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Figure 10. DC Electric Box
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Figure 11. DC Electric Box location
Figure 12. Correct crimping pliers
Earth Pin MG
PE
STRING 1
STRING 2
TYCO CONNECTORS
2
Wire RV-K 6mm Black
Figure 13. Example of a single line scheme for the DC Electric Box
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WIRING DIAGRAM
WDU 10
TYCO CONNECTORS
INVERTER
3. PV KIT INSTALLATION
3.3.
DC Electric Box (available as an optional extra).
3.3.1.
Components
The DC Electric Box contains one type two overvoltage discharger for
protection against indirect lightening strikes.
3.3.2.
Location
The DC Electric Box should be placed at the input on the inverter. If the
cable length between the PV generator and the inverter is longer than
10 m, an additional protection should be used next to the PV generator.
(Figure 11)
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3.3.3.
Electric Scheme
Figure 8 shows an example of a single line diagram of the DC switch-
board. If the PV generator is composed of 3 or more strings, string fuses
should be added to the DC Electric box.
3.3.4.
Crimp connectors
When the crimping of connectors is needed to create whips, correct crim-
ping pliers should be used. The left figure shows the pliers required to
crimp the connectors.
Earth wire 6mm
HO7Z1-K
OK CHANGE
(Figure 10)
(Figure 12)
2
PE
OVP Weidmüller
Ref. 8882340001
OK CHANGE
13
Solargen solar PV
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