Generac Power Systems PV Link Installation Manual Download Page 16

Installation Manual for PV Link and SnapRS

13

Section 5 Mounting and Connecting

Installation Guidelines

• Install  PV  Links  close  to  the  edge  of  the

array  for  best  cooling  and  easier  service

access.

• Calculate maximum substring length using

the 

Installation  Design  Worksheet

  work

-

sheet in Section 3 of this manual. 

• The modules within each substring must be

the same type, and all should be mounted

at the same pitch and orientation.

• When installing a system with multiple  PV

Links, it is not necessary to match the num

-

ber  of  modules,  roof  pitch,  or  orientation

across all substrings in an array.

• Ensure at least a 1 in (25.4 mm) clearance

between the heatsink fins and adjacent sur

-

faces to allow sufficient air flow for cooling.

• The PV Link can be installed in any orienta

-

tion. Cooling is most effective if fins are ori

-

ented  vertically  and  facing  away  from  the

PV panel.

• Mount  the  optimizer  at  least  3  ft  (0.9  m)

from the ground.

• Review  the  PV  module  instructions  to

determine  if  any  restrictions  for  mounting

devices  under  the  module  exist  as part  of

the PV module listing.

Attachment and Grounding

NOTE: 

Proper  grounding  is  necessary  for

REbus communication. 

Installing to Metallic or Grounded 

Structures

See 

Figure 5-1

If  mounting  PV  Link  under

-

neath  an  array  to  metallic  PV  racking,  install

the  PV  Link  with  label  (A)  facing  up. Attach

-

ment  flange  slots  (B)  accept  fasteners  up  to

M8 or 5/16” in diameter.

Installing to Nonmetallic or 

Ungrounded Structures

• Use two fasteners appropriate for the struc

-

ture. 

• See 

Figure 5-1

. Fasten to grounding termi

-

nal (C) the equipment grounding conductor

using a field supplied lug. 

• Use listed bonding hardware only. 

• Size  equipment  grounding  conductor  per

NEC  requirements  and  torque  per  manu

-

facturer specifications.

Figure 5-1. Grounding Terminal Location

Installing to a Grounded Rail

• See 

Figure  5-1

.  Use  two  rail-compatible

fasteners (D) to secure the PV Link to the

grounded rail. 

• Use  a  grounding  washer  (E)  between  the

rail and attachment flange to penetrate the

rail’s anodized coating. 

• Torque fasteners according to the clip man

-

ufacturer’s instructions.

Figure 5-2. Attaching to a Grounded Metal Rail

(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.

(000657)

Equipment damage. Never leave the PV Link MC4 
connectors open and exposed to the atmosphere overnight
or during rain. Doing so could cause equipment failure. 

CAUTION

WARNING:

 ELECTRIC SHOCK HAZARD - THE DC CONDUCTORS OF THIS PHOTOVOLTAIC SYSTEM ARE UNGROUNDED AND MAY BE ENERGIZED. ELECTRIC SHOCK HAZARD - DC OUTPUT CONDUCTORS MAY BE ENERGIZED REGARDLESS OF SUN EXPOSURE.

CAUTION: 

RISK OF ELECTRIC SHOCK - WHEN THE PHOTOVOLTAIC ARRAY IS EXPOSED TO LIGHT, IT SUPPLIES A DC VOLTAGE TO EQUIPMENT. COVER PV MODULE IN OPAQUE MATERIAL BEFORE CONNECTING OR DISCONNECTING THIS OPTIMIZER. DURING FAULT, ZERO CURRENT IS 

SOURCED INTO DC ARRAY BY THIS CONVERTER. INSTALL IN ACCORDANCE WITH ALL LOCAL ORDINANCES. HOT SURFACE - TO REDUCE THE RISK OF BURNS-DO NOT TOUCH. RAPID SHUTDOWN: DEVICE AUTOMATICALLY DISCONNECTS PV ARRAY -  LOSS OF GRID, MANUAL SHUTDOWN FROM 
CONTROLLER, OR ANY FAULT ON REBUS™ DC NANOGRID WILL AUTOMATICALLY DISCONNECT ARRAY FROM GRID. 

