8
Notes regarding grid connection
Monitoring the
Grid
AC terminals
PE
Ground conductor / grounding
L1-L3 Phase conductor
N
Neutral conductor
Max. cross-section of each conductor ca-
ble:
16 mm²
Min. cross-section of each conductor cable:
in accordance with the fuse rating on the
AC side, but at least 2.5 mm²
The AC cables can be connected to the AC
terminals without ferrules.
In the case of an AC cable with a cross-section of 16 mm², ferrules can be either not used
or used only to a limited extent depending on the type of ferrule and crimping.
Type of AC cable
The following types of AC cable can be connected to the AC terminals of the inverter:
Connecting alu-
minum cables
The AC-side terminals are designed for connecting single-wire, round, aluminum cables.
The following points must be taken into account when connecting aluminum cables due to
the non-conducting oxide layer of aluminum:
-
Reduced rated currents for aluminum cables
-
The connection requirements listed below
Connection Requirements:
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.
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.
IMPORTANT!
The resistance in the leads to the AC-side connection terminals must be as
low as possible for optimal functioning of grid monitoring.
AC
PE
PE
PE
PE
N
M32
L1
L1
L3
L3
L2
L2
-
copper or aluminium: round, single wire
-
Copper: round, finely stranded up to conductor category 4
Cu / Al Cu
max. Class 4
NOTE!
Take into account local specifications when configuring cable cross sec-
tions.
1
2
3
