Generac Power Systems PV Link, Руководство по установке

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Installation Manual for PV Link and SnapRS 7
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 -
tors leaving the array. SnapRS devices are
required for PV module level rapid shutdown.
See
PVRSS Compliance Guidelines
for more
information.
Component Locations
PV Link Component Locations
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
E
C
F
D
A
B
G
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