Fronius 3.0-3-S - Notes Regarding Dummy Devices; String Fuses

12
Text of the warning notices:
WARNING!
An electric shock can be fatal. Make sure that both the input side and output side of the
device are de-energised before opening the device. Wait for the capacitors to discharge (5
minutes).
Notes regarding
dummy devices
A dummy device is not suitable for connecting operationally to a photovoltaic system, and
must only ever be used for demonstration purposes.
IMPORTANT! Never connect DC cables to the DC connection sockets on a dummy de-
vice.
The connection of de-energised cables or sections of cable for demonstration purposes is
permissible.
A dummy device can be recognised by its device rating plate:
Example: Device rating plate of a dummy device
String fuses
String fuses are used in the Fronius Eco to provide additional protection for the solar mod-
ules.
The maximum short circuit current I
sc
, the maximum module return current I
R
or the maxi-
mum string fuse rating specified in the module data sheet of the respective solar module
is crucial in affording the solar modules the correct fuse protection.
The maximum short circuit current I
SC
per terminal is 12 A.
Where necessary, a tripping current higher than 12 A may be selected for the string fuses.
A DC Connector Kit (item number: 4,251,015) must be used if the inverter is operated with
an external string combiner box. In this case the solar modules are protected externally in
the string combiner box, and the metal bolts need to be used in the inverter.
The national regulations in respect of fuse protection must be observed. The electrical en-
gineer carrying out the installation is responsible for the correct choice of string fuses.
Dangerous electrical voltage
Wait for the capacitors to discharge.
WARNING! An electric shock can be fatal. Danger from voltage at the fuse hold-
ers. The fuse holders are live when a voltage is present on the DC connection of
the inverter, even when the DC switch is switched off. Make sure that the DC side
is de-energised before carrying out any work on the inverter's fuse holders.