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Problems related to battery charging and discharging of SHxxRS and SHxxRT and the guidance of troubleshooting Battery charging and discharging problems can occur in residential energy storage inverters. There are mainly three cases: battery does not discharge, battery does not charge, and battery neither charges nor discharges.
and battery neither charges nor discharges. For abnormal battery charging and discharging, the following troubleshooting work is required: 1. Check whether the air switch between the battery and the energy storage inverter is closed (it is recommended to use a multimeter to test the battery voltage on the inverter side.
Check, if the battery does not discharge only at night, analyse the load power (as in Fig.1). When the load takes more than 150W from the power grid, the battery is allowed to discharge, otherwise the inverter will not discharge. This is to prevent that the inverter losses become comparable to the house load. 8.
2. Use iSolarCloud curve analysis interface. Check the time period when abnormal battery charging and discharging occurs. Fig.1. 3. Select on the left bar " Settings ", and then inside this tab, select the plant and click on " Advanced Settings ". Note that the Initial Grid should have been Already set. Fig. 2. 4.1.
Check in the Advanced Settings and Battery parameters if the minimum battery SOC is not set to 100%. 5. Check in the Advanced Settings and Energy Management Parameters if the Inverter Discharge Start Power is not set to the nominal power of the inverter.
1. Check whether the air switch between the battery and the energy storage inverter is closed (it is recommended to use a multimeter to test the battery voltage on the inverter side. Because the battery voltage value displayed on iSolarCloud is obtained through communicating with the battery. 2. Use iSolarCloud curve analysis interface.
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