User Manual 6 Electrical Connection
33
6.4.2 Assembling AC Cables to Connector
Inverter is equipped with water-proof direct plug-in connectors for AC connection,
which match AC terminals at the bottom of the inverter.
“L”, “N” and “PE” should be equipped with correctly colored cables for
distinguishing. Please refer to related standards for specific wiring color.
Inverter is connected to the grid via three wires (L, N and PE). Feeding power is
always single-phase via AC terminal at the bottom of the unit.
AC Cable Requirements
Select AC cable specifications and types considering the following facts:
y
The grid impedance of the AC cable must correspond to the specification to
avoid unintended disconnection from the grid or derating of the output power.
y
The cable cross-sectional areas and recommended value are shown in the
following table, avoiding power loss in the cables of more than 1% of the
nominal power.
Type Conductor Cross Section(mm2) Outer cable diameter(mm)
Range Recommended Value Range Recommended Value
SG3KTL-M 4…6 4 10…14 10
SG4KTL-M 4…6 4 10…14 10
SG5KTL-M 4…6 6 10…14 10
y
Withstand ambient temperature;
y
Layout type (inside wall, underground, free air etc.);
y
UV resistance and so on.
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