● It is recommended that the ground cable be connected to a nearby ground
point. For a system with multiple SUN2000s connected in parallel, connect the
ground points of all SUN2000s to ensure equipotential connections to ground
cables.
Cable Specications
● If you connect a ground cable to the ground point on the enclosure shell, you
are advised to use a three-core (L1, L2, and L3) outdoor cable.
● If you connect a ground cable to the ground point in the maintenance
compartment, you are advised to use a four-core (L1, L2, L3, and PE) outdoor
cable.
● You need to prepare OT-M8 terminals that match the cables.
Table 5-1 AC power cable
specications
Cable Specications Copper-Core
Cable
Copper-Clad
Aluminum
Cable or
Aluminum
Alloy Cable
Conductor cross-
sectional area (mm
2
)
Range 35–70 50–70
Recommended
value
35 50
Table 5-2 Ground cable specications
Cross-Sectional Area S (mm
2
) of the
AC Power Cable Conductor
Cross-Sectional Area S
P
(mm
2
) of
the PE Cable Conductor
16 < S ≤ 35 S
P
≥ 16
35 < S S
P
≥ S/2
The values in this table are valid only if the PE cable and AC power cable use
the same conductor material. If this is not so, the cross-sectional area of the PE
cable conductor is to be determined in a manner which produces a conductance
equivalent to that which results from the application of this table.
Installing the PE Cable
Step 1 Crimp an OT terminal.
Step 2 Secure the PE cable using the ground screw.
SUN2000-(70KTL, 75KTL)-C1
User Manual 5 Electrical Connections
Issue 09 (2020-10-12) Copyright © Huawei Technologies Co., Ltd. 41
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