4.2.4 Grounding the ESS
Prerequisites
● The grounding should comply with the local electrical safety regulations.
● Do not connect devices such as fuses and switches to ground cables.
● Connect ground cables to the ground points of the ESS enclosure or the main
ground bar of the control unit cabin based on site requirements.
● The ESS is installed.
● The grounding requirements are clear.
Context
The ESS can be grounded using ground lugs or ground cables. The requirements
are as follows:
● Ground lug: Use ground lugs made of hot-dip zinc-coated
at steel with a
cross-sectional area of 40 mm x 4 mm, and the concrete platforms must be
300 mm above the ground.
● Ground cable
Table 4-3 Ground cable description
No.
Cable Type Cross-
Sectional
Area
Outer
Diameter
Source
1 Ground
cable
Single-
core
outdoor
copper
cable and
M12
OT/DT
terminals
16–240
mm
2
10–32 mm Prepared
by the
customer
The specications of the ground cable are subject to this table or calculated
according to IEC 60364-5-54.
Connect ground cables
Method 1：Connect ground cables to the ground points of the ESS enclosure
Step 1 Connect ground cables to the ground points of the ESS using M12x30 stainless
steel bolt assemblies. The ground cables can be routed through plastic-coated
metal hoses based on site requirements.
LUNA2000-2.0MWH-1H0, 2H0 Smart String ESS
User Manual 4 Installation
Issue 02 (2021-11-15) Copyright © Huawei Technologies Co., Ltd. 78
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