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System Configuration
2–40 976-0043-01-02
On-Grid Applications
The Sine Wave Plus can be combined with utility power to provide
backup power in the event of a primary power source failure. It can use
utility power to backup renewable energy systems. It can use renewable
energy and/or a generator to backup utility grid power. It can be used as
an energy management tool to optimize energy consumption.
Backup Systems
Renewable Energy
Backup (BX Mode)
This configuration uses renewable energy sources as the primary source
of power to operate the AC loads and grid power as an automatic backup
source.
Utility Backup
(SB Mode)
In this configuration, the utility grid is the main source of power. The
energy stored in the batteries only provide backup power in the event of a
grid failure. Batteries can be charged by the utility grid when available,
RE sources, or with a backup generator.
Single-Inverter Configurations (120 Vac)
If only 120 Vac output is required from the system, a single inverter is
adequate to provide the required power, depending on the wattage
requirements of the total system.
See Appendix F, “Multi-wire Branch Circuit Wiring”, for information on
multi-wire branch circuits.
Single-Inverter Configurations (240 Vac)
If 240 Vac output is required from the system and the total of the loads
does not exceed the wattage output of the inverter, a step-up
autotransformer can be added to the output of the system to increase the
voltage output.
See Figure 2-21 for an example of a single inverter configuration for
either 120 Vac or 120/240 Vac output. Disregard any part of this
illustration that does not apply to the system configuration being installed.