About Pv Link; About Generac Snaprs; Gfci Information; Afci Information - Generac Power Systems PV Link Installation Manual

About PV Link

The PV Link is a nonisolated, interleaved DC-
DC converter that boosts PV input to a higher
voltage and outputs it to Rebus™, Generac's
regulated 380 VDC bus. The PV Link provides
droop-mode power management, enabling
multiple optimizers to connect in parallel on a
common bus, and its DC output carries a bidi-
rectional power line communication (PLC)
protocol for communicating with inverters and
other devices on REbus.
The PV Link is sealed in a type 3R enclosure
at the factory and is designed for attachment
to standard PV racking. Safety features
include ground fault detection, arc fault detec-
tion, and rapid shutdown capability.

About Generac SnapRS

SnapRS is an inline PV rapid-shut down
device that satisfies 2017 and 2020 NEC
690.12 PV rapid shutdown system (PVRSS)
requirements. When used with PV Link,
SnapRS devices limit all controlled conductors
within an array's 1 ft (305 mm) boundary to 80
VDC or less within 30 seconds of rapid shut-
down initiation.

GFCI Information

The PV Link's internal ground-fault circuit
interrupter (GFCI) is designed to trip at 240
mA (± 40 mA) of PV DC voltage ground cur-
rent. Ground faults are displayed on the PWR-
cell inverter control panel. The PV Link meets
the ground-fault protection requirements in
NEC Article 690.41(B).

AFCI Information

The PV Link is a Photovoltaic DC Arc-Fault
Circuit Protection Type 1 device that incorpo-
rates an internal arc fault circuit interrupter
(AFCI) and meets the Arc-Fault circuit protec-
tion requirement in NEC Article 690.11.

PVRSS Information

PV rapid shutdown system (PVRSS) require-
ments have evolved over time and are defined
by the National Electrical Code (NEC) in con-
junction with UL 1741. Determine what level of
rapid PV shutdown is required for your juris-
diction.
• The 2011 NEC and older editions do not
require PVRSS capability.
• The 2014 NEC requires rapid shutdown
only on the conductors leaving the PV
array.
• The 2017 and 2020 NEC require rapid
shutdown at the PV module level and on
the conductors leaving array.
PV Link is a PV rapid shutdown system equip-
ment (PVRSE) component within a PVRSS. It
only provides rapid shutdown for the conduc-
Installation Manual for PV Link and SnapRS
tors leaving the array. SnapRS devices are
required for PV module level rapid shutdown.
See PVRSS Compliance Guidelines
information.

Component Locations

PV Link Component Locations
C
D
G
Figure 2-5. Component Locations
A
Attachment Flange Slots
B Grounding Terminals (sized for 1/4 in hard-
ware)
C REBus DC Nanogrid Output Negative (-)
Lead
D
REBus DC Nanogrid Output Positive (+)
Lead
E
PV Substring Input Negative (-) Lead
F PV Substring Input Positive (+) Lead
G MC4 Connectors
for more
A
B
E
F
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