Fronius Primo 10.0-1 208-240, Installation Instructions Manual

Page: 27 / 52

Cu: min. AWG 14 – max. AWG 6
Al: AWG 6
Cu: min. AWG 14 – max. AWG 2
Al: AWG 6
DC =
Cu: min. AWG 14 - max. AWG 6
Al: AWG 6
Cu / Al: min. AWG 4 - max. AWG 2
(with optional connection distribut-
or)
AC ~
Cu: min. AWG 10 - max. AWG 2;
AWG 6 - AWG 2 (for single-wire
cable or stranded wires)
Multifunctional power interface:
AWG12
Terminal tightening torque : Terminal tightening torque :
16 lbf.in / 1.33 t. lb. /1.8 Nm AC ~
31 lbf.in / 2.58 ft. lb. / 3.5 Nm
DC =
16 lbf.in / 1.33 ft. lb. /1.8 Nm
Preparing Alu-
minum Cables
for Connection The AC-side terminals are designed for connecting single-wire, round aluminum
cables. Due to the reaction of aluminum with air that creates a tough, non-con-
ductive oxide layer the following points must be considered when connecting alu-
minum cables:
- Reduced rated currents for aluminum cables
- The connection requirements listed below
Always follow the instructions of the cable manufacturer when using aluminum
cables.
Take into account local specifications when configuring cable cross sections.
Connection Requirements:
1
Carefully clean off the oxide layer of the stripped end of the cable, e.g., using
a knife
IMPORTANT! Do not use brushes, files, or sandpaper; aluminum particles may
get stuck and can transfer to other cables.
2
After removing the oxide layer of the cable end, rub in a neutral grease, e.g.,
acid-free and alkali-free Vaseline
3
Then immediately connect it to the terminal
IMPORTANT! Repeat the steps above whenever the cable is disconnected and
then reconnected.
Monitoring the
grid The resistance in the leads to the AC-side connection terminals must be as low
as possible for optimal functioning of grid monitoring.
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EN-US