Fronius Primo GEN24 3.0 Plus, Operating Instructions Manual, Page: 58 / 160

Connecting the inverter to the public grid (AC side)
Safety
WARNING!
Danger due to incorrect operation and incorrectly performed work.
This can result in serious injury and damage to property.
▶
Read the Installation and Operating Instructions before installing and commissioning
the equipment.
▶
Only qualified personnel are authorised to commission your inverter and only within
the scope of the respective technical regulations.
WARNING!
Danger due to grid voltage and DC voltage from solar modules that are exposed to
light.
An electric shock can be fatal.
▶
Prior to any connection work, disconnect the inverter on the AC side and the DC
side.
▶
Only an authorised electrical engineer is permitted to connect this equipment to the
public grid.
WARNING!
Danger due to damaged and/or contaminated terminals.
This can result in serious injury and damage to property.
▶
Before making any connections, check the terminals for damage and contamination.
▶
Remove contamination in the de-energized state.
▶
Have defective terminals repaired by an authorised specialist.
IMPORTANT!
National standards and guidelines regarding load unbalance must be taken into account.
The inverter does not have a communication link and does not automatically disconnect
from the grid when the load unbalance is exceeded.
If the inverter is installed in Australia or New Zealand (required standard:
AS4777.2:2015), the inverter must not be used as part of a three-phase combination, as
there is no communication link between the inverters.
Connecting the
inverter to the
public grid (AC
side)
NOTE!
The neutral conductor must be connected in order to operate the inverter.
It is not possible to operate the inverter in unearthed grids, such as IT grids (insulated
grids without ground conductor).
▶
Make sure that the grid's neutral conductor is grounded.
IMPORTANT! The ground conductor of the AC cable must be laid in such a way that it is
the last to be disconnected in the event that the strain-relief device should fail.
This can be ensured by making it somewhat longer and by laying it in a loop.
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