14
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
※1: THE-S55P3BB-USW 3.0kW
THD-S55P3BB-US 3.0kW
THD-S55P3B-US
1.5kW
※2: THE-S55P3BB-USW 4.0kW
THD-S55P3BB-US 4.0kW
THD-S55P3B-US
2.0kW
(Initial mode)
HOME BACKUP Mode keeps the storage batteries fully charged at all times. Once charged, the system goes on
standby as a safeguard against power outages on the commercial power grid.
The display may not show that the storage batteries are fully charged due to a margin of error.
Use the inverter as an emergency power supply for instances such as rolling blackouts, etc. Use of the Storage
Mode is recommended since it keeps the storage batteries fully charged at all times. If an outage is anticipated
while using the inverter in another mode, you can switch to the Storage Mode ahead of time and minimize the
impact of the outage by having the storage batteries fully charged.
Surplus PV-generated power is used to charge the storage batteries.
Any power that cannot be stored in the storage batteries is sold.
Power is discharged from the storage batteries. If there is not enough
power coming from the PV system and storage batteries, power is
purchased from the power company.
ECONOMY Mode
ECONOMY Mode minimizes the amount of purchased electricity
purchased from the grid by utilizing PV-generated power during the day,
in the evening, and at night.
HOME BACKUP Mode
Power is stored
F
Stored power is
discharged
G
Power Generated,
Household Load (kW)
Time
5
4.5
4
3.5
3
2.5
2
1.5
1
0.5
0
Charging up to
max. 3.0 kW
※1
Power Selling
Household Load
Solar Power Generation
Discharge up to
max. 4.0 kW
※2
F
G
At extremely low SOC, the battery output power may be slightly decreased.
Modes and Mechanisms