AVERTISSEMENT: 

 RISQUE DE CHOC ÉLECTRIQUE - LES CONDUCTEURS DC DE CE SYSTÈME PHOTOVOLTAÏQUE NE SONT PAS RELIÉS À LA TERRE ET POURRAIENT ÉTRE SOUS TENSION. RISQUE DE CHOC ÉLECTRIQUE - LES CONDUCTEURS À SORTIE DC POURRAIENT ÊTRE SOUS 

TENSION INDÉPENDAMMENT DE LEURS EXPOSITIONS AU SOLEIL.

ATTENTION: 

RISQUE DE CHOC ÉLECTRIQUE - LORSQUE LE GÉNÉRATEUR PHOTOVOLTAÏQUE EST EXPOSÉ À LA LUMIÈRE, IL FOURNIT UNE TENSION CONTINUE À L'APPAREIL. COUVREZ LE MODULE PHOTOVOLTAÏQUE D'UN MATÉRIAU OPAQUE AVANT DE BRANCHER OU DE 

DÉBRANCHER CET OPTIMISEUR. EN CAS DE DÉFAUT, IL N'EXISTE AUCUN COURANT ENTRE CE CONVERTISSEUR ET LE GÉNÉRATEUR CONTINU. INSTALLEZ EN CONCORDANCE AVEC TOUS LES RÈGLEMENTS LOCAUX. SURFACE CHAUDE - AFIN DE REDUIRE LE RISQUE DE BRÛLURES, NE TOUCHEZ 
PAS. SYSTÈME D'ARRÊT RAPIDE: L'APPAREIL SE DECONNECTE AUTOMATIQUEMENT DU GÉNÉRATEUR PHOTOVOLTAÏQUE - EN CAS DE PERTE DE RÉSEAU, D'ARRÊT MANUEL DE COMMANDE ÉLECTRIQUE, OU DE DEFAILLANCE DU SYSTEME "REBUS™ DC NANOGRID," LE GÉNÉRATEUR SE 

MAX CONT. OUTPUT POWER 

  

2500 

W

STANDBY POWER

 

  <1 

RATED POWER INPUT VOLTAGE

  

200-360 

VDC

MPPT  INPUT VOLTAGE   

 

60-360 VDC

MAX INPUT VOLTAGE

 

  420 

V

MAX OUTPUT VOLTAGE

 

  420 

V

OUTPUT

 

   REbus™ 

DC 

Nanogrid

MAX AMBIENT TEMP

 

  70° 

C

MAX OUTPUT OVERCURRENT PROTECTION

  

30 A

MAX INPUT CURRENT (OPERATING)

   

13 A @ 50ºC, 10 A @ 70ºC

MAX INPUT CURRENT (SHORT CIRCUIT)

 18 

A

MAX OUTPUT CURRENT (CONTINUOUS)

 8 

A

MAX OUTPUT CURRENT (FAULT)

  

10 

ENCLOSURE 

   

TYPE 3R

 

 

TOPOLOGY

 

   BOOST 

CONVERTER

PROTECTIONS

 

 

 

GFCI, Photovoltaic DC Arc-Fault  

    Circuit-Protection, 

Type 

1, 

PVRSS C

ontr

olled C

onduc

tor C

onnec

tion P

or

t

Ref
er t
o instruc

tions f

or c

onditions of use

REbus DC Nanog

rid

OUTPUT

PVRSS C

ontr

olled C

onduc

tor C

onnec

tion P

or

t

Ref

er t

o instruc

tions f

or c

onditions of use

e

PV Substring

 INPUT

Input:

Max 420V temperature corrected V

oc

.

SINGLE STRING INPUT. 
Dual string input requires approval.

Output:

Connect PV Links to inverter REbus 
terminals in parallel.

ENCLOSURE MUST BE GROUNDED 

for REbus communication

ENCLOSURE MUST BE GROUNDED 

for REbus communication

IMPORTANT INSTALLATION INSTRUCTIONS:

Made in the USA

Conforms to UL1741, UL1699B
Certified to CSA C22.2 #107.1

≤ 420Voc

≤ 420Voc

PV Link 

/ S2502

SnapRS™ compatible substring optimizer

PV rapid shutdown system equiptment

C

B

A

D

E

Summary of Contents for PV Link

Page 1: ...d in a critical life support application Failure to adhere to this warning could result in death or serious injury Register your Generac product at https pwrfleet generac com 1 888 GENERAC 888 436 372...

Page 2: ...ty 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 replacem...

Page 3: ...t 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 Gr...

Page 4: ...erating 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 af...

Page 5: ...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 Disco...

Page 6: ...s 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 00...

Page 7: ...4 Installation Manual for PV Link and SnapRS This page is intentionally left blank...

Page 8: ...te maximum Maximum input current operating A F C 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 D...

Page 9: ...rtant 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 Importan...

Page 10: ...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 in...

Page 11: ...8 Installation Manual for PV Link and SnapRS SnapRS Component Locations Figure 2 6 Component Locations A Positive PV Connector B Negative PV Connector A B 010050...

Page 12: ...ge limit 3 Divide the PV Link VMP Voltage at Maxi mum Power by the panel VMP and round down to determine the number of panels that can be connected in series to the PV Link without exceeding maximum p...

Page 13: ...10 Installation Manual for PV Link and SnapRS This page is intentionally left blank...

Page 14: ...eet 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 la...

Page 15: ...12 Installation Manual for PV Link and SnapRS This page is intentionally left blank...

Page 16: ...TRIC SHOCK HAZARD DC OUTPUT CONDUCTORS MAY BE ENERGIZED REGARDLESS OF SUN EXPOSURE CAUTION RISK OF ELECTRIC SHOCK WHENTHE PHOTOVOLTAIC ARRAY IS EXPOSEDTO LIGHT IT SUPPLIES A DCVOLTAGETO EQUIPMENT COVE...

Page 17: ...connections due to poor wiring practices 2014 NEC and Earlier Editions For NEC 2014 compliant systems connect the substring PV modules in series To install PV modules in series to PV Link 1 Connect t...

Page 18: ...to the negative whip of the PV Module D 2 Connect the negative end of each SnapRS device to the positive whip of the next PV module in the series 3 Connect the PV string positive lead to PV Link B at...

Page 19: ...ed in parallel each string must use the same number of the same type of PV modules and there must be one SnapRS device for each module in the array Figure 5 5 Parallel Input PV Array with SnapRS Devic...

Page 20: ...ee the Generac PWRcell Inverter Installation Manual for instructions on commissioning the REbus system PVRSS Commissioning with SnapRS Devices To enable PV Link to work as a PVRSS with SnapRS devices...

Page 21: ...high input The voltage detected with SnapRS devices disabled is higher than expected Verify the SnapRS devices are installed correctly Run the PVRSS self test SnapRS devices have not been installed or...

Page 22: ...fault is detected the status message reads Arc Fault To conduct an AFD test 1 On the PWRcell inverter control panel use the left or right arrows to scroll to the page for the desired PV Link 2 Press t...

Page 23: ...20 Installation Manual for PV Link and SnapRS This page is intentionally left blank...

Page 24: ...ice If the PV Link is not operating as expected or if a PV Link error message appears on the Generac PWRcell Inverter control panel LCD display contact the nearest Independent Authorized Service Deale...

Page 25: ...22 Installation Manual for PV Link and SnapRS This page is intentionally left blank...

Page 26: ...the general health of a SnapRS device DMM Red to SnapRS DMM Black to SnapRS Resistance reads 300 k to 350 k Diode check reads 0 50 V to 0 55 V DMM Red to SnapRS DMM Black to SnapRS Resistance reads 1...

Page 27: ...24 Installation Manual for PV Link and SnapRS This page is intentionally left blank...

Page 28: ...ights reserved Specifications are subject to change without notice No reproduction allowed in any form without prior written consent from Generac Power Systems Inc Generac Power Systems Inc S45 W29290...

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