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5.5.5 Use of string fuses
When connecting one or two module strings per DC input, no
string fuses are required.
+
–
DC 1
DC 2
DC 3
DC 4
DC 5
DC 6
1
Fig. 5.25:
Connection of one or two module strings per DC
input (= MPP tracker): no string fuses necessary
Note that no string fuses are installed in the
inverter! Suitable string fuses withs are available
as accessories from Delta. These string fuses
are integrated into the DC cable.
Should you require this, please contact Delta
Support by telephone. You can find the contact
information on the last page of this manual.
When selecting protective devices (such as
string fuses), always cater for the maximum cur-
rent rating of the solar modules.
Installation and Operation Manual M50A_260 RPI503M260000 Product version L and M EU V1.3 EN 2023-08-14
+
–
2
5 Planning the installation
Planning the connection of the solar modules (DC)
5.5.6 Specifications 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 infor-
mation in the following table.
DC plugs for DC cables
DC–
DC+
a
a
mm
2
DC+
4/6
5.3 ... 7.65
DC–
4/6
5.3 ... 7.65
1)
Included in scope of delivery
Specification for the DC cables
Fig. 5.26:
DC connections on the
inverter
^
b
Amphenol DC plug
mm
H4CFC4D●S
H4CMC4D●S
b
1)
43
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