OT-M6
M6
5 N·m
Installing Ground Cables
4.2
Installing AC Output Power Cables
4.3
Both the shell and maintenance compartment of the inverter provide a ground point. Select either
for connecting the ground cable. There are two ground points on the chassis shell and one of them
is standby.
1. The outdoor copper-core cable with a cross-sectional area of 16 mm
2
is recommended. The
ground cable must be secured.
2. It is recommended that PGND 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.
3. To enhance the corrosion resistance of the PE terminal, apply silica gel or paint on it after
connecting the PGND cable.
NOTE
• 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 25 mm
2
as the AC
output power cable for the SUN2000-42KTL.
• If you 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 25 mm
2
as the AC output power cable for the SUN2000-42KTL.
• If you connect a ground cable to the ground point on the chassis shell in a scenario without a
neutral wire, you are recommended to use a three-core outdoor copper-core cable with a cross-
sectional area of 25 mm
2
as the AC output power cable for the SUN2000-36KTL.
• If you connect a ground cable to the ground point in the maintenance compartment in a scenario
without a neutral wire, you are recommended to use a four-core outdoor copper-core cable with a
cross-sectional area of 25 mm
2
as the AC output power cable for the SUN2000-36KTL.
• If you connect a ground cable to the ground point on the chassis shell in a scenario with a neutral
wire, you are recommended to use a four-core outdoor copper-core cable with a cross-sectional
area of 25 mm
2
as the AC output power cable for the SUN2000-36KTL.
• If you connect a ground cable to the ground point in the maintenance compartment in a scenario
with a neutral wire, you are recommended to use a five-core outdoor copper-core cable with a
cross-sectional area of 25 mm
2
as the AC output power cable for the SUN2000-36KTL.
• For more details about cable specifications, see the
SUN2000-(36KTL, 42KTL) 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.
NOTE
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.
WARNING
5
