User Manual
6 Electrical Connection
31
AC Cable Requirements
The grid is connected with the inverter via 5 wires (L1, L2, L3, N and PE). Feed-in
power is always three-phase via AC terminal at the bottom of the unit.
A five-core AC waterproof direct plug-in connector is supplied for AC connection,
which mates with AC terminal at the underside of the unit.
Consider the following facts when select AC cables specifications and types:
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 maximum cable lengths dependent from the cable cross section are shown
in the following table, avoiding power loss in cables of more than 1% of nominal
inverter rating.
Type
Conductor Cross Section (mm
2
)
Outer cable diameters
(mm)
Range
Recomme
nded
Value
Range
Recommended
Value
SG10KTL
4…8.37
(11AWG…8AWG)
4.0
(11AWG)
11…20* 15
SG12KTL
SG15KTL
4…8.37
(11AWG…8AWG)
6.0 (9AWG)
11…20*
15
SG20KTL
6…10
(10AWG…7AWG)
8.37
(8AWG)
15…25 20
Note: *for cable diameters 11…13 mm use external cable clamp
y
Withstand ambient temperature;
y
Layout type (inside wall, underground, free air etc.);
y
UV resistance and so on.
Summary of Contents for SG10KTL
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