Charge Requirements For Batteries In Low Soc - Huawei LUNA2000-7-S1 User Manual

LUNA2000-(7, 14, 21)-S1
User Manual
Table 7-4 Fuse model
No
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1
2
3

7.5 Charge Requirements for Batteries in Low SOC

After batteries are powered off, static power consumption and self-discharge loss
may occur in internal modules. Therefore, charge batteries in a timely manner and
do not store batteries in low SOC. Otherwise, the batteries may be damaged due
to overdischarge and Energy Storage Modules need to be replaced.
Storing the batteries in low SOC may occur in the following scenarios:
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●
●
●
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Regardless of scenarios, the batteries must be charged within the longest interval
corresponding to the SOC when the batteries are powered off. If the batteries are
not charged within the specified interval, they may be damaged due to
overdischarge.
Power-Off SOC Before Storage
SOC ≥ 5%
0% ≤ SOC < 5%
Issue 01 (2024-03-27)
Fuse Model Manufacturer
0828040.UXT LITTELFUSE
HP
FWL-38A14F Cooper Xi'An Fusegear
RS309- Sinofuse Electric
MM-14C43A
The DC SWITCH on the Energy Storage Control Unit is OFF.
The power cables or signal cables are not connected.
The batteries cannot be charged due to a system fault after discharge.
The batteries cannot be charged due to incorrect configurations in the system.
The batteries cannot be charged due to no PV input and long-term mains
failure.
NO TE
● When the battery SOC decreases to 0%, charge the batteries within seven days.
Permanent battery faults caused by delayed charge due to customer reasons are not
covered by the warranty.
● When the battery SOC is low due to self-discharge loss or extended periods of storage
without being charged, the system forcibly charges the batteries to prevent damage
from overdischarge. Additionally, in situations where the PV power is insufficient, the
system will draw power from the grid regardless of the Charge from AC threshold.
Copyright © Huawei Digital Power Technologies Co., Ltd.
Maximum Charge Interval
30 days
7 days
7 ESS Maintenance
110