
21. Press GO/STOP key to start the test. If none of the
previous error messages are detected, the message
“Measuring…” is shown on the display for some seconds,
depending on the level of power during test.
15/05/10 15:34:26
V d c = 3 6 7 V
I r r = 1 0 4 5 W / m 2
Tc = 45 °C
Module: SUNPOWER 210
Measuring…
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