Generac Power Systems PV Link 010023, Installation Manual

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Installation Manual for PV Link and SnapRS 11
Section 4 PVRSS Compliance Guidelines
2011 NEC and Older Editions
2011 NEC and older editions do not require
PVRSS compliance.
NOTE: The PV Link will still provide 2014
NEC compliant PV Rapid Shutdown.
2014 NEC
The 2014 NEC 690.12 introduced a new
requirement for PV systems that is commonly
referred to as PV rapid shutdown.
To meet 2014 NEC compliance:
1. Install the PWRcell Inverter as specified in
the Generac PWRcell Inverter Installation
Manual.
2.
Install the PV Link as specified in this man -
ual.
3. The DC disconnect under the PWRcell
Inverter cover labeled PV by the installer
can be used as the PVRSS initiation
device. See Rapid Shutdown in the Gen -
erac PWRcell Inverter Installation and
Owner’s Manual for more information.
4.
The Remote STOP terminals under the
PWRcell Inverter cover labeled “STOP”
can be used for PVRSS initiation. If the
PWRcell system includes PWRcell Bat -
tery/ies, the battery/ies must have a bat -
tery management unit (BMU) with optional
STOP terminal hardware. See Generac
PWRcell Battery Installation and Owner's
Manual for instructions. An external actua -
tor must be provided by the installer.
Appropriate signage, in compliance with
the NEC must be provided by the installer
indicating the function of the external actu -
ator.
Rapid shutdown response time is less than 10
seconds.
2017 and 2020 NEC
The 2017 and 2020 NEC have PVRSS
requirements mandating the need to reduce
voltages of controlled conductors to less than
80 VDC within the array, and less than 30
VDC outside the array, as well as some speci -
fication for the location of the PVRSS initiator
and its labeling.
To meet 2017 and 2020 compliance:
1. The 2017 and 2020 NEC requires the
PVRSS initiator be located at a readily
accessible location outside the building.
– The DC disconnect under the PWRcell
Inverter cover labeled PV by the
installer can be used as the PVRSS ini -
tiation device.
– An external actuator, connected by the
installer to the PWRcell Inverter's
STOP terminals can be used as the
PVRSS initiation device. If the PWRcell
system includes PWRcell Battery/ies,
the battery/ies must have a battery
management unit (BMU) with optional
STOP terminal hardware. See Generac
PWRcell Battery Installation and
Owner's Manual for instructions.
NOTE:
Provide signage indicating the PVRSS
initiation device is the REbus PV DC discon -
nect located under the front cover of the
inverter, or the external actuator connected to
the STOP terminals.
– An externally mounted PVRSS initia -
tion device is required to be installed at
a readily accessible location when the
PWRcell Inverter is installed within a
one- or two-family dwelling unit.
NOTE: Provide signage indicating where
PVRSS initiation devices are located. Note
that if the inverter is installed in the appropri -
ate outdoor location it may satisfy this require -
ment.
2. Provide signage complying with section
690.56(C) of the NEC (NFPA 70), stating
all conductors are controlled.
NOTE:
Install one SnapRS to the negative
whip (-) of each PV module connected to the
PV Link.
3.
Install the PV Link. See Installation Guide -
lines for more information.
Upon initiation of rapid shutdown, both inputs
and outputs of the PV Link are controlled to be
less than 80 VDC. PV Link outputs are further
controlled to be less than 30 VDC. Rapid shut -
down response time is less than 30 seconds
in accordance with section 690.12 of the NEC
(NFPA 70).