Function Overview; Device Concept; Intended Use - Fronius Symo 3.0-3-S Serviceanleitung

Function Overview

Device concept

The inverter has been designed exclusively for use in grid-connected photovoltaic sys-
tems. It cannot generate electric power independently of the grid.
The inverter automatically monitors the public grid. Whenever conditions in the electric
grid are inconsistent with standard conditions (e.g., grid switch-off, interruption), your
inverter will immediately stop operating and interrupt the supply of power into the grid.
The grid is monitored by monitoring the voltage, monitoring the frequency and monitoring
islanding conditions.
The inverter is fully automatic. The inverter starts monitoring the grid as soon as the
solar modules are generating enough energy after sunrise. The inverter resumes the grid
power feed operation when there is sufficient direct sunlight.
The control system of the inverter ensures that the maximum possible power output is
drawn from the solar modules at all times.
As soon as there is no longer sufficient energy available for the grid power feed opera-
tion, the inverter shuts down the power electronics connection to the grid completely and
stops operating. All settings and recorded data are saved.
When its temperature gets too high, the inverter automatically reduces the current output
power in order to protect itself.
Reasons for the temperature being too high include a high ambient temperature or insuf-
ficient heat dissipation (e.g., inadequate heat dissipation when installed in switch cabi-
nets).

Intended Use

The inverter is designed exclusively to convert direct current from solar modules into
alternating current and feed this power into the public grid.
The following are deemed to be not in conformity with its intended purpose:
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The manufacturer is not responsible for any damage resulting from improper use.
All warranty claims are considered void in such cases.
70
(1) (2)
(6) (5)
Utilization for any other purpose, or in any other manner
Alternations to the inverter are not expressly recommended by Fronius
Installation of components that are not expressly recommended or sold by Fronius.
Unit design:
(3)
(1) Housing cover
(2) Inverter
(3) Mounting bracket
(4) Connection area including DC
main switch
(5) Data Communication Area
(6) Data communication cover
The inverter transforms the direct current
generated by the solar modules into alter-
nating current. This alternating current is
fed into the public grid and synchronized
(4)
with the mains voltage in use.