Delta PPM R4E, Installation Manual

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Forced charge mode
Although battery stops any action when SOC (state of charge) reach 0%, the self-discharge
phenomenon may still causing SOC lower than 0%.
At this time, hybrid inverter will force battery charging from PV power and grid power until
the battery SOC reaching 30%. Only in this special condition will battery be charged by
grid power. In normal operation mode, inverter only charges the battery by PV power.
Forced charge mode current flows
Electrical Grid
Hybrid Inverter
Battery
Input or
output
Forced
Charge
Input
Output
Home Load
PV Array
Forced charge mode behavior
19:00 12:00 07:00 00:00 24:00
PV power
PV power used
for home load consumption
Excess PV power
Home load power usage
79
Service Mode