Huawei SUN2000-33KTL - Electrical Connection

3
2
Electrical Connection
M6
5 N·m
OT-M6
Installing a PGND Cable (Using the Ground Point on the Chassis Shell)
2.1
OT-M6
Installing AC Output Power Cables
2.2
OT-M6
PE terminal
1. It is recommended that an 8 mm
2
, 10
mm
2
, 8 AWG or 7 AWG outdoor
copper-core cable be used as a
ground cable. Ground cables must
be securely connected.
2. It is recommended that the ground
cable be connected to a nearby
ground position. For a system with
multiple inverters connected in
parallel, connect the ground points of
all inverters to ensure equipotential
connections.
3. To prevent corrosion, apply silica gel
or paint to the PE terminal after
connecting the PGND cable.
NOTE
Both the shell and maintenance compartment of the inverter provide a ground point. Select either
for connecting the ground cable.
• If you connect a ground cable to the ground point on the chassis shell, you are recommended to
use a four-core (L1, L2, L3, and N) outdoor copper-core cable for the SUN2000-33KTL/33KTL-
E001. If you connect a ground cable to the ground point in the maintenance compartment, you
are recommended to use a five-core (L1, L2, L3, N, and PE) outdoor copper-core cable.
• If you connect a ground cable to the ground point on the chassis shell, you are recommended to
use a three-core (L1, L2, and L3) outdoor copper-core cable for the SUN2000-30KTL-A/40KTL.
If you connect a ground cable to the ground point in the maintenance compartment, you are
recommended to use a four-core (L1, L2, L3, and PE) outdoor copper-core cable.
• You need to prepare OT terminals by yourself: The OT terminal corresponding to the SUN2000-
33KTL/33KTL-E001 AC output power cable is of M6 model and matches a cable with the
maximum cross-sectional area of 25 mm
2
. The OT terminal corresponding to the SUN2000-
30KTL-A/40KTL AC output power cables is of M8 model and matches a cable with the maximum
cross-sectional area of 35 mm
2
. The OT terminal corresponding to the ground cable is of M6
model and matches a cable with the maximum cross-sectional area of 25 mm
2
.
NOTE
Inverter Model
Conductor Cross
-Sectional Area
Cable Outer Diameter
Range
Recommended
Value
Range
Recommended
Value
SUN2000
-
33KTL/33KTL
-E001
16
–25 mm
2
(or 6–3
AWG)
16 mm
2
or 6
AWG
24
–32 mm
28 mm
SUN2000
-30KTL-A
/
40KTL
16
–35 mm
2
(or 6–2
AWG)