Eltek Valere Theia He-t Manual de usuario descargar pdf (Pagina 28)

28 User Manual THEIA HE-t String Inverters 357115.013, Issue 1.0, 2011 March

2. Stringbox with DC Fuse Holders and no DC Switch

The Stringbox can be equipped with DC fuse holders and plug-in connectors or cable glands,

but no DC switch. A DC switch must be installed separately by qualified persons in

compliance with the relevant local and national electrical regulations.

Figure 4.3.8: Optional DC connectors and no DC

switch

P1, P2, P3:

Positive connectors

N1, N2, N3:

Negative connectors

BP: Blanking Plug

Figure 4.3.9: Stringbox with DC fuse holders and

blanking plug

*N4:

Grounding terminal and terminal for the

grounding strap

*P4:

Ungrounded terminal

Positive grounded PV String

• Connect the positive connectors from the positive connectors to the terminal block labeled

Grounded, and the negative conductors to the terminal block labeled Ungrounded.

• Switch the conductors connected to *N4 and *P4.

• Connect the grounding strap between *N4 and the DC ground terminal in the customer

connection area (See 4.3.3. Grounding).

Negative grounded PV String

• Connect the grounding strap between *N4 and the DC ground terminal in the customer

connection area (See 4.3.3. Grounding).

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Eltek Valere Theia He-t Manual de usuario Pagina 28