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4.2
Installing Ground Cables (Using the Ground Point on the Chassis Shell)
The ground point on the enclosure is preferred to connect to the PE cable for the SUN2000. The
ground point in the maintenance compartment is used for connecting to the ground cable included
in the multi-core AC power cable. For details, see section 4.3 "Installing AC Output Power Cables."
1. Use an outdoor copper cable with a cross-sectional area of at least 5.5 mm
must be secured.
2. The SUN2000 is grounded in type A or C mode.
3. It is recommended that PE cable of the inverter be connected to the nearest ground point. For a
system with multiple inverters connected in parallel, connect the ground points of all inverters to
ensure equipotential connections to ground cables.
4. To enhance the corrosion resistance of the PE terminal, apply silica gel or paint on it after
connecting the PE cable.
4.3
Installing AC Output Power Cables
1. Never open the host panel of the inverter.
2. Before opening the inverter maintenance compartment door, turn off the downstream AC output
switch and the two bottom DC switches.
If the inverter adopts RS485, a CV or CVT cable is recommended.
If you connect a ground cable to the ground point on the chassis shell, you are recommended to
use a three-core outdoor copper-core cable with a cross-sectional area of 22 mm
connect a ground cable to the ground point in the maintenance compartment, you are
recommended to use a four-core outdoor copper-core cable with a cross-sectional area of 22
2
mm
.
For more details about cable specifications, see the SUN2000-(33KTL, 40KTL)-JP User Manual.
The AC OUTPUT 1 connector supports the cable with an outer diameter of 37 mm to 44 mm.
The AC OUTPUT 2 connector supports the cable with an outer diameter of 24 mm to 32 mm.
Select an appropriate AC OUTPUT connector based on the cable outer diameter. This
document uses the AC OUTPUT 2 connector as an example to describe how to connect a cable.
OT-M6
PE terminal
5 N· m
M6
5
2
. The ground cable
2
. If you
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