6
5. After the green indicator of the BCU blinks at super short intervals and the red indicator is
steady on, switch on the battery circuit breaker on the battery cabinet.
Switch off the battery circuit breaker in the battery cabinet. (If multiple
SmartLi cabinets are connected in parallel, perform this operation on
each cabinet.)
Press and hold the POWER ON/OFF button on the BCU for more than 5s until
all the three indicators blink to power off the system. (If multiple SmartLi
cabinets are connected in parallel, perform this operation on each cabinet.)
Copyright © Huawei Digital Power Technologies Co., Ltd.
2022. All rights reserved.
08
Power-Off
Item
Description
Default Value Value Range
Application scenario
Specifies the SmartLi connection scenario.
Currently, the UPS and EHU scenarios are
supported.
UPS
UPS, HVDC,
EHU, SST
Number of lead-acid
batteries supported
(The value of this
parameter must be
the same as the
setting of Batteries
in a battery string
on the UPS
monitoring screen.)
When the SmartLi is connected to the UPS
without communication, the UPS manages
the SmartLi based on the lead-acid battery
logic. You need to set the number of lead-
acid batteries supported for the UPS on
the SmartLi monitoring screen to ensure
that the charge and discharge operating
voltage ranges of the UPS and SmartLi
match each other.
By default, Number of lead-acid
batteries supported is set based on the
single battery voltage (2 V). If the single
battery voltage in the UPS system is 12 V,
convert it to 2 V before setting this
parameter. For example, if the single
battery voltage is 12 V and the number of
batteries in a battery string is 42, the value
of Number of lead-acid batteries
supported is 252 (42 x 12/2 = 252) in the
7+7/7+0 scenario.
8+8/8+0
scenario: 276
8+8/8+0
scenario: 276–
300
7+7/7+0
scenario: 252
7+7/7+0
scenario: 240–
270
6+6/6+0
scenario: 204
6+6/6+0
scenario: 192–
234
Battery cabinet
quantity
Specifies the number of battery cabinets
connected in parallel.
Currently, a maximum of 10 lithium
battery cabinets can be connected in
parallel.
1
1–10
Altitude (m)
Set this parameter based on the altitude of
the place where the rack is used.
≤ 1000
≤ 1000, 1000–
2000, 2000–
3000, 3000–
4000
Chg. cur. limiting
coef. (C)
You can set a charge current limit. The
limiting coefficient is a multiple of the
battery capacity.
0.5
0.05–1.00
Cell undervoltage
protection threshold
(V)
You can adjust the end-of-discharge (EOD)
threshold as required.
2.7
2.5–2.8
Battery
undervoltage
protection time (h)
Specifies the maximum battery discharge
time.
8
8–3000
Maintenance period
(y)
Specifies the interval for reminding users
of battery maintenance.
0
0–10
Last maintained at
After the maintenance is complete, you
can set the time as a reference for the
next maintenance.
-
-
SmartLi 3.0 Quick Guide (Short-Term Backup Power)
•
If battery modules will be stored for a long time after power-off, remove the BCU to
reduce battery discharge. This prevents battery modules from being overdischarged due
to storage at low SOC.
•
If battery modules are stored without being fully charged, charge them according to the
requirements in "Operations > Recharge Requirements for Batteries with Low SOC" to
prevent battery module damage due to overdischarge.
•
When you hold the button to power off a cabinet, only the indicators on the cabinet
where the software version is later than V500R022C00SPC100 will blink.
The preceding procedure applies to the single-cabinet scenario. For the multi-cabinet
scenario, see
SmartLi 3.0 User Manual (Short-Term Backup Power)
.
