Connecting Cables - Huawei SUN2000 Series Quick Manual

4

Connecting Cables

•
Connect cables in accordance with the local installation laws and regulations.
•
To prevent poor cable connection due to overstress, leave enough slack before connecting the
cables to the appropriate ports.
4.1
Preparations
S and S are the conductor cross-sectional areas of AC power cables and PE cables respectively.
p
3-pin Model (125KTL) Cable Description
No. Cable
1 PE cable
Tracking
2 system power
cable
AC output
power cable
(multi-core)
3
AC output
power cable
(single-core)
DC input power
4
cable
RS485
5 communications
cable
The value of S is valid only if the conductors of the PE cable and AC power cable use the same
p
material. If the materials are different, ensure that the conductor of the PE cable with a proper cross-
sectional area produces a conductance equivalent to that of the cable specified in the table.
Type
Outdoor cable and M10 OT/DT
terminals
Three-core outdoor copper cable
with dual-layer protection
• If you connect a ground cable to
the ground point on the chassis
shell, you are advised to use a
three-core (L1, L2, and L3)
outdoor cable and M12 OT/DT
terminals (L1, L2, and L3).
• If you connect a ground cable to
the ground point in the
maintenance compartment, you
do not need to prepare a PE
cable but are advised to use a
four-core (L1, L2, L3, and PE)
outdoor cable, M12 OT/DT
terminals (L1, L2, and L3), and
M10 OT/DT terminals (PE).
You are advised to use a single-
core outdoor cable and M12
OT/DT terminals.
PV cable that meets the 1100 V
standard
Outdoor shielded twisted pair that
meets the local standard
Recommended
Conductor Cross-
Sectional Area
≥ S/2
S
p
2
10 mm
• Copper cable
− S: 95–185 mm
− S ≥ S/2
p
• Aluminum alloy
cable or copper-clad
aluminum cable:
− S: 120–240 mm
− S ≥ S/2
p
• Copper cable
− S: 95–185 mm
• Aluminum alloy
cable or copper-clad
aluminum cable:
− S: 120–240 mm
2
4–6 mm
2
0.25–1 mm
4
Outer Diameter
N/A
15–18 mm
2
24–66 mm
2
2
14–32 mm
2
5.5–9 mm
• One or two
communications
cables:
4–11 mm
• Three
communications
cables:
4–8 mm