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In the -FS version each input is supplied with protection fuses (not factory fitted) and an input
polarity control. To check the polarity, connect all the strings and check that the LEDs on the
fuse board
is to be considered INCORRECT. Once the check has been carried out, DISCONNECT the
strings and, checking there is no voltage at the DC inputs, install the protection fuses (sup-
plied) with the aid of fuse holders; reconnect the quick-fit connectors. Check also that the fuse
current rating is the correct size for the photovoltaic modules installed. As long as the check
of string polarity, the DC switch must be in OFF position.
If any string inputs are not required, you must ensure that covers are installed to the connec-
tors, and install any which are missing.
This is necessary both for the inverter seal, and to avoid damage to the free connector which
IP65
may be used at a later time.
are lit up; if one or more LEDs is off, the polarity of the corresponding strings
13
The figure below shows a connection example of the string inputs with
dual input channel. Each input channel is connected to a string, while the
protective covers are installed to unused connectors.
5 - Installation
48
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