Name Model/Specications Quantity Remarks
IMD DOLD RN5897.12/011, used
with the coupler DOLD
RP5898/61
1 Prepared by
the customer.
Do not connect
the
measurement
cable of the
IMD to circuit
breakers or
switches to
prevent the
measurement
loop from
being
disconnected.
DG Three-phase - Prepared by
the customer
(optional)
 
1.2 Communication Logic
One SACU or SmartLogger manages multiple ESSs, PCSs, and SUN2000s, one
meter, and one IMD to form an array. Intra-array:
● The SUN2000s communicate with the SACU or SmartLogger, the IMD
communicates with the SACU or SmartLogger, and the meter communicates
with the SACU or SmartLogger over RS485.
● The ESSs communicate with the SACU or SmartLogger over FE in star or chain
topology.
● The PCSs communicate with the SACU or SmartLogger over FE in star or ring
topology.
● Maximum communication distance of the SACU or SmartLogger:
– RS485: 1000 m
– FE: 100 m
Select either of the following topologies based on the quantities of ESSs and PCSs
in the array as well as the deployment of optical bers.
(Recommended) Typical Scenario 1: SmartLogger+ESS FE Star+PCS FE Star
Topology
In this scenario, the SmartLogger3000A is congured, and the customer needs to
prepare one switch (quantity of 10M/100M auto-sensing Ethernet ports ≥ 8). The
quantities of switches and Ethernet ports are congured based on the quantities
of ESSs and PCSs connected to the array.
Commercial and Industrial Microgrid Energy Storage
Solution
Quick Guide (With Third-Party Microgrid Central
Controller) 1 Solution Introduction
Issue 04 (2023-12-18) Copyright © Huawei Digital Power Technologies Co., Ltd. 9