HT instruments SOLAR300N - Manual (Page 168)

SOLAR300 - SOLAR300N
EN - 166
6. 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 7.13Turn on the SOLAR-01 unit by means
of the relevant key on the unit itself. SOLAR-01 will switch to stand-by mode (STATUS
LED flashing)
7. Turn on the SOLAR-01 unit by means of the relevant key on the unit itself. SOLAR-01
will switch to stand-by mode (STATUS LED flashing)
8. Connect the SOLAR-01 unit to the main unit by means of the USB cable. The main unit
must display the message “SOLAR-01 connected”. Should this message not appear,
disconnect and connect again the USB connector
9. Press the GO/STOP key to start the recording on a PV system (see § 5.6). The icon
is shown on the display of SOLAR300N and the LED REC flashing on unit
SOLAR-01 (further to the STATUS LED, already flashing). For the meaning of the
flashing of the SOLAR-01 LEDs refer to §
10. 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-01 from main unit and and bring it near
the photovoltaic cells
11. Position the pyranometer on the plane of the photovoltaic panels and 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
12. Connect the irradiation and temperature probes respectively to the inputs PYRA and
TEMP of the SOLAR-01 unit. Wait some seconds in order to permits a stable measure
by probes
13. Wait for the READY LED to start flashing. This event indicated that the instrument has
detected some data with solar irradiation > minimum limit threshold (see § 5.3.3.3).
Wait at least 1 minute in order to recording more valid samples than disconnect
the irradiation and temperature probes from the SOLAR-01 unit, bring the SOLAR-01
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-01 connected” (should this message not
appear, disconnect and connect again the USB connector)
14. Press the GO/STOP key on the instrument to stop the recording
15. After the automatic data transfer phase, the instrument will automatically display the
maximum performance values relative to AC and DC efficiency and automatically
provide to save the recording into the memory of meter