
User Manual THEIA HE-t String Inverters 357115.013
,
Issue 1.0, 2011 April
29
Wiring Diagram
Positive grounded PV String
Negative grounded PV String
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 no DC fuse holders.
Figure 4.3.10: Optional DC connectors and DC
switch
P1, P2, P3:
Positive connectors
N1, N2, N3:
Negative connectors
Figure 4.3.11: 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
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