Eltek Valere Theia He-t Przewodnik Instalacji Pobierz pdf (Strona 15)

Installation Guide THEIA HE-t String Inverters 357115.033, Issue 2.0, 2011 March 15

There are three different configurations of the string box options:

1. Stringbox with DC fuse holders and DC switch

2. Stringbox with DC fuse holders and no DC switch

3. Stringbox with DC switch and no DC fuse holders

1. Stringbox with DC Fuse Holders and DC Switch

The stringbox can be equipped with DC fuse holders, DC switch and plug-in connectors or

cable glands.

Figure 2.3.6: Optional DC connectors

P1, P2, P3: Positive connectors

N1, N2, N3: Negative connectors

Figure 2.3.7: Stringbox with DC fuse holders and

DC switch

*N4: Grounding terminal and terminal for

the grounding strap

*P4: Ungrounded terminal

TB: Terminal Block

TBS: Terminal Block Screw

DS: DC Switch

Negative grounded PV String

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

connection area (See 2.3.2. Grounding).

Positive grounded PV String

• Connect the positive conductors 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 internal

connection area (See 2.3.2. Grounding).

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Eltek Valere Theia He-t Przewodnik Instalacji Strona 15