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Quick Installation Guide for Solar Power Inverter M50A_12s EU V4 EN 2018-10-24
The inverter can be connected to 3-phase grids
without neutral conductors (3P3W, 3
PE) and 3-phase grids with neutral conductors
(3P4W, 3 N + PE)
► If makes no difference which individual
wire of the AC cable is connected to which
contact
► If the inverter is connected to a grid without
a neutral conductor, the AC connection must
be changed via the display to 3P3W after
commissioning, see “AC connection type”,
page 23
Connecting to a 3-phase grid with a neutral conductor
(3P3W)
L1
L2
PE
L3
Connecting to a 3-phase grid without a neutral conductor
(3P4W)
L1
L2
PE
N
L3
1 Pull all necessary parts of the AC plug over the cable The
parts required depend on the cable diameter, see figure on
the following page
2 Remove the insulation from the cable and wires Do not
twist the wire ends because this reduces the contact sur-
face area with the wire end sleeves
22 ± 2 mm
95 mm
+0
-5
95 mm
+0
-5
3 Affix ferrules as shown on the following table.
Conductor cross-
section
Use wire end-sleeves?
25 mm
2
Yes
> 25 mm
2
No
4 There are two connecting screws per conductor
Always
fasten all wires with both connecting screws
3 Nm
2 x
Connecting the mains (AC)
