Connecting Aluminum Cables; Notes Regarding Dummy Devices; Inverter Dc Connection - Fronius Galvo Operating Instructions Manual

Connecting alu- The DC-side terminals are designed for connecting single-wire, round aluminum cables.
minum cables The following points must be taken into account when connecting aluminum cables due to
the non-conducting oxide layer of aluminum:
-
-
Connection Requirements:
1
IMPORTANT Do not use brushes, files or sandpaper. Aluminum particles may get stuck
and can transfer to other cables.
2
3
Repeat the steps above whenever the cable is disconnected and then reconnected.
Notes regarding A dummy device is not suitable for connecting operationally to a photovoltaic system, and
dummy devices must only ever be used for demonstration purposes. Dummy devices are indicated as such
on their rating plate.
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.
Inverter DC con-
nection
IMPORTANT! Check the polarity and voltage of the solar module strings: the permitted
voltage is:
-
-
The difference between the individual solar module strings must not exceed 10 V.
14
Reduced rated currents for aluminum cables
The connection requirements listed below
NOTE! Take into account local specifications when configuring cable cross sec-
tions.
Carefully clean off the oxide layer of the stripped end of the cable, e.g., using a knife.
After removing the oxide layer of the cable end, rub in a neutral grease, e.g., acid- and
alkali-free Vaseline.
Then immediately connect it to the terminal.
NOTE! Only break out as many target break points as the number of cables that
are provided (e.g. if there are two DC cables, then break out two recesses).
Max. 420 V
for Fronius Galvo 1.5-1
for Fronius Galvo 2.0-1
Max. 550 V
for Fronius Galvo 2.5-1
for Fronius Galvo 3.0-1
for Fronius Galvo 3.1-1