General; Device Concept; Proper Use - Fronius Primo 3.0-1 Operating Instructions Manual

General

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 design and function of the inverter provide a maximum level of safety during both in-
stallation and operation.
The inverter monitors automatically the public grrid. Whenever conditions in the electric
grid are inconsistent with standard conditions (for example, grid switch-off, interruption),
the inverter will immediately stop operating and interrupt the supply of power into the grid.
Grid monitoring is carried out using voltage monitoring, frequency monitoring and monitor-
ing islanding conditions.
The inverter is fully automatic. Starting at sunrise, as soon as the solar modules generate
enough energy, the inverter starts monitoring grid voltage and frequency. As soon as there
is a sufficient level of irradiance, the solar inverter starts feeding energy into the grid.
The inverter ensures that the maximum possible power output is drawn from the solar mod-
ules at all times.
As there is no longer sufficient energy available to feed power into the grid, the inverter
shuts down the grid connection completely and stops operating. All settings and recorded
data are saved.
If the inverter temperature exceeds a certain value, the inverter derates automatically the
actual output power for self protection.
The cause for a to high inverter temperature can be found in a high ambient temperature
or an inadequate heat transfer away (eg for installation in control cabinets without proper
heat dissipation).

Proper use

The solar inverter is intended exclusively to convert direct current from solar modules into
alternating current and to feed this into the public grid.
Utilisation not in accordance with the intended purpose comprises:
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-
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Fronius shall not be liable for any damage resulting from such action.
No warranty claims will be entertained.
8
(1) (2)
(6) (5)
utilisation for any other purpose or in any other manner
making any modifications to the inverter that have not been expressly approved by
Fronius
the installation of parts that are not distributed or expressly approved by Fronius.
Device construction:
(3)
(1) Housing cover
(2) Inverter
(3) Wall bracket
(4) Connection area incl. 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 into AC current. This alternating cur-
rent is fed into your home system or into the
public grid and synchronized with the volta-
(4)
ge that is used there.