
30 User Manual THEIA HE-t String Inverters 357115.013, Issue 1.0, 2011 March
Positive grounded PV String
• Connect the positive connectors from the 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 customer
connection area (See 4.3.3. Grounding).
Negative grounded PV String
• Connect the grounding strap between **N5 and the DC ground terminal in the customer
connection area (See 4.3.3. Grounding).
Wiring Diagram
Positive grounded PV String
Negative grounded PV String
No Stringbox: Connector Panel
The Stringbox may be replaced with a connector panel containing plug-in connectors or cable
glands. A DC switch must then be installed separately by the system installer in compliance
with the relevant local and national electrical regulations.
Figure 4.3.12: Connector panel with optional DC
connectors
N1, N2, N3:
Negative connectors
P1, P2, P3:
Positive connectors
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