PVI 10KW / PVI 13KW / PVI 15KW Installation and Operation Manual
DOC-020028 rev 028
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This is because with larger wires, the AC voltages at the inverter will be closest to the voltages at
the building’s circuit panel.
Connection of the PV-panels to the DC disconnect enclosure with or without
integrated fused PV combiner
WARNING:
Follow PV module manufacturer’s directions. PV-arrays produce
electrical energy when exposed to light and could create a hazardous condition. (One
method used to assure safety from shock is to completely cover the surface of all PV-
arrays with opaque (dark) material before wiring them.)
Depending on the type of PV-modules used it is possible to use several parallel strings. (Appendix
B shows some example PV string sizing tables.)
WARNING:
Before connecting the connectors of the PV-panel to the DC disconnect
enclosure fused PV combiner (if equipped) or + and – terminal block if not equipped
with combiner check the correct polarity and admissible PV-panel voltage between
the + and the - cable connectors of the PV panel.
The PV-panel open circuit voltage must be below 475V DC (V
pv
< 475 V DC) under
all conditions as per NEC 690-7. Please read the Technical Info section and see PV
string sizing table in Appendix B. All string sizing is approved by Solectria
Renewables for your benefit upon order of inverter(s)
Inverter with fused PV combiner in DC disconnect enclosure:
There are 6-7 fuse blocks for up to 6-7 PV strings of 10-15A fuse rated PV module strings. The
positive (+) wire from each string is connected to each fuse block bottom screw terminal. There
are also 7 negative positions to be used for negative (-) connections on the negative (-) terminal
blocks. (Note that these instructions are reversed for inverters equipped with the positive
grounding option.)
Inverter without fused PV combiner in the DC disconnect enclosure:
There is a positive and negative terminal block for connection of a combined PV power feed from
a customer-provided external fused PV combiner.
WARNING:
A fused, correctly rated PV combiner must be used with this version of
the inverter.
WARNING:
Even when in the off position, the DC disconnect will remain live on
the PV side (“line”) when the PV modules are in daylight. The inverter (“load”) side
