Generac Power Systems PWRcell XVT076A03 Installation instructions

SAVE THIS MANUAL FOR FUTURE REFERENCE
Register your Generac product at:
WWW.GENERAC.COM
1-888-GENERAC
(1-888-436-3722)
Register your Generac product at:
https://pwrfleet.generac.com
1-888-GENERAC
(888-436-3722)
Para español, visita: http://www.generac.com/service-support/product-support-lookup
Pour le français, visiter: http://www.generac.com/service-support/product-support-lookup
Installation and Owner’s Manual
Generac PWRcell® Inverters
XVT076A03
XVT114G03
X7602
X11402
009954
(000209b)
WARNING
Loss of life. This product is not intended to
be used in a critical life support application.
Failure to adhere to this warning could result
in death or serious injury.

ii Installation and Owner’s Manual for Generac PWRcell Inverter
Use this page to record important information about your Generac Product
Record the information found on your unit data label on this page. See Serial Number Location.
When contacting an Independent Authorized Service Dealer (IASD) or Generac Customer Service, always supply the complete
model number and serial number of the unit.
Table 1: PWRcell Inverter Important Information
Unit Model Number
Unit Serial Number
Date Purchased
Commissioning Date
(000393a)
WARNING
CANCER AND REPRODUCTIVE HARM
www.P65Warnings.ca.gov.

Installation and Owner’s Manual for Generac PWRcell Inverter iii
Section 1: Safety Rules & General
Information
Introduction ..........................................................1
Read This Manual Thoroughly ....................................1
Safety Rules .........................................................1
How to Obtain Service .................................................1
General Hazards ..................................................2
Electrical Hazards ................................................3
Section 2: General Information
Specifications ......................................................5
Serial Number Location ......................................6
Unit Dimensions .................................................6
Component Locations .........................................6
About PWRcell Inverters .....................................6
Inverter Control Panel .........................................7
REbus Status LED ......................................................7
Inverter Status LED .....................................................7
Internet Status LED .....................................................7
Shutdown Mode ...................................................7
Section 3: Location and Compliance
Location ................................................................9
Compliance ..........................................................9
Photovoltaic Rapid Shutdown ..........................10
PVRSS Initiation ........................................................10
PVRSS Self-Test .......................................................11
Voltage and Frequency Trip Thresholds .........12
Voltage Trip Thresholds ............................................12
Frequency Trip Thresholds .......................................12
Section 4: Installing PWRcell Inverter
Mounting Clearances ........................................13
Mounting Bracket Dimensions .........................13
Mounting the Inverter ........................................14
Section 5: Electrical Connections
Accessing Wiring Compartment ......................15
PWRcell Inverter Wiring Compartment ............15
Wiring Guidelines ..............................................17
Grounding Bar Wiring ....................................... 17
DC Wiring ........................................................... 18
STOP Terminal Wiring (XVT Models Only) ...... 18
For PV only installations without a
PWRcell Battery: .......................................................18
For Installations with a PWRcell Battery: ..................18
AC Wiring ........................................................... 19
Protected Loads ................................................ 20
Whole Home Backup ......................................... 22
AC Coupled PV .................................................. 23
Connecting Ethernet ......................................... 23
Configuring Static IP Settings .......................... 24
Verifying Connectivity ................................................25
Current Transformers (CTs) ............................. 26
Connecting Current Transformers .............................26
Connecting CTs to the Inverter .................................26
Connecting Multiple Sets of CTs ...............................27
Connecting CTs to Multiple PWRcell
Systems /Inverters ....................................................27
CT Calibration ...........................................................27
Other Accessories ............................................. 29
PWRcell ATS .............................................................29
Load Management Options .......................................29
Section 6: Commissioning
Commissioning the System ............................. 31
Connect to High Speed Broadband Internet ... 31
Register System ................................................ 31
Connect PWRcell Inverter to AC Power .......... 31
Select Inverter System Mode ........................... 32
Configure Inverter Settings .............................. 32
Adjusting Inverter Settings ........................................32
Configuring with PWRcell Batteries ...........................34
Set Export Override (optional) ...................................34
Set for Peak Shaving (optional) .................................34
Set for AC Coupled PV (optional) ..............................34
Enable REbus Devices ..................................... 35
Test Island Mode ............................................... 36
Configure Time of Use (optional) ..................... 36
Configuring and Running a TOU Schedule ...............36
Enabling Beacon TOU ...............................................37
Disabling Beacon TOU ..............................................38
Temporarily Overriding the TOU Scheduler ..............38

