HT instruments SOLAR300N User Manual

Page 48

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SOLAR300 - SOLAR300N

EN - 46

5.3.2. Parameter setting screen – PV systems
Press the F1 key or touch the “PARAM” item on the display. The instrument displays the
following screen:

Fig. 100: Parameter setting screen for PV systems

In this screen it is possible to set the characteristic parameters of the photovoltaic system
being tested such as the nominal power of the system, the

 and NOCT coefficients of the

panels used for system construction, the default values for the temperature of the panels
and the environmental temperature at which the panels are, the type of mathematical
relationship to correct the power which can be generated by the panels when the
temperature varies (the relationship now in use is displayed on the message bar).

5.3.2.1. Setting the nominal power of the photovoltaic system
This option allows setting the maximum nominal value of the power of the photovoltaic
system (PV).
1. Move the cursor on “Pnom” by means of the up or down arrow keys, so that it is

highlighted in blue

2. By means of the F3 or F4 key (or items MOD(+) or MOD(-) on the display), select the

desired value

3. Press the SAVE or ENTER key (or the smart icon

) to save the selected setting by

confirming with “Ok”. In this way, the settings made will remain valid also after turning
off the instrument

4. To quit the settings made or to exit without saving, press the ESC key (or the smart

icon )

5.3.2.2. Setting the Gamma parameter of photovoltaic panels
This option allows setting the value of the Gamma parameter (

), coefficient of variation

of Power according to Temperature, one of the characteristic parameters of the panels
used for the realization of a PV system, expressed in %°C and tipically negative
1. Move the cursor on “

” by means of the up or down arrow keys, so that it is highlighted

in blue.

2. By means of the F3 or F4 key (or items MOD(+) or MOD(-) on the display), select the

desired value within the range -0.01

-1.00.

3. Press the SAVE or ENTER key (or the smart icon

) to save the selected setting by

confirming with “Ok”. In this way, the settings made will remain valid also after turning
off the instrument

4. To quit the settings made or to exit without saving, press the ESC key (or the smart

icon )

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