Soc Calibration Instructions; Calibration Before Initial Commissioning Or After Long-Term Storage; Calibration During System Operation - Sungrow PowerTitan-ST2064UX System Manual

10 SOC Calibration Instructions

10.1 Calibration Before Initial Commissioning or After Long-term
Storage
The battery system shall be tested according to the nominal power of the product before
being put into operation for the first time or after being stored for over 6 months. A standard
calibration process includes three phases: fully discharge, time of repose (2.5 h), and fully
charge, as described below.
step 1 Click Param settings on the WEB page of LC and set the work mode of the LC to Local.
step 2 Click Param settings -> SOC Parameters on the WEB page of LC to set the working range
of SOC from 0% to 100%.
step 3 Fully discharge: Fully discharge the battery until the system SOC reaches 0%.
step 4 Time of repose: Let the system rest for 2.5 h for SOC calibration, and there should be no
charge or discharge current during this period. There is no requirements for auxiliary power
supply.
step 5 Fully charge: Fully charge the system until the system SOC reaches 100% after the time of
repose ends.
- - End
The capacity calibration process can be adjusted to "fully charge, time of repose (2.5 h), and
fully discharge" according to the site conditions. Restore the work mode of the LC and the
working range of SOC to default settings after calibration.

10.2 Calibration During System Operation

The battery system SOC shall be tested according to the nominal power of the product if the
battery system fails to automatically calibrate the SOC due to being in frequency modulation
status or being charged and discharged incompletely in a long time. A standard calibration
process includes two phases: fully discharge, and time of repose(2.5 h), as described below.
step 1 Click Param settings on the WEB page of LC and set the work mode of the LC to Local.
step 2 Click Param settings -> SOC Parameters on the WEB page of LC to set the lower limit of
SOC working range to 0%
step 3 Fully discharge: Fully discharge the battery until the system SOC reaches 0%.
step 4 Time of repose: Let the system rest for 2.5 h for SOC calibration, and there should be no
charge or discharge current during this period. There is no requirements for auxiliary power
supply.
- - End
53