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Notes regarding grid connection
Monitoring the
To provide the best possible grid monitoring, the resistance in the leads to the AC-side ter-
grid
minals should be as low as possible.
AC terminals
IMPORTANT! When using ferrules for AC cables with a cross-section of 16 mm², the fer-
rules must be crimped with a right-angled cross-section.
The use of ferrules with insulating collars is only permitted up to a max. cable cross-section
of 10 mm².
Type of AC cable
The following types of AC cable can be connected to the AC terminals of the inverter:
Cu / Al
Preparing the alu-
The AC-side terminals are suitable for connecting single-wire, round aluminium cables. Be-
minium cables for
cause of the formation of a non-conductive oxide layer due to the reaction of aluminium
connection
with air, the following points must be considered when connecting aluminium cables:
-
-
Always follow the cable manufacturer instructions when using aluminium cables.
When designing cable cross-sections, take local regulations into account.
Connection conditions:
1
IMPORTANT! Do not use brushes, files or emery paper, as the aluminium particles get
trapped and can be transferred to other conductors.
2
12
min. 2,5 mm² - max. 16 mm²
Cu
-
copper or aluminium: round, single wire
-
Copper: round, finely stranded up to conductor category 4
the reduced rated currents for aluminium cables
the connection conditions listed below
Carefully clean the oxide layer from the bare end of the cable by scraping it, e.g. with
a knife
Once the oxide layer is removed, rub the end of the cable with a neutral grease, such
as non-acidic and non-alkaline Vaseline
PE
Ground conductor / grounding
L1
Phase conductor
N
Neutral conductor
Max. cross-section of each conductor cab-
le:
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.
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