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4.7 Turning on the DC switch
Turn the DC switch 90° to the on position (position
I
).
4.8 Switching the grid voltage on for the first time
The inverter constantly monitors the quality of the mains grid. If the grid quality is
poor the inverter will automatically disconnect itself. The following applies to the
grid parameters used by the inverter for deciding to disconnect:
• Each country has its own legally defined mains grid parameters.
• The countries that are available for selection at the inverter, and their mains
grid parameters are described in
Technical data
/
Table of countries
.
• In order to select a particular country, one of the following devices must be
connected to one of the RJ45 sockets (RS485):
– Optional
StecaGrid Vision
remote display
– PC/Notebook with an RS485 interface and the
StecaGrid Service
service
software. An optional USB/RJ45 adapter cable is available.
More information is provided in the
StecaGrid Vision
and
StecaGrid Service
operating manuals.
X
The electrical connections must be made in the correct order:
1 Connect the device to the grid.
2 Connect the PV generator.
3 Turn the DC switch to on.
4 Switch on the grid line circuit breaker (automatic cutout). After switching on
the grid voltage the inverter automatically synchronises itself with the grid.
4.9 Deinstallation
Danger
Risk of death by electrocution!
X
When working on the solar power system, disconnect the inverter from the AC
power supply.
X
Turn the DC switch to off.
X
Make sure that the power supply cannot be unintentionally switched back on.
Warning
Danger of burns from arcing!
X
Do not interrupt the DC connection between the solar modules and between
the solar modules and the inverter while current is flowing.
Warning
Danger of personal injury. The inverter weighs 42 kg.
X
Always install the inverter using at least two people.
X
Use the handles on the inverter to carry the device.
To deinstall the device, follow the installation instructions in the reverse order.
Proceed as follows:
1 Turn the DC switch to off.
2 Turn the AC circuit breaker to off.
3 Disconnect all DC connectors.
4 Disconnect all AC connectors.
5 Loosen the lower fastening screws of the inverter.
6 Lift the inverter up and pull it forward to remove it from the support.