iv Installation and Owner’s Manual for Generac PWRcell Inverter
Disabling the TOU Scheduler in Anticipation of a
Grid Outage .............................................................. 39
Access Installer Configuration Tool
(optional) ............................................................39
How to Access the Installer Configuration Tool ........ 39
Configuring Basic PWRcell Settings ......................... 40
Verifying Inverter Firmware Version .......................... 40
Set Inverter Grid Compliance (optional) ..........40
Proof of Compliance ................................................. 41
Set Import / Export Compliance (optional) ......41
Commissioning Multiple Inverter Systems .....42
PLM Crosstalk ........................................................... 42
How to identify PLM Crosstalk .................................. 43
Multiple Inverter System Pre-Commissioning
Checklist ................................................................... 43
Multiple Inverter System Commissioning Procedure 43
PLM Crosstalk Recovery Procedure ......................... 44
Section 7: System Operation
General Information ...........................................45
Operation and User Interface ...........................45
Home Screen ......................................................45
Home Screen Icons ...........................................45
Activating the System Post Permission to
Operate (PTO) ....................................................46
Activating Post PTO: System Operating ................... 46
Activating Post PTO: System Disabled ..................... 46
Confirm Inverter Settings .......................................... 48
PV Only System ........................................................ 48
PV + Battery w / a Protected Loads Panel for
Partial Home Backup ................................................ 48
PV + Battery w / a PWRcell ATS and SMMs for
Whole Home Backup ................................................ 49
AC PV + Battery w / a PWRcell ATS and SMMS ..... 49
System Modes Overview ...................................51
Grid Tie ..................................................................... 51
Self Supply ................................................................ 51
Clean Backup ............................................................ 52
Priority Backup .......................................................... 52
Remote Arbitrage ...................................................... 53
Sell ............................................................................ 53
Island Mode ........................................................53
Section 8: Maintenance
Service ................................................................ 55
Accessing Wiring Compartment ...................... 55
Replacing Fuses ................................................ 55
Annual Maintenance ......................................... 56
Inspecting Vents ....................................................... 56
Cleaning Intake Filter ................................................ 56
Section 9: Troubleshooting
General Troubleshooting .................................. 57
Overload Behavior ........................................... 58

Safety Rules & General Information
Installation and Owner’s Manual for Generac PWRCell Inverter 1
Section 1: Safety Rules & General Information
Introduction
Thank you for purchasing a Generac PWRcell® product.
The Generac PWRcell Inverter is a storage-ready
inverter that connects to the PV Link™ optimizers and
PWRcell Batteries to form the Generac PWRcell system.
This manual provides instructions for installing the
PWRcell Inverter, including mounting, wiring, and battery
integration information.
The information in this manual is accurate based on
products produced at the time of publication. The
manufacturer reserves the right to make technical
updates, corrections, and product revisions at any time
without notice.
Read This Manual Thoroughly
If any section of this manual is not understood, contact
the nearest Independent Authorized Service Dealer
(IASD) or Generac Customer Service at 1-888-436-3722
(1-888-GENERAC), or visit www.generac.com for assis-
tance. The owner is responsible for correct maintenance
and safe use of the unit.
This manual must be used in conjunction with all other
supporting product documentation supplied with the
product.
SAVE THESE INSTRUCTIONS for future reference. This
manual contains important instructions that must be fol-
lowed during placement, operation, and maintenance of
the unit and its components. Always supply this manual
to any individual that will use this unit, and instruct them
on how to correctly start, operate, and stop the unit in
case of emergency.
Safety Rules
The manufacturer cannot anticipate every possible
circumstance that might involve a hazard. The alerts in
this manual, and on tags and decals affixed to the unit,
are not all inclusive. If using a procedure, work method,
or operating technique that the manufacturer does not
specifically recommend, verify that it is safe for others
and does not render the equipment unsafe.
Throughout this publication, and on tags and decals
affixed to the unit, DANGER, WARNING, CAUTION, and
NOTE blocks are used to alert personnel to special
instructions about a particular operation that may be
hazardous if performed incorrectly or carelessly. Observe
them carefully. Alert definitions are as follows:
NOTE: Notes contain additional information important to
a procedure and will be found within the regular text of
this manual.
These safety alerts cannot eliminate the hazards that
they indicate. Common sense and strict compliance with
the special instructions while performing the action or
service are essential to preventing accidents.
How to Obtain Service
For assistance, contact the nearest Independent Autho-
rized Service Dealer (IASD) or Generac Customer Ser-
vice at 1-888-436-3722 (1-888-GENERAC), or visit
www.generac.com.
When contacting an IASD or Generac Customer Service,
always supply the complete model and serial number of
the unit as given on its data decal located on the unit.
Record the model and serial numbers in the spaces pro-
vided on the front cover of this manual.
(000100a)
Consult Manual. Read and understand manual
completely before using product. Failure to
completely understand manual and product
could result in death or serious injury.
WARNING
(000001)
DANGER
Indicates a hazardous situation which, if not avoided,
will result in death or serious injury.
(000002)
WARNING
Indicates a hazardous situation which, if not avoided,
could result in death or serious injury.
(000003)
CAUTION
Indicates a hazardous situation which, if not avoided,
could result in minor or moderate injury.

