Eltek Valere Theia He-t Przewodnik Instalacji Pobierz pdf (Strona 17)

Installation Guide THEIA HE-t String Inverters 357115.033, Issue 2.0, 2011 March 17

3. Stringbox with DC Switch and no DC Fuse Holders

This option is a stringbox equipped with DC switch and plug-in connectors or cable glands,

but there are no DC fuse holders.

Figure 2.3.10: Optional DC connectors and DC

switch

P1, P2, P3: Positive connectors

N1, N2, N3: Negative connectors

Figure 2.3.11: Stringbox with DC switch and no

DC fuse holders

**P1, **P2, **P3:

Terminals labeled Ungrounded

**N1, **N2, **N3:

Terminals labeled Grounded

**N4: Grounding terminal

**P4: Ungrounded terminal

**N5: Terminal for the grounding strap

DS: DC Switch

Negative grounded PV String

• Connect the grounding strap between **N5 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 terminals **N1, **N2

and **N3, and the negative conductors to the terminals **P1, **P2 and **P3.

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

• Connect the grounding strap between **N5 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 17