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Idiomas disponibles
Idiomas disponibles
SERIES OR PARALLEL CONNECTION
In case of a multi-panel configuration, parallel connection will ensure an optimum production
especially in shaded areas.
In case of parallel coupling, the panel current adds up.
In case of series coupling, the total current equals to the lowest panel current.
Advantages / Disadvantages
Advantages
Power decrease if a panel is in the shade
Disadvantages
PANELS COMPATIBILITY
MAXIMUM VOLTAGE ACCEPTED BY THE CONTROLLER
There are 2 panel voltages: The operating voltage (Vmp) and the Stand-yb vltage (Voc).
To choose a MPPT charge controller, it is necessary to refer to the Stand-by voltage (Voc) of the panel,
that corresponds to the open circuit voltage.
In series, the Voc add up, whereas in parallel they do not.
Example : 100W panels – 12V monocristallin (= 100W / 21.3 Voc)
In series:
In parallel:
Uniteck recommends a parallel connection for better electrical efficiency and to avoid losses due to shading.
Serie
Series
Simplified connection
(tree, building, chimney, sail, ...)
+
+
= 300W and 63.9 Voc
+
= 200W and 21.3 Voc
Use of derivation connectors and longer cable
www.uniteck.fr
Parallel
Parallel
No power decrease when panel in
the shade.
sections
Adapted controller
UNIMPPT 100/30.24L
UNIMPPT 60/20.24L
EN
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