Generac Power Systems S2502 Installation Manual page 24

Mounting and Connecting
Connecting to Inverter
See Figure 5-8. Connect each PV Link REbus (RE) output to the REbus DC nanogrid and inverter.
Figure 5-8.
REbus
Homerun
to inverter
When connecting PV Links to the inverter:
• Do not reverse the input and output or cross-wire polarity. To avoid confusion, complete the wiring of the PV Link
output before installing PV modules.
• Do not connect PV Links in series.
• Connect up to three PV Link outputs in parallel. To connect PV Links in parallel:
• Connect all negative RE (-) PV Link outputs on a home run together.
• Connect all positive RE (+) outputs on a home run together.
Current adds when connecting optimizers in parallel. The maximum output current of each PV Link is 8 A. When wiring
PV Link outputs to the inverter, observe temperature ratings and current-carrying capacity of the wire used, including
appropriate NEC derating factors.
NOTE: On a homerun the maximum number of PV Links that may be wired in parallel back to the inverter is three.
NOTE: Multiple homeruns will be necessary in larger systems.
• Connect field wiring to the PV Link with Staubli MC4 PV connectors only.
• Mark positive REbus field wiring leads with red insulation or flagging.
• Mark negative REbus field wiring leads with blue insulation or flagging.
• Connect multiple optimizers in parallel, using Staubli MC4 branch connectors or a combiner box.
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Equipment damage. Connect the PV Link output to a RE-
bus-compatible device (± 190 VDC nominal regulated DC
bus) only. Connecting to conventional PV inverters or any
other device could cause equipment damage.
REbus DC
String Wiring
(Output)
Figure 5-8. Connecting to Inverter
CAUTION
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Installation Manual for PV Link and SnapRS Installation Manual
(C000659)
PV Array
Substrings Wiring
(Input)
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