Generac Power Systems PV Link Manuale utente

Installation Manual

Generac PV Link™ and SnapRS™

SAVE THIS MANUAL FOR FUTURE REFERENCE

006087

010023

(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.

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

Use this page to record important information about your Generac Product

Record PV Link™ and SnapRS™ information

for your PWRcell system on this page.

When contacting a Generac Products

Authorized Service Dealer (ASD) about parts

and service, always supply complete model

number and serial number information.

Operation and Maintenance: Proper

maintenance and care of the energy storage

system ensures a minimum number of

problems and keeps operating expenses at a

minimum. It is the operator’s responsibility to

perform all safety checks, to verify that all

maintenance for safe operation is performed

promptly, and to have the equipment checked

periodically by an ASD. Normal maintenance,

service and replacement of parts are the

responsibility of the owner/operator and, as

such, are not considered defects in materials

or workmanship within the terms of the

warranty. Individual operating habits and

usage may contribute to the need for

additional maintenance or service.

Table 1 - PV Link and SnapRS Important Information

PV Link

Number Location Serial Number RCP Number Parallel

Input?

Number of

SnapRS

SnapRS Date of

Manufacture

(000393a)

WARNING

CANCER AND REPRODUCTIVE HARM

www.P65Warnings.ca.gov.

Table of Contents

Section 1 Introduction and Safety 1

Introduction ..................................... 1

Safety Rules .................................... 1

General Hazards ............................. 2

PVRSE Warning .............................. 2

Electrical Hazards ........................... 3

Section 2 General Information ..... 5

PV Link Specifications ..................... 5

SnapRS Specifications .................... 5

Unit Dimensions .............................. 6

About PV Link ................................. 7

About Generac SnapRS .................. 7

GFCI Information ............................. 7

AFCI Information ............................. 7

PVRSS Information ......................... 7

Component Locations ..................... 7

Section 3 Installation Design ....... 9

Installation Design Worksheet ......... 9

Section 4 PVRSS Compliance

Guidelines .................................... 11

Section 5 Mounting and

Connecting .................................. 13

Installation Guidelines ................... 13

Attachment and Grounding ........... 13

Connecting to Inverter ................... 14

Connecting PV Modules ................ 14

Section 6 Operating

Instructions .................................. 17

User Interface via Inverter ............. 17

Commissioning the Rebus

System .......................................... 17

PVRSS Commissioning with

SnapRS Devices ........................... 17

Disabling PV Link .......................... 19

AFD Self-Test ................................19

PVRSS Self-Test ...........................19

Section 7 Maintenance ................21

Maintenance ..................................21

Service ...........................................21

Section 8 Troubleshooting .........23

Installation Manual for PV Link and SnapRS 1

Section 1 Introduction and Safety

Introduction

Thank you for purchasing a Generac PWRcell

product.

This manual provides instructions for installing

PV Link and SnapsRS devices. Consult the

installation and operation manuals for other

Generac PWRcell system components, as

applicable.

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.

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-GEN-

ERAC), 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 ref-

erence. This manual contains important

instructions that must be followed 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 emer-

gency.

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 inclu-

sive. 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, WARN-

ING, 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 haz-

ards 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 Indepen-

dent Authorized Service Dealer (IASD) or

Generac Customer Service at 1-888-GEN-

ERAC (1-888-436-3722), or visit

www.generac.com.

When contacting 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 provided 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.

2 Installation Manual for PV Link and SnapRS

General Hazards

• Connecting Generac PWRcell to the elec-

tric utility grid must only be done after

receiving prior approval from the utility

company.

• Only competent, qualified personnel should

install, operate, and service this equipment.

Strictly comply to local, state, and national

electrical and building codes. When using

this equipment, comply with regulations

established by the National Electrical Code

(NEC), CSA Standard; 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.

• If working on this equipment while standing

on metal or concrete, place insulative mats

over a dry wood platform. Work on this

equipment only while standing on such

insulative mats.

• Never work on this equipment while physi-

cally or mentally fatigued.

• Any voltage measurements should be per-

formed with a meter that meets UL3111

safety standards, and meets or exceeds

overvoltage class CAT III.

PVRSE Warning

NOTE: SnapRS devices must be used in con-

junction with Generac S2502 PV link to form a

complete PVRSS per NEC 690.12

This Photovoltaic Rapid Shutdown Equipment

(PVRSE) does not perform all of the functions

of a complete Photovoltaic Rapid Shutdown

System (PVRSS). This PVRSE must be

installed with other equipment to form a com-

plete PVRSS that meets the requirements of

NEC (NFPA 70) section 690.12 for controlled

conductors outside the array. Other equipment

installed in or on this PV system may

adversely affect the operation of the PVRSS.

It is the responsibility of the installer to ensure

the completed PV system meets the rapid

shutdown functional requirements. This equip-

ment must be installed according to the manu-

facturer’s installation instructions.

(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.

WARNING

Risk of injury. Do not operate or service this machine

if not fully alert. Fatigue can impair the ability to

service this equipment and could result in death or

serious injury. (000215)

(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.

(000670)

WARNING

Hot Surfaces. Locate and install the PV Link so as to avoid

inadvertant contact. When operating in hot weather the

optimizer will become hot and could result in personal

injury.

(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.

(000655)

WARNING

Equipment damage. Never open the PV Link. The

optimizer is factory-sealed and contains no field-

serviceable parts. Opening the optimizer could result in

equipment damage.

(000669)

WARNING

Equipment damage. Never operate PV Link in ambient

temperatures greater than 158° F (70° C). Operating

PV Link in high temperature conditions will result in

equipment 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

Installation Manual for PV Link and SnapRS 3

Electrical Hazards

(000104)

DANGER

Electrocution. Water contact with a power

source, if not avoided, will result in death

or serious injury.

(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.

(000188)

DANGER

Electrocution. Do not wear jewelry while

working on this equipment. Doing so will

result in death or serious injury.

(000666)

WARNING

Electric Shock. Avoid contact with DC conductors. DC

conductors of this photovoltaic system are ungrounded and

may be energized regardless of sun exposure. Contact with

conductors could 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.

4 Installation Manual for PV Link and SnapRS

This page is intentionally left blank

Installation Manual for PV Link and SnapRS 5

Section 2 General Information

PV Link Specifications

Specifications are subject to change without notice. Refer to the product specification sheet for complete list.

SnapRS Specifications

* 1 SnapRS per PV module.

** Used with a 50 V PV Panel.

Specifications are subject to change without notice. Refer to the product specification sheet for complete list.

Description Units S2502

Rated power W 2500 (continuous)

Peak efficiency % 99

MPPT input voltage VDC 60–360

Rated power input voltage VDC 200–360

Maximum input voltage VDC 420 (absolute maximum)

Maximum input current (operating) A

ºF (ºC)

13 @ 122 (50)

Maximum input current (short circuit) A 18

Maximum output current (fault) A 10

Maximum output voltage VDC 420 (open circuit)

Nominal output - REbus DC nanogrid (380 VDC + data)

Maximum output current (continuous) A 8

Standby power W <1

Topology - Boost converter

Protections - Ground-fault protection, arc-fault protection

(type 1), PVRSE

Operating temperature range ºF (ºC) -40 (-40) to 158 (70)

Enclosure - NEMA Type 3R

Weight lb (kg) 7.3 (3.3)

Certifications - UL 1741

Description Units RS801

PV module maximum VOC V 75

Maximum number of PV modules per

string

- 9*

Efficiency % 99.8**

Maximum input current A 13

Shutdown time Sec < 10

Enclosure rating - NEMA Type 6P

Operating temperature range ºF (ºC) -40 (-40) to 158 (70)

Certifications - UL 1741

Weight oz (g) 3.5 (100)

6 Installation Manual for PV Link and SnapRS

Important Product Information

PV Link Serial Number Location

See Figure 2-1. Serial number tag (A) includes a

removable layer that can be peeled off leaving the

underlying label in place. Adhere the removable

layer to the inside cover of this manual and record

the information from this tag in Table 1: PV Link

and SnapRS Important Information.

Figure 2-1. Serial Number Location

SnapRS Date of Manufacture

Refer to Figure 2-2 to locate the unit date of

manufacture. Record this information in

Table 1: PV Link and SnapRS Important Infor-

mation on the inside front cover of this man-

ual.

Figure 2-2. Date of Manufacture

Unit Dimensions

PV Link Dimensions

Figure 2-3. Unit Dimensions

*18-1/8 in (460 mm) with PV wire bend

radius

SnapRS Dimensions

Figure 2-4. Unit Dimensions

010021

A9-9/16 in (243 mm)

B* 15-1/2 in (390 mm)

C2-1/16 in (53 mm)

A7/8 in (22 mm)

B7 in (152 mm)

C1 in (25 mm)

010024

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

AAttachment Flange Slots

BGrounding Terminals (sized for 1/4 in hard-

ware)

CREBus DC Nanogrid Output Negative (-)

Lead

DREBus DC Nanogrid Output Positive (+)

Lead

EPV Substring Input Negative (-) Lead

FPV Substring Input Positive (+) Lead

GMC4 Connectors

010023

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