(with a cable diameter of 11 mm the strain-relief force is reduced from 100 N to a maxim-
um of 80 N)
With cable diameters greater than 21 mm, the M32 screw joint must be replaced by an
M32 screw joint with a larger clamping area - item number: 42,0407,0780 - strain-relief
device M32x15 KB 18-25.
Connecting the
inverter to the
public grid (AC)
Note!
-
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 invert-
er.
Note!
-
Make sure that the grid's neutral conductor is grounded. This may not be the case
for IT grids (insulated grids with no earthing); it will then not be possible to use the
inverter.
-
The neutral conductor must be connected in order to operate the inverter. A neutral
conductor that is too small may adversely affect the inverter feeding energy into the
grid. The neutral conductor must have an amperage of at least 1 A.
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.
1
Fronius Symo
2
17
EN
Summary of Contents for Eco 25.0-3-M
Page 2: ......
Page 12: ...ON OFF Lock 1 2 3 4 Fitting the mount ing bracket to a wall 1 2 12...
Page 22: ...Replacing fuses ON OFF Lock AC OFF 2 CHECK VALUES 22...
Page 32: ...5 6 7 Note Observe the torque values marked on the side underneath the terminals 8 9 32...
Page 36: ...3 4 5 36...
Page 38: ...1 2 3 4 38...
Page 39: ...5 6 7 39 EN...
Page 43: ...8 9 43 EN...
Page 58: ...58...
Page 59: ...59 EN...
Page 60: ......
