Sungrow SH3K6 - Charge Management

User Manual 3 Function Description
23
State Definition
In order to avoid overcharging or deep discharging of the battery, distinguish
four battery statuses according to different voltage ranges, as shown in the
following table.
Tab. 3-6 Battery Status Definition
Type
Port Voltage / SOC
Damaged
Empty
Normal
Full
SUNGROW
(new system)
< 28 V
SOC < 5 %
5 %...100 %
SOC =
100 %
SUNGROW
(retrofitting
system or with
the forced charge
function enabled)
< 28 V
SOC < 10 %
10 %...100 %
SOC =
100 %
LG
(RESU G1/G2)
< 30 V
SOC < 5 %
5 %...100 %
(by default)
SOC > 95 %
GCL
< 30 V
SOC < 15 %
15 %...95 %
(by default)
SOC > 95 %
Pylon
(US2000B),
TAWAKI
< 30 V
SOC < 20 %
20 %...100 %
(by default)
SOC =
100 %
BYD
< 30 V
SOC < 10 %
10 %...100 %
(by default)
SOC =
100 %
Other lead-acid
< 30 V
Configured by the customer
* The SOC limits of Li-ion batteries except Sungrow batteries can be modified
via the iSolarCloud App or the iSolarCloud server by qualified personnel.
3.3.1 Charge Management
Emergency Charge Management
To avoid the damage caused by long time excessive discharge,

For lead-acid battery, if the battery voltage is under the lower limit, the
system will enter emergency charge management.

For Li-ion battery, if the battery SOC is under the lower limit, the system will
enter emergency charge management.
The inverter cannot respond to the discharge command during emergency
charge. The following table describes the emergency charge of different types
of batteries.
Tab. 3-7 Emergency Charge Description
Type
Trigger Condition
Finishing Condition
SUNGROW (new system)
Not applicable
Not applicable