Requirements For The Neutral Conductor; Connecting The Inverter To The Public Grid (Ac); Routing The Ac Cables - Fronius Galvo 1.5 Installation Instructions Manual

Requirements for Note!
the neutral con- -
ductor
-
Connecting the
1
1
inverter to the
public grid (AC)
3
3
Torque (Nm / lbf.in.)
→ see printing near
wire terminal
Note! Observe the torque values marked on the side
underneath the terminals.
Routing the AC Note!
cables -
-
IMPORTANT! The PE 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, for example, by making it somewhat longer and by laying it in a loop.
If AC cables are laid over the shaft of the DC main switch or across the connection block
of the DC main switch, they may be damaged when the inverter is swung in, or they may
even prevent the inverter from being swung in.
Ensure that the grid neutral conductor is grounded. This may not be the case for IT
grids (insulated grids with no grounding); it will then not be possible to use the inverter.
In order to use the inverter, the neutral conductor must be connected. A neutral con-
ductor that is too small may adversely affect the inverter feeding energy into the grid.
The neutral conductor must therefore be the same size as the other live conductors.
1
OFF
Cu / Al Cu
> 250 mm
PE
15 mm
> 200 mm
Form loops with the AC cables when connecting them to the AC terminals.
When securing the AC cables using a metric screw joint, ensure that the loops do not
protrude beyond the connection area.
Otherwise, under certain circumstances it may no longer be possible to close the in-
verter.
2
2
max. Class 4
AC ~
4
4
7,5 Nm
17