Safety Rules & General Information
2 Installation and Owner’s Manual for Generac PWRCell Inverter
General Hazards
•Connecting the PWRcell Inverter to the electric util-
ity grid must only be done after receiving prior
approval from the utility company.
•If this installation is in Canada, the installation shall
be in accordance with the Canadian Electrical
Code, Part I.
•Only competent, qualified personnel should install,
operate, and service this equipment. Strictly com-
ply to local, state, and national electrical and build-
ing codes. When using this equipment, comply with
regulations established by the National Electrical
Code (NEC), CSA Standard, and the Occupational
Safety and Health Administration (OSHA), or the
local agency for workplace health and safety.
•Protection against lightning surges in accordance
with local electric codes is the responsibility of the
installer.
NOTE: Lightning damage is not covered by warranty.
•Never work on this equipment while physically or
mentally fatigued.
•Any voltage measurements should be performed
with a meter that meets UL3111 safety standards,
and meets or exceeds overvoltage class CAT III.
WARNING - This photovoltaic rapid shutdown equipment
(PVRSE) does not perform all of the functions of a com-
plete photovoltaic rapid shutdown system (PVRSS). This
PVRSE must be installed with other equipment to form a
complete PVRSS that meets the requirements of NEC
(NFPA 70) section 690.12 for controlled conductors out-
side the array. Other equipment installed in or on this
photovoltaic (PV) system may adversely affect the opera-
tion of the PVRSS. It is the responsibility of the installer to
ensure that the completed PV system meets the rapid
shutdown functional requirements. This equipment must
be installed according to the manufacturer’s installation
instructions.
Follow all instructions included in this manual and use
appropriate practices for all product wiring and
installation.
(000188)
DANGER
Electrocution. Do not wear jewelry while
working on this equipment. Doing so will
result in death or serious injury.
(000191)
DANGER
Automatic start-up. Disconnect utility power and
render unit inoperable before working on unit.
Failure to do so will result in death or serious injury.
(000187)
WARNING
Electrocution. Potentially lethal voltages are generated
by this equipment. Render the equipment safe before
attempting repairs or maintenance. Failure to do so
could result in death or serious injury.
Risk of injury. Do not operate or service this machine
if not fully alert. Fatigue can impair the ability to
operate or service this equipment and could result in
death or serious injury.
(000215a)
WARNING
(000209b)
WARNING
Loss of life. This product is not intended to
be used in a critical life support application.
Failure to adhere to this warning could result
in death or serious injury.
(000640)
WARNING
Equipment damage. Connecting inverter to electric utility
grid must only be done after receiving prior approval
from utility company. Failure to do so could result in
equipment or property damage.
(000155a)
WARNING
Electric shock. Only a trained and licensed electrician
should perform wiring and connections to unit. Failure to
follow proper installation requirements could result in death,
serious injury, and equipment or property damage.
(000182a)
WARNING
Equipment damage. Only qualified service personnel may
install, operate, and maintain this equipment. Failure to
follow proper installation requirements could result in death,
serious injury, and equipment or property damage.
Equipment damage. Connect only to REbus-compatible
devices to the DC bus. Never connect to any other DC
power source. Connecting to other DC power sources
could result in equipment damage. (000598a)
CAUTION

Safety Rules & General Information
Installation and Owner’s Manual for Generac PWRCell Inverter 3
Electrical Hazards
(000104)
DANGER
Electrocution. Water contact with a power
source, if not avoided, will result in death
or serious injury.
(000604)
Electrocution. PWRcell Battery front cover should
be removed by a qualified technician only.
Removing the front cover could result in death,
serious injury, equipment or property damage.
DANGER
(000145)
DANGER
Electrocution. In the event of electrical accident,
immediately shut power OFF. Use non-conductive
implements to free victim from live conductor. Apply
first aid and get medical help. Failure to do so will
result in death or serious injury.
(000599)
Electrocution. Turn battery disconnect OFF and
de-energize REbus before touching terminals.
Failure to do so will result in death, serious injury,
equipment and property damage.
DANGER
(000152)
DANGER
Electrocution. Verify electrical system is
properly grounded before applying power.
Failure to do so will result in death or serious
injury.

Safety Rules & General Information
4 Installation and Owner’s Manual for Generac PWRCell Inverter
This page intentionally left blank.

Installation and Owner’s Manual for Generac PWRcell Inverter 5
General Information
Section 2: General Information
Specifications
Description Units XVT076A03
X7602
XVT114G03
X11402
Max. cont. grid-tied AC power @ 122°F (50ºC) kW 7.6 11.4
Max. cont. AC power in island mode without an external transfer
switch1kW 7.6 7.6*
Max. cont. AC power in island mode w/ external transfer switch and
single 6 module battery cabinet2kW 9.0 --
Max. cont. AC power in island mode w/ external transfer switch and 2
battery cabinets (8 modules minimum)2kW 11.0 --
Peak motor starting current (2 sec) A rms 50
Normal output frequency AC Hz 60
Grid Voltage Line to Neutral (L-N) VAC 120
Grid Voltage Line to Line (L-L) VAC 240 208
Peak efficiency % 97.3 97.7
Optimal split phase imbalance for max. system performance % ≤ 30
Maximum Current Unbalance % -- 0.14
CEC weighted efficiency % 96.5 97.5
AC terminals wire size AWG 14 to 6
DC terminals wire size AWG 18 to 6
STOP terminals wire size AWG 30 to 14
Weight lb (kg) 70.9 (32.1)
Thermal management – forced convection
Weatherization rating – NEMA Type 3R
Enclosure Material – powder-coated steel
Description Units Min Nominal Max
REbus voltage V dc 360 380 420
REbus current A dc 30†
REbus input short circuit current3A dc 30
Max input circuit backfeed current (fault condition) A dc 0
Output power factor rating AC (25%, 50%, 100% of rated power) - 0.96 0.98 0.99
Operating voltage range AC, XVT076A03 / X7602 (L-N) V rms 106 120 132
Operating voltage range AC, XVT076A03 / X7602 (L-L) V rms 212 240 264
Operating voltage range AC, XVT114G03 / X11402 (L-N) V rms 106 120 132
Operating output voltage range AC, XVT114G03 / X11402 (L-L) V rms 184 208 228
Continuous output current AC grid-tied A rms 32
Output controlled current grid-tied A rms 0 32
Continuous output current AC islanded1A rms 45
Synchronization Inrush Current A rms/p-p 32.1 / 94.83
Output fault current duration A / ms 50 / 2,000
Protected Loads output overcurrent protection A 50
Full Power operating ambient temperature range4 °F (°C) -4 (-20) +122 (+50)
Utility interconnection voltage and frequency trip limits and trip times
See Voltage and Frequency Trip Thresholds for
more information.
Trip voltage and frequency limits
Trip voltage accuracy
Trip time accuracy % 2% +/- 2 cycles
1 In Island Mode, continuous current output is restricted to 32 A unless backup power is routed through an external transfer switch.
2 Peak performance, values provided for 104º F (40º C)
3 Rating for one DC input. Four total.
4 Includes ambient temperature rising from inverter operation.
* In Island Mode, XVT114G03/X11402 produces 2 phases of 120 VAC L-N and 208 VAC (L-L) which results in lower power than when operating
grid-tied.
†Inverter limits its REbus current to adhere to its AC power rating. Total REbus current capability from multiple REbus sources may safely
exceed this value as the inverter safely limits the amount utilized.

6 Installation and Owner’s Manual for Generac PWRcell Inverter
General Information
Serial Number Location
Refer to Figure 2-2 to locate unit serial number (D).
Record the information from this tag in Table 1: PWRcell
Inverter Important Information on the inside front cover
of this manual.
Unit Dimensions
Figure 2-1. Unit Dimension
Component Locations
Figure 2-2. Component Locations
About PWRcell Inverters
The PWRcell Inverter connects PV Link™ optimizers and PWRcell Batteries to form the PWRcell system for grid-
interactive solar-plus-storage. Upon the loss of utility grid power, PWRcell Inverters disconnect from the grid and
provide AC power to support protected loads when configured to do so. This capability is referred to as islanding. For
more information, see Island Mode in Section 6:Commissioning.
PWRcell Inverters use the REbus™ 380 VDC nanogrid to connect DC-coupled PWRcell devices. The REbus nanogrid
automates the flow of power to enable plug-and-play setup and operation of PWRcell equipment. For more information
about REbus, visit www.generac.com. In Figure 2-3 PWRcell Inverter (E) is directly connected to PV Link optimizers
(B) and PWRcell Battery (C) on DC (REbus) lines (D). To the right of the inverter are AC lines: 120/240 VAC or 208
VAC for grid and home loads (G) and protected loads (H).
.
Figure 2-3. Generac PWRcell System Example
A24-3/4 in (628 mm)
B19-3/8 in (491 mm)
C8-3/8 in (214 mm)
B
A
C
009955
AControl Panel
BIntake Filter
CExhaust Vent
DSerial Number Tag
009654
A
B
C
D
ASolar Panels DREbus GLoads
BPV Link EPWRcell Inverter HProtected Loads
CPWRcell Battery FGrid
009893
A
C
D
E
FG
H
B
B
B
D

Installation and Owner’s Manual for Generac PWRcell Inverter 7
General Information
Inverter Control Panel
Figure 2-4. Inverter Control Panel
See Figure 2-4. The PWRcell system is controlled
through the PWRcell Inverter control panel. The inverter
control panel is used for adjusting system settings and for
interacting with devices.
REbus Status LED
REbus Status LED (C) communicates REbus nanogrid
status through LED color.
Inverter Status LED
Inverter LED (D) communicates the status of the utility
grid and / or inverter through LED color and state.
Internet Status LED
Internet LED (G) is illuminated when the inverter has a
connection to the Generac server. Internet LED (G) will
slowly strobe when REbus Beacon is updating its
firmware.
Shutdown Mode
NOTE: A loss of grid power will not de-energize REbus
in a PWRcell system configured to enter Island Mode
with enabled energy storage.
Shutdown button (E) activates a transition to shutdown
mode.
Disabled PWRcell equipment limits output voltages to a
safe level for servicing.
After pressing the Shutdown button and entering
Shutdown Mode, the AC section of the inverter will still be
powered, unless there is an active utility service
interruption, or the AC solar backfeed breaker, AC solar
disconnect, building AC disconnect, or main service
breaker is shut off.
To enter shutdown, press and hold shutdown button (E).
In shutdown mode:
•The PWRcell Inverter will stop sourcing power to
REbus, and immediately disable all communicating
power sources on REbus by sending a system-
wide system mode change signal.
NOTE: Successful signal transmission relies upon
proper configuration of PLM channels across REbus
devices (PV Links and Batteries).
•Shutdown LED (F) will illuminate.
•Inverter screen (A) will display REbus DC bus volt-
age and text indicting Shutdown mode has been
initiated.
ALCD Display EShutdown Button
BNavigation Keys FShutdown LED
CREbus Status LED GInternet LED
DInverter LED HSelect
LED Color REbus Status
Green All devices are enabled and functioning
normally on REbus.
Yellow One or more devices are disabled, or no
devices are detected.
Red A serious fault has been detected on a
device or the REbus wiring.
LED Color Inverter Status
Green Utility is connected and within normal
operational voltage and frequency.
Green Blinking
Inverter is in Island Mode due to a utility
service interruption. Utility is not within
normal operational voltage and frequency.
Yellow Inverter is disabled or powering up.
Yellow Blinking
Inverter is waiting to connect to the grid, in
the process of connecting to REbus, or
waiting to connect to REbus.
Red
Inverter is overloaded, or a serious fault
has been detected on the inverter. Manual
intervention is likely required before the
equipment will resume operation.
No Light Inverter is powered down.
REbus Inverter
Internet
Shutdown
(hold)
A
D
C
B
G
E
F
H
009894
LED Color Internet Status
Blue Internet connected
Blue Strobing
Internet connected and Beacon firmware
auto-update is in progress.
Note: Do not power off the inverter or
unplug REbus Beacon while update is in
progress.
No Light Not internet connected.
(000600)
DANGER
Electrocution. Initiate a system-wide shutdown and turn the
PWRcell DC Disconnect Switch OFF on all connected
batteries before performing service. Failure to do so will
result in death, serious injury, or equipment and property
damage.

8 Installation and Owner’s Manual for Generac PWRcell Inverter
General Information
This page intentionally left blank.

Location and Compliance
Installation and Owner’s Manual for Generac PWRcell Inverter 9
Section 3: Location and Compliance
Location
When installing the PWRcell Inverter, consider the follow-
ing:
•The unit can be installed in indoor or outdoor loca-
tions.
•If installing indoors, an external switch must be
installed to be the PV rapid shutdown initiator, or
additional DC disconnects must be sourced and
installed on the PV circuits. See Photovoltaic
Rapid Shutdown for more information.
•If installing outdoors, mount the unit near the utility
service entrance to allow the inverter DC discon-
nects to be the compliant PV rapid shutdown initia-
tors. See Photovoltaic Rapid Shutdown for
more information.
•If using the inverter DC disconnects as the compli-
ant PV rapid shutdown initiator(s), verify the height
of the DC disconnects in the inverter do not exceed
6' 7" (2 m) to comply with NEC Article 404.8(A).
•The inverter installation location must meet the
working space requirements in NEC Article 110.26.
Compliance
Note on DC Wiring and the NEC
Some electricians or installers may be unfamiliar with DC
wiring in a residential setting. Note the following:
•NEC 690.31 for DC PV circuits in buildings
•NEC 215.12(C)(2) for correct DC wiring identifica-
tion
Always adhere to applicable codes when marking and
installing DC conductors. See Table 3-1: REbus DC Wir-
ing Coloring Convention. Mark or flag all conductors for
their polarity as appropriate.
•It is recommended that REbus (+) conductors NOT
be green, white, gray, blue, or black.
•It is recommended REbus (-) conductors NOT be
green, white, gray, or red.
(000190)
DANGER
Loss of life. Property damage. Installation must
always comply with applicable codes, standards, laws
and regulations. Failure to do so will result in death
or serious injury.
WARNING
Electrocution. Refer to local codes and standards for
safety equipment required when working with a live
electrical system. Failure to use required safety
equipment could result in death or serious injury.
(000257)
(000182a)
WARNING
Equipment damage. Only qualified service personnel may
install, operate, and maintain this equipment. Failure to
follow proper installation requirements could result in death,
serious injury, and equipment or property damage.
Table 3-1. REbus DC Wiring Coloring Convention
Wire Color
REbus + (RE+) Red
REbus - (RE-) Black
Ground (GND) Green

Location and Compliance
10 Installation and Owner’s Manual for Generac PWRcell Inverter
Photovoltaic Rapid Shutdown
The PV Link, SnapRS, and PWRcell Inverter are certified as Photovoltaic Rapid Shutdown Equipment (PVRSE).
Review Table 3-2: PVRSS Requirements and PWRcell PVRSE to determine what PWRcell equipment is required to
constitute an effective Photovoltaic Rapid Shutdown System (PVRSS). Refer to Generac PV Link & SnapRS Installa-
tion manual for more information on proper installation of those devices including commissioning instructions.
Following PV rapid shutdown initiation, controlled conductors will be brought within the limits defined in NEC 690.12 as
described in Table 3-2 above. The controlled conductors include:
•REbus conductors connecting PV Link(s) to the PWRcell Inverter (conductors leaving the array).
•PV conductors between modules in PV Link PV substring (conductors inside the array boundary).
NOTE: AC conductors exiting and entering the inverter are not considered controlled conductors for this application.
NOTE: Depending on the installation conditions (panel type, ambient temperature, etc.), leakage current methods
detailed in UL 1703, Section 21 may be used to indicate compliance with the stated limits as permitted by UL 1741,
Section 93.1.2.
PVRSS Initiation
There are three approved methods for initiating PV rapid shutdown with PWRcell equipment. Each method effectively
disconnects the PV input circuits from the inverter's internal DC bus. This disconnection is detected by the PV Links,
which in turn interrupt the PV source circuits. Interruption of the PV source circuits opens SnapRS devices, isolating PV
modules within the array. All three methods are considered suitable for installations where the inverter is located
outside of a one-family or two-family dwelling. In most situations, only Method 2 (external switch) or Method 3 (installer-
sourced DC disconnect) will be appropriate for installations where the Inverter is located inside of a one-family or two-
family dwelling (where the external device is located outside of the dwelling near the utility service entrance).
Appropriate signage and/or markings in compliance with NEC 690 must be provided by the installer.
Method 1 - PVRSS initiation via PWRcell Inverter DC disconnect(s) (outdoor installations)
1. Open the inverter lid.
2. Locate the PWRcell DC disconnects located to the left of the Generac Power Core.
3. Turn DC disconnects connected to PV sources to the OFF position.
Method 2 - PVRSS initiation via external switch connected to inverter STOP terminals (indoor and outdoor
installations)
NOTE: If installation includes a PWRcell Battery, the battery must be equipped with external STOP terminals. Battery
STOP terminals must be wired in series or parallel to the inverter STOP terminals. See PWRcell Battery Installation
& Owner's Manual for more details.
1. A UL listed, 12 VDC, 1 A, lockable, weatherproof switch must be connected to the STOP terminals to use this
method.
Table 3-2. PVRSS Requirements and PWRcell PVRSE
NEC Adoption PVRSS Requirements (NEC 690.12) Required PWRcell PVRSE*
2011 or older No PVRSS requirements. N/A
2014
Controlled conductors leaving array limited to not
more than 30 volts within 10 seconds of rapid
shutdown initiation.
Generac PV Link(s)
2017, 2020 and follows
Controlled conductors leaving array limited to not
more than 30 volts within 30 seconds of rapid
shutdown initiation.
Controlled conductors located inside the array
boundary (or not more than 1 m (3ft) from the
point of penetration of the surface of the building)
shall be limited to not more than 80 volts within 30
seconds of rapid shutdown initiation.
Generac PV Link(s),
Generac SnapRS
(one per PV module)
*Depending on approved method used, the PVRSS may include the Generac PWRcell Inverter but the inverter is not required for an effective
PVRSS.

Location and Compliance
Installation and Owner’s Manual for Generac PWRcell Inverter 11
a. The switch must indicate ON and OFF positions, where the OFF position opens the STOP terminal circuit.
STOP circuit terminals are normally closed.
2. Turn switch to the OFF position.
3. Upon initiation, the inverter display will read “Shutdown Initiated”.
See Section 5: Electrical Connections STOP Terminal Wiring (XVT Models Only) for installation instructions.
Method 3 - PVRSS initiation via installer-sourced DC disconnect(s) (indoor and outdoor installations)
1. A UL listed, lockable, weatherproof DC disconnect rated for at least 420 VDC and 30 A must be installed
between the PV conductors leaving the junction box and the inverter DC inputs.
a. The switch must indicate ON and OFF positions, where the OFF position opens the PV circuit.
2. Turn DC disconnects to the OFF position.
NOTE: This equipment shall be installed and operated in an environment within the ratings and limitations of the equip-
ment as published in these installation instructions.
PVRSS Self-Test
After commissioning, a PVRSS self-test can be performed to validate the functionality of the PVRSS using one of the
methods described above. Alternatively, functionality of the PVRSS can be validated for a substring using the following
instructions.
1. On the PWRcell Inverter control panel, press the right arrow key until the first PV Link device page appears.
NOTE: The device page display should read Disabled. If it does not read Disabled, press the center button and disable
the PV Link.
2. Press the center button and select “Test PVRSS” to enter the ‘Testing PVRSS’ state. The display indicates ‘Test-
ing PVRSS’ during the test process, which can take up to three minutes. Upon successful completion, the display
will read ‘Test Success’.

Location and Compliance
12 Installation and Owner’s Manual for Generac PWRcell Inverter
Voltage and Frequency Trip Thresholds
This unit or system is provided with fixed trip limits and shall not be aggregated above 30 kW on a single point of com-
mon coupling.
All PWRcell Inverters are shipped from the factory in compliance with all UL 1741 requirements, including IEEE 1547.
If permission to operate (PTO) is dependent on compliance to a specific utility standard, follow the steps covered in the
Set Inverter Grid Compliance (optional) section in this manual.
Voltage Trip Thresholds
See Table 3-3 for the default fixed voltage trip setpoints. All over voltage and under voltage trip conditions result in a
300-second restart delay time after the trip threshold has been exceeded for the listed number of cycles.
The inverter is disconnected from the grid during this 300-second delay.
Frequency Trip Thresholds
See Table 3-3 for the default fixed frequency trip setpoints. All over frequency and under frequency trip conditions
result in a 300-second restart delay time after the trip threshold has been exceeded for the listed number of cycles.
The inverter is disconnected from the grid during this 300-second delay.
*Value of 999 indicates a disabled threshold for voltage trips.
**Value of zero indicates a disabled threshold for frequency trips.
Table 3-3. Voltage Trip and Frequency Thresholds
Voltage Trip Thresholds Frequency Trip Thresholds
Threshold Threshold
(% of nominal) No. of Cycles Threshold Threshold (% of nominal) No. of Cycles
OV4 999* 1 OF4 0** 1
OV3 130 1 OF3 0** 1
OV2 120 10 OF2 0** 1
OV1 110 60 OF1 0.5 10
UV1 88 120 UF1 0.7 10
UV2 50 10 UF2 0** 1
UV3 999* 1 UF3 0** 1
UV4 999* 1 UF4 0** 1

Installing PWRcell Inverter
Installation and Owner’s Manual for Generac PWRcell Inverter 13
Section 4: Installing PWRcell Inverter
Mounting Clearances
Figure 4-1. PWRcell Inverter Dimensions and Mounting Clearances
Mounting Bracket Dimensions
Figure 4-2. Mounting Bracket Dimensions
4 in
(10.16 cm)
28 in
(71.15 cm)
8 in
(20.32 cm)
28-1/2 in
(72.4 cm)
36 in
(91.44 cm)
8 in
(20.32 cm)
19-1/4 in
(48.9 cm)
8-1/2 in
(21.6 cm)
20 in
(50.8 cm)
8 in
(20.32 cm )
24-1/2 in
(62.23 cm)
010508
16 in
(40.64 cm)
1-1/2 in
(3.81 cm)
2-3/8 in
(6.03 cm)
009990

Installing PWRcell Inverter
14 Installation and Owner’s Manual for Generac PWRcell Inverter
Mounting the Inverter
1. Verify mounting location adheres to the following
requirements:
•Location must meet all PWRcell Inverter
requirements listed in Section 3 of this manual.
See Location and Compliance for more
information.
•Inverter must be mounted upright on a vertical wall.
•Never obstruct intake or exhaust vents.
•Never allow water to enter intake or exhaust vents.
•Observe all mounting clearances. See Mounting
Clearances.
2. Secure mounting bracket mounting surface
through mounting holes.
•Fasteners must adequately secure the 62.7 lbs
(28.4 kg) inverter weight to the wall.
•Fasteners must be suitable for the mounting
surface.
•Fasteners must engage at least two studs or other
structural members.
•Mounting bracket has clearance holes for 1/4 in
fasteners with slots to accommodate different stud
spacings.
3. See Figure 4-3. Insert mounting bracket tabs (A)
into inverter body slot (B).
NOTE: Figure 4-3 is for illustration purposes only.
Figure 4-3. Mounting Inverter onto Bracket
4. See Figure 4-4. Secure the bottom of the inverter
to wall with two fasteners through mounting holes
(C). Holes are spaced at 11 1/4 in. from each other.
Use anchors or blocking as needed.
Figure 4-4. Mounting Holes
(000641a)
CAUTION
Equipment damage. Mount inverter to a strong, stable surface.
Never mount to drywall, plaster, or other non-structural wall
treatments. Failure to mount inverter to a strong, stable surface
could result in equipment or property damage.
A
B
009991
C
009992

Electrical Connections
Installation and Owner’s Manual for Generac PWRCell Inverter 15
Section 5: Electrical Connections
Accessing Wiring Compartment
See Figure 5-1 . To access the wiring compartment:
1. Open inverter front cover by lifting the bottom to
horizontal (B) and pushing inward (C).
2. Locate wiring compartment cover (D).
3. Remove five M4X10 screws (E) and wiring
compartment cover.
4. Verify all PWRcell DC and AC terminals are below
10V, using a multi-meter.
Figure 5-1. Wiring Compartment
PWRcell Inverter Wiring Compartment
Figure 5-2. PWRcell Inverter Wiring Compartment (XVT Series)
(000600)
DANGER
Electrocution. Initiate a system-wide shutdown and turn the
PWRcell DC Disconnect Switch OFF on all connected
batteries before performing service. Failure to do so will
result in death, serious injury, or equipment and property
damage.
(000642)
DANGER
Electrocution. Verify all system voltages are safe before
wiring. Disconnect all AC and DC sources of power before
touching terminals. Failure to ensure no dangerous
voltages are present on conductors and terminals before
wiring will result in death or serious injury.
C
010238
B
ED
A
APWRcell DC Disconnects ISTOP Terminals
BREbus Bi-directional DC Terminals JProtected Loads Disconnect
CInternet Connection KAC Grid Connection Terminals
DDC Main Fuses LProtected Loads Terminals
ECurrent Transformers (CTs) Accessory Ports MGrounding Bar
FAutomatic Transfer Switch (ATS) Accessory Port NRGM PWR / Gen Inhibit (XVT Only)
GREbus Beacon Port OFast Blow Mini Fuses 1 A 250 V (XVT Only)
HAuthorized Generac Personnel Only
BC
D
M
L
K
J
I
H
G
F
E
A
011235
N
O

Electrical Connections
16 Installation and Owner’s Manual for Generac PWRCell Inverter
Knockout Dimensions and Locations
NOTE: All knockouts are combination knockouts, except
for the 1/4 in trade knockout at the top of the left side
which is intended only for mounting an optional LTE
modem antenna.
See Figure 5-3 for knockout locations and Table 5-4 for
available knockout sizes and quantities.
When using knockouts:
•Install reducing washers to accommodate smaller
conduit sizes.
•Install rain-tight or wet locations hubs in
compliance with UL514B.
Figure 5-3. Knockout Locations
Table 5-4. Combination Knockout Size and Quantity
Combination Knockout Size Quantity
3/4 in X 1 in 6
1/2 in X 3/4 in 7
0.575 in use only for LTE Modem Antenna 1
42 mm
1-21/32 in
50 mm
1-31/32 in
137 mm
5-13/32 in
97 mm
3-13/16 in
140 mm
5-17/32 in 2-13/16 in
72 mm
56 mm
2-7/32 in
40 mm
1-19/32 in
552 mm
21-23/32 in
50 mm
1-31/32 in
45 mm
1-3/4 in
55 mm
2-5/32 in
55 mm
2-5/32 in
26 mm
1 in
58 mm
2-9/32 in
62 mm
2-7/16 in
50 mm
1-31/32 in
48 mm
1-7/8 in
55 mm
2-5/32 in
55 mm
2-5/32 in
35 mm
1-3/8 in
10 mm
13/32 in
28 mm
1-3/32 in
011234