Huawei SUN2000-75KTL Series User Manual page 61

SUN2000-(75KTL, 100KTL, 110KTL, 125KTL) Series
User Manual
The solar inverter has an RCMU inside. Its external AC switch should be a three-
phase circuit breaker or other AC load circuit breakers to safely disconnect the
solar inverter from the power grid.
Table 5-2 Cable description of a 3-pin model (S: cross-sectional area of the AC cable conductor; S
cross-sectional area of the protective earthing cable conductor)
No. Cable
1 DC input
power cable
2 RS485
communicatio
ns cable
3 Protective
earthing (PE)
[1]
cable
4 Tracking
system power
cable
Issue 15 (2023-01-31)
NO TICE
NO TE
● The cable diameter must comply with local cable standards.
● The factors that affect cable selection include the rated current, cable type, routing
mode, ambient temperature, and maximum expected line loss.
Category
PV cable that meets the
1100 V standard
Outdoor shielded twisted
pair that meets the local
standard
Single-core outdoor
copper cable and M10
OT/DT terminals
Three-core outdoor
copper cable with dual-
layer protection
Copyright © Huawei Technologies Co., Ltd.
Conductor Outer
Cross-Sectional Diameter
Area Range
5.5–9 mm
2
4–6 mm
● One or
2
0.25–1 mm
● Three
S ≥ S/2 N/A
p
15–18 mm
2
10 mm
5 Electrical Connections
Source
Prepared by
the
customer
Prepared by
two the
commu customer
nication
s cables:
4–11
mm
commu
nication
s cables:
4–8 mm
Prepared by
the
customer
Prepared by
the
customer
:
p
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