SUN2000-(25KTL, 30KTL)-US
User Manual
5 Electrical Connections
Issue 03 (2017-04-01)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
56
Prerequisites
A three-phase AC switch must be installed on the AC side of each SUN2000 to ensure that the
SUN2000 can be safely disconnected from the power grid. See
10 Technical Specifications
to
select AC switches of the appropriate specifications.
Do not connect loads between the SUN2000 and the AC switch.
Context
Use copper-core cables that can withstand 90°C (194°F) or 105°C (221°F). The
copper-core cable that can withstand 105°C (221°F) is recommended. To facilitate
installation, use flexible cables.
Table 5-1
AC output power cable specifications
Conne
ction
Metho
d
Cable Type
Wire Quantity
Cable
Specific
ations
Cable Outer
Diameter
Connec
tion
through
a pipe
A single cable
Four (L1, L2, L3, and N) or
three (L1, L2, and L3)
NOTE
The PE cable can connect to the
chassis interior. For the detailed
connection method, see
5.3
Connecting the Ground Cable
.
8–2
AWG
6.3–12.1 mm
(0.25–0.48 in.)
Comm
on
connect
ion
Three-core,
four-core, or
five-core cable
If the PE cable connects
to the chassis exterior, use
a three-core (L1, L2, and
L3) cable or a four-core
(L1, L2, L3, and N) cable.
If the PE cable connects
to the chassis interior, use
a four-core (L1, L2, L3,
and PE) cable or a
five-core (L1, L2, L3, N,
and PE) cable.
Each
core: 8–2
AWG
24–32 mm
(0.94–1.26 in.)
OT terminals need to be prepared by yourself. M6 OT terminals are required.
If the neutral wire of the AC output power cable is connected, a 4 AWG cable is
recommended.
If the neutral wire of the AC output power cable is not connected, a 2 AWG cable is
recommended.