Installation
Overview
Multi-Contact MC4 plug con-
nector system
32
x Check each solar generator string for proper operation with an open-circuit volta-
ge and short-circuit current measurement.
x Check the rating plate on the inverter to ensure that it is approved for the maxi-
mum solar generator voltage.
x The positive and negative lines must be kept electrically separate from the earth
potential.
x Touchable, live parts of the solar generator (e.g. metal frame, carrying structure,
etc.) must be earthed (connection with PE).
x Check the solar generator for freedom from short-circuits to earth.
x Before connecting the solar generator to the inverter, open the integrated DC
load break switch (position 0).
x After the solar generator is connected to the inverter and the external DC load
break switch is switched on, the direct generator voltage is present internally.
x The connectors must not be separated under load.
x Always disconnect the mains connection first by switching off the corresponding
mains fuse and before disconnecting the solar generator side by opening the DC
load break switch.
The solar generator can be directly connected to the inverter with two strings. The
connection is made via the externally accessible, shockproof Multi-Contact MC4
plug-in connection system.
The inverter has two electrically connected DC inputs, which are arranged in pairs
on the underside.
NOTE
x The solar generator strings must be identically dimensioned and match the spe-
cification of the inverter.
x No external DC load break switch is required. A DC load break switch as required
in accordance with DIN VDE 0100-712 is integrated in the inverter.
1
2
1 Terminals for solar generator string 1
2 Terminals for solar generator string 2
The Multi-Contact MC4 plug connector system is designed for convenient, reliable
connection of individual solar generators and the inverter.
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3
–
+
–
+
3 DC Load Break Switch
IPE 2700 - 5000 SN 05