Installation Manual Generac PV Link™ and SnapRS™ 010023 006087 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. (000209b) 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.
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.
Table of Contents Section 1 Introduction and Safety 1 Introduction ..................................... 1 Safety Rules .................................... 1 General Hazards ............................. 2 PVRSE Warning .............................. 2 Electrical Hazards ........................... 3 Section 5 Mounting and Connecting ...................................13 Installation Guidelines ...................13 Attachment and Grounding ............13 Connecting to Inverter ...................
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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.
General Hazards 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. (000191) WARNING 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 Loss of life. This product is not intended to be used in a critical life support application.
Electrical Hazards DANGER Electrocution. Water contact with a power source, if not avoided, will result in death or serious injury. (000104) 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. (000145) DANGER Electrocution. Turn battery disconnect OFF and de-energize REbus before touching terminals.
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Section 2 General Information PV Link Specifications Description Units S2502 Rated power W 2,500 (continuous) Peak efficiency MPPT input voltage % 99 VDC 60 – 360 Rated power input voltage VDC 200 – 360 Maximum input voltage VDC 420 (absolute maximum) A ºF (ºC) 13 @ 122 (50) Maximum input current (operating) Maximum input current (short circuit) A 18 Maximum output current (fault) A 10 Maximum output voltage Nominal output VDC 420 (open circuit) - REbus DC nanogrid (380 VDC + da
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. SnapRS Dimensions A B C A 010051 Figure 2-3. Unit Dimensions A 7/8 in (22 mm) B C 7 in (178 mm) 1 in (25 mm) About PV Link 010021 Figure 2-1.
PWRcell Inverter control panel. The PV Link meets the ground fault protection requirements in NEC Article 690.41(B). Component Locations PV Link Component Locations AFCI Information A The PV Link is a Photovoltaic DC Arc Fault Circuit Protection Type 1 device that incorporates an internal arc fault circuit interrupter (AFCI) and meets the arc fault circuit protection requirement in NEC Article 690.11.
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Section 3 Installation Design Installation Design Worksheet Use this worksheet to determine the maximum number of PV modules of a given type that can be connected to a PV Link. PV Link Max Voc 420 V NOTE: Fewer PV modules can be used as long as the minimum MPPT input voltage is met. NOTE: The temperature correction factor listed on the module nameplate can be used if available. X NEC Cold Factor PV Link Max Vmp 360 V Adjusted Voc = Adjusted Voc = Voc Limit Result 3.
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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 manual. 3.
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Section 5 Mounting and Connecting D (000670) • 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 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 for optimal performance.
3. See Figure 5-3. Fasten the equipment grounding conductor to grounding terminal (C) using a field supplied lug. NOTE: For PV Link model S2502, attachment flange slots (B) may be widened using tooling, such as a drill and bit, where the rail-less racking mount bolt needs to fit for mounting. 012922 Figure 5-3. Installing to rail-less Racking 4. Use listed bonding hardware only. 5. Size equipment grounding conductor per NEC requirements and torque per manufacturer specifications.
5. Make a substring map using the serial number stickers and record in Table 1 : PV Link and SnapRS Important Information the following information: – Each PV Link serial number – Each PV Link RCP number – Number of substrings in parallel. 2017 and 2020 NEC Compliant Systems For NEC 2017 and 2020 compliant systems, connect the substring PV modules in series using one SnapRS device in between each module.
A B E C G F D G H 011990 Figure 5-5. Single PV Substring with SnapRS Devices A PWRcell Inverter E PV Substring Input - B Rebus Homerun F PV Substring Input + C Rebus Output - G SnapRS Device D REbus Output + H PV Panel NOTE: See Figure 5