HT instruments SOLAR300N - Manual (Page 156)

SOLAR300 - SOLAR300N
EN - 154
7. Check that the active power Pac is positive and that the power factor Pf corresponds to
the load (typically equal to 1.00 for measures made downstream the inverter in
photovoltaic systems). In case of negative values of the active power, check the
connection of the amperometric clamps. In case of doubt, to check the connections
made, it can be useful to temporarily modify the settings and the connections of
the instrument in order to perform a measurement in three-phase 3-wire mode
downstream the inverter (see par. 5.3.1 and 7.13)
8. Turn on the SOLAR-02 unit by means of the relevant key on the unit itself. The unit will
remain on hold. Select the type of irradiance sensor on the unit (see § 4.5 of SOLAR-
02 user manual).
9. Connect the SOLAR-02 unit to the main unit by means of the USB cable. The main unit
must display the message “SOLAR-02 connected”. Should this message not appear,
disconnect and connect again the USB connector
10. Press the F1 key to start the test on a PV system (see § 5.5). The icon is
shown on the display of instrument and the “HOLD” message along with the waiting
time to reach the “00” instant condition are displayed on SOLAR-02 unit
11. Whenever the icon will appear on the display of instrument from the
beginning of the first minute after pressing the F1 key the test has been started on
a photovoltaic system. Disconnect the SOLAR-02 from main unit and and bring it near
the photovoltaic cells. The “Recording…” message is displayed on SOLAR-02.
12. Position the pyranometer on the plane of the photovoltaic panels. In case of use of
reference cell please refer to § 4.2 of it’s user manual for a correct fixing
13. Position the temperature sensor typically in contact wuth the back of the panel, fixed by
tape and do not touch it to avoid a wrong measurement
14. Connect the irradiation and temperature probes respectively to the inputs PYRA/CELL
and TEMP of the SOLAR-02 unit. Wait some seconds in order to permits a stable
measure by probes
15. Wait for “READY” message displayed on SOLAR-02. This event indicated that the
instrument has detected some data with solar irradiation > minimum limit threshold (see
§ 5.3.3.3)
16. Wait at least 1 minute in order to recording more valid samples than disconnect
the irradiation and temperature probes from the SOLAR-02 unit, bring the SOLAR-02
unit next to the to the main unit and connect them by means of the USB cable. The
main unit must display the message “SOLAR-02 connected” (should this message not
appear, disconnect and connect again the USB connector)
17. Press the F1 key (FINISH) on the main unit to stop the test
18. After the automatic data transfer phase, the instrument:
 Do not show any results if do not exist on the PV installation a “stable irradiance”
condition more than the minimum irradiance threshold (see § 5.3.3.3)
 Display the best performance values if during the recording, the Irradiance values
reached the “stable” condition and its values were higher than the minimum irradiance
threshold (see § 5.3.3.3)
19. Press SAVE to save the results obtained. Pressing the key will display the virtual
keyboard for typing possible comments. A further pressing of the SAVE key will store
the measure and the typed comments and will go back to the initial screen, ready for a
new measurement
20. Press ESC to delete the detected data and go back to the initial screen, ready for a
new measurement