Sungrow SH5K-20, Руководство пользователя

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User Manual 3 Function Description
21
Tab. 3-3 Emergency Charge Management for Li-ion Battery
Status Conditions
Trigger
Either of the following conditions is met:

SOC
≤ (Min. SOC) – 3% (valid only when the Min. SOC is ≥
3 %).

A battery under-voltage warning is triggered.

An emergency charge command is reported to the inverter.
(only for Sungrow and BYD batteries)
Finish
All the following conditions are met:

SOC
≥ (Min. SOC) – 1% (valid only when the Min. SOC is ≥
3 %).

The battery under-voltage warning is cleared.

The emergency charge command reported to the inverter is
cleared. (only for Sungrow and BYD batteries)
Tab. 3-4 Default SOC Conditions for Li-ion Battery Emergency Charge
Type Trigger SOC Finishing SOC
Sungrow (new system) Triggered by BMS Triggered by BMS
Sungrow (retrofitting system)
SOC ≤ 2 % SOC ≥ 4 %
LG
SOC ≤ 2 % SOC ≥ 4 %
GCL SOC
≤ 12%
SOC
≥ 14 %
Pylon (US2000B) SOC
≤ 17 %
SOC
≥ 19 %
TAWAKI SOC
≤ 15 %
SOC
≥ 17 %
BYD SOC
≤ 7 %
SOC
≥ 9 %
Tab. 3-5 Emergency Charge Management for Lead-acid Battery
Status Conditions
Trigger The battery voltage is under the lower limit (42 V by default).
Finish The battery voltage rises to the final discharge voltage.
Normal Charge Management
When the battery voltage is within the normal range, the inverter can charge the
battery if the PV power is higher than the load power and can ensure that the
battery is never over-charged.
The maximum allowable charge current is limited to the smaller value among
the following:

the maximum charge current of the inverter (65 A);

the maximum / recommended charge current from the battery manufacturer.
For this reason, the battery charge current value may not reach the nominal