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Quick Installation Guide for Solar Power Inverter M50A_12s EU V4 EN 2018-10-24
DANGER
Electric shock
Potentially fatal voltages are present at the
inverter DC connections When light falls on the
solar modules, they immediately start to gener-
ate electricity This also happens when light
does not shine directly on the solar modules
► Never disconnect the inverter from the solar
modules when it is under load
► Turn the AC/DC disconnector to the
OFF
position
► Disconnect the connection to the mains so
that the inverter cannot supply energy to the
mains
► Disconnect the inverter from all AC and DC
voltage sources Ensure that none of the
connections can be restored accidentally
► Ensure that the DC cables cannot be
touched accidentally
NOTICE
Maximum power at the DC connections .
Exceeding the maximum current can cause
overheating of the DC connections
► Always take into account the maximum
current of the DC connections when
planning the installation
NOTICE
Incorrectly dimensioned solar system
.
An solar system of the wrong size may cause
damage to the inverter
► When calculating the module string, always
pay attention to technical specifications
(input voltage range, maximum current
and maximum input power), see chapter
"Technical data".
NOTICE
Ingress of moisture .
Moisture can enter via open DC connections
► To ensure protection degree IP65, close un-
used DC connections with the rubber plugs
that are attached to the DC connections
► In order to start the inverter, DC voltage
must run through both DC inputs!
Tools
The protective caps lock the DC plug so
that it can only be disconnected from DC
connections using the mounting tool
► Observe the local regulations with
regards to the protective caps
France: The protective caps must be
used
Mounting tool for disconnecting the DC
plug and the protective caps from the DC
connections Available from Multi-Contact
Polarity of the DC voltage
► Check the polarity of the DC voltage of the DC strings be-
fore connecting the solar modules
Safety notice
► Before connecting the solar modules turn the AC/DC isolat-
ing switch to the
OFF
position
Connecting the solar modules (DC)
