© Adolf Thies GmbH & Co. KG · Hauptstraße 76 · 37083 Göttingen · Germany
021821/08/21
Tel. +49 551 79001-0 · Fax +49 551 79001-65 · info@thiesclima.com ·
Page 14 of 102
3.3.3 Solar Panel
Electrical Connection:
The connection of the optional 12V solar panels is to be carried out in accordance with the
wiring diagram (see
chapter
). We recommend that the solar panel be earthed to protect it
against excess voltages. The integrated 12V solar controller carries out temperature-guided
control for optimal charging of the accumulator. The maximum power of the solar panel of
20W should not be exceeded, otherwise the controller could be damaged. Because of the
temperature control the accumulator should always be close to the Data logger.
Alignment:
•
Direction: the solar panel is always to aligned to the highest solar altitude (south in
the northern hemisphere and vice versa) in order to receive optimal power. Use a
compass if necessary.
•
Angle: the optimal angle of inclination (see
Figure 3
) is dependent on the latitude of
the site. If the Data logger is to be used throughout the year, we recommend an angle
of inclination for optimal performance in winter:
Angle of inclination = la 15°
(Note: does not apply to Arctic regions because of maximum angle of inclination of
90°)
Example for Berlin: latitude 50.3°
angle of inclination = 50.3° + 15° = 65.3°
Note:
A partial shadow caused by the structure or site, e.g. due to sensors or traverses attached
above the solar panel, must always be avoided.
Maintenance:
•
Dust, snow, leaves etc. on the solar panel reduce the amount of light and the energy
yield deteriorates. For this reason, the solar panel surface should be cleaned if
necessary.
Figure 4: Angle of inclination for solar panel (here 45°)
