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When selecting protective devices (such as
string fuses), always cater for the maximum
current rating of the solar modules.
Polarity of the DC voltage
► Check the polarity of the module strings before con-
necting the solar modules.
The inverter has an integrated function for detecting
reverse polarity on the DC connections. If such reverse
polarity is detected, the inverter triggers an error message.
This error message is indicated by the alarm LED as
soon as the inverter is switched on.
Specification for the DC cables
The DC plugs for all DC connectors are supplied with the
inverter.
The DC plugs are only suitable for copper wire.
You can download the assembly instructions for the DC
plugs from Amphenol at: www.amphenol-solar.com.
If you want to order more or need a different size, see the
information in the following table.
CAUTION: Use only genuine Amphenol plugs to minimize
the risk of arcing.
DC connections on the
inverter
DC–
DC+
Installation manual M250HV_112 (RPI254M112000) Product Version 0 EU V1.0 EN 2022-04-11
DC plugs for DC cables
^
Connecting the solar modules
a
a
2
mm
DC+
4/6
5.3 ... 7.65
DC–
4/6
5.3 ... 7.65
1)
Included in scope of delivery
Special tools required
Always use the Amphenol mounting tools to release the
DC connectors. 2 mounting tools are included in the pack-
age.
General information
b
Amphenol DC plug
mm
H4CFC4D●MS
H4CMC4D●MS
b
1)
27
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