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