The various operating modes
Operating modes
– Explanation of
symbols
PV module
generates direct current
Fronius GEN24 inverter
converts direct current into alternating current and charges the bat-
tery (a battery support is required to charge the battery, see Function
overview on page15). The integrated system monitoring enables the
inverter to be integrated into a network by means of WLAN.
Additional inverter in the system
converts the direct current into alternating current. However, it can-
not charge a battery, and is not available in backup power mode.
Battery
is coupled to the inverter on the direct current side, and stores elec-
trical energy.
Fronius Ohmpilot
to use excess energy to heat water.
Primary meter
records the system's load curve and provides measurement data for
energy profiling in Fronius Solar.web. The primary meter also controls
the dynamic feed-in control.
Secondary meter
records the load curve of individual loads (e.g. washing machine,
lamps, TV, heat pump, etc.) in the consumption branch and provides
measurement data for energy profiling in Fronius Solar.web.
Loads in the system
are the loads connected in the system.
Additional loads and producers in the system
are connected to the system by means of a Smart Meter.
PV Point
is a non-uninterruptible 1‑phase backup power circuit that supplies
electrical devices with up to 3 kW if sufficient power is available from
the PV modules or the battery.
Full Backup
the inverter is prepared for backup power mode. The backup power
mode must be implemented in the switch cabinet by the electrician
performing the installation. The PV system operates in a stand-alone
manner in backup power mode.
Grid
supplies the loads in the system if insufficient power is being gener-
ated by the PV modules or supplied by the battery.
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