Connecting To Inverter; Connecting Pv Modules; 2014 Nec And Earlier Editions - Generac Power Systems PV Link Installation Manual

Mounting and Connecting

Connecting to Inverter

CAUTION
Equipment damage. Connect the PV Link output to a REbus-
compatible device (± 190 VDC nominal regulated DC bus)
only. Connecting to conventional PV inverters or any other
device could cuase equipment damage.
See Figure 5-3. Connect each PV Link output to the
REbus DC nanogrid and inverter.
Figure 5-3. Connecting PV Link Optimizer
When connecting optimizers to the inverter consider the
following:
• 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 Link optimizers in series.
• Connect multiple PV Link outputs in parallel. To
connect in parallel, connect RE- to RE- and RE+ to
RE+.
• 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: Multiple home-runs will be necessary in larger
systems.
• Connect field wiring to the PV Link with MC4 PV
connectors (Multi-Contact P/N: 32.0010P0001-UR/
32.0011P0001-UR or equivalent).
• 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 MC4
branch connectors (Multi-Contact P/N: 32.0018/
32.0019 or equivalent).
12

Connecting PV Modules

Equipment damage. Never leave the PV Link MC4 connectors
open and exposed to the atmosphere overnight or during
rain. Unwired connectors should remain plugged together as
originally packaged. Failure to do so could cause equipment
damage.
(000659)
Equipment damage. Never connect PV Link to any other
power source. The optimizer is designed to work with series
connected PV modules only. Connecting the optimizer to any
other power source could cause equipment damage.
NOTE: Warranty does not cover water ingress through
wiring from external connections due to poor wiring prac-
tices.
010027

2014 NEC and Earlier Editions

For NEC 2014 compliant systems, connect the substring
PV modules in series.
To install PV modules in series:
1. Connect the negative lead of the first module in the
string to the PV Link at the location marked PV
Substring Input (-). See
PV Input location.
2. Connect the first module's positive lead to the sec-
ond module's negative lead.
3. Continue connecting the substring module leads in
series until the last module is reached.
4. Connect the positive lead of the last module in the
substring to the PV Link at the location marked PV
Substring Input (+). See
for PV input location.
CAUTION
(000657)
CAUTION
(000661)
Component Locations
Component Locations
Installation Manual for PV Link
for