Danfoss DLX 4.6 Podręcznik Użytkownika Pobierz pdf (Strona 27)

User Guide DLX Series L00410623-1 27

Negative Grounded PV String

Figure 4.3.10: Negative grounded PV string

• The inverter is delivered from the

factory in an ungrounded PV string

configuration as standard.

• Connect the grounding strap between

N5 (fig. 4.3.9) and the DC ground

receptacle labeled GND/PE in the

inverter lower compartment.

Positive Grounded PV String

Figure 4.3.11: Positive grounded PV string

• Connect the positive conductors (+)

to the terminals labeled 2.Grounded,

and the negative conductors (-) to

the terminals labeled 1.Ungrounded.

• Switch the conductors connected to

N4 and P4 (fig. 4.3.9).

• Connect the grounding strap between

N5 (fig. 4.3.9) and the DC ground

receptacle labeled GND/PE in inverter

lower compartment.

4.3.4.4. Connection Procedures

• The DC conductors connecting the PV array to the inverter must each have a minimum

rating of 600 V

at any operating temperatures.

• The DC conductor cables must be sized for correct temperature rating and sunlight

resistance. Use copper wire with a cross-section area of between 6 mm

to16 mm

/ 10

AWG to 6 AWG and temperature rating 90° C /194° F for all connections. Ensure

compliance with the relevant national electrical regulations!

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Danfoss DLX 4.6 Podręcznik Użytkownika Strona 27