Mastervolt Soladin 700 Web

3 HOW IT WORKS
The Soladin Web is a grid connected photovoltaic power
inverter. It converts the high voltage DC power coming from
the photovoltaïc (PV) panels into AC power. The AC power is
fed back into the public utility grid, see gure 3-1.
Figure 3-1: Schematic example of the Soladin in a PV plant
3.1 WORKING PRINCIPLE OF THE SOLADIN
PhotoVoltaïc (PV) modules convert light into DC power.
A series of PV modules is called a string. The string must
be connected to the solar input of the inverter. The PV
string connected to the Soladin DC input is operated at its
optimum voltage for an optimal yield (Maximum Power Point
tracking). To reduce cable losses, PV modules are connected
in series: a so-called “string”. A plane of PV modules is
called a PV array and consists of multiple strings of the same
length, being connected in parallel.
3.2 GRID CONNECTED INVERTER
See figure 3-1.
The Soladin Web main task is to convert DC power
produced by the PV modules into AC power and to feed it
back into the public utility grid.
3.3 ISOLATED INVERTER
The Soladin Web is an isolated inverter. This isolated inverter
has a High Frequency (HF) transformer inside which provides
galvanic isolation between the DC (solar) and AC (grid) side.
The Soladin is equipped with Isolation resistance detection:
it monitors PV array isolation resistance.
3.4 GRID INTERFACE
The DC PV input is inverted to an AC output: 230V AC.
For the PV input operating voltage range refer to the
specifications. Selection of country settings is mandatory for
use of the Soladin. Anti- islanding is provided according to
national standards.
The Soladin Web is not suitable to be operated in stand-
alone mode (independently from the utility grid).
The grid interface contains numerous safety mechanisms.
• Output relay to isolate the inverter form the grid.
• DC injection: Monitors DC current injection into the grid.
• Redundant grid voltage- and frequency monitoring
• Anti islanding protection: loss of utility detection
3.5 COMMUNICATION
The Soladin Web configuration is communicated with your
display via Wi-Fi. If you opt for online monitoring, the Soladin
Web communicates with your internet router via Wi-Fi as
well.
Solar
input
+
_
Soladin Web
Output
230V AC
Grid
EN / Soladin 700/1000/1500 Web User’s Manual
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