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000508AG
Input connection to PV generator (DC side)
After having carried out preliminary checks and therefore having veried
that there are no problems in the photovoltaic system, the inputs can be
connected to the inverter.
When the photovoltaic panels are exposed to sunlight they provide continuous DC voltage to
the inverter. To avoid risks of electric shock, all wiring operations must be carried out with the
DC disconnect switch (internal or external to the inverter) off.
Caution! The inverters referred to in this document are TRANSFORMERLESS. This type
requires the use of insulated photovoltaic panels (IEC61730 Class A Rating) and the need to
keep the photovoltaic generator oating with respect to ground: no terminal of the generator
must be connected to ground.
The inverter has a single input channel (MPPT) and is equipped with a
pair of quick-t connectors
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for connecting the PV generator.
If the input strings are connected in parallel, they must have the same installation conditions
(number of panels in series, type of panels, orientation and angle).
Comply with the maximum input current relating to the quick-t connectors as indicated in the
technical data.
Polarity inversion can cause serious damage. Check polarity before connecting each string!
Insert the quick-t connectors always checking the tightness of the con-
nectors.
The gure below shows a connection example of the string inputs.
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