Step Task Precaution
4 Installing the
DTSU666-HW
N/A
5 Installing the
SACU or
SmartLogger
N/A
6 Installing PE
cables
● The ground point inside the ESS must be connected,
and the ground point outside the ESS is optional.
● The ground point in the AC maintenance
compartment of the PCS serves only as the
equipotential bonding point of the PE point and
cannot replace the PE point of the enclosure.
● The ground points of all PCSs in the same array
need to be connected to ensure equipotential
bonding to ground cables.
● To enhance the corrosion resistance of a ground
terminal, you are advised to apply silicone grease or
paint on it after connecting the ground cable.
7 Installing DC
power cables
● DC power cables (with corrugated pipes) between
the ESS and PCS are delivered with the ESS.
● Reserve sucient length for the DC power cables
between the ESS and the PCS, and add angle steel
in the middle of the foundation to support the
cables and reduce the stress on the cables.
8 Installing AC
power cables
● When the inverters and PCSs are connected in
parallel respectively on the two sides of the
isolation transformer, the cable length between
each PCS and the parallel connection point must be
greater than or equal to 6 m.
● AC power cables must be connected in the correct
phase sequence. Ensure that the phase sequence of
the AC power cables of the PCS is consistent with
that of the isolation transformer and power grid.
Otherwise, the system may fail to run properly.
9 Installing
communicatio
ns cables
For details about the cable connections, see 1.2
Communication Logic.
Commercial and Industrial Microgrid Energy Storage
Solution
Quick Guide (With Third-Party Microgrid Central
Controller) 2 Installation and Cable Connection
Issue 04 (2023-12-18) Copyright © Huawei Digital Power Technologies Co., Ltd. 16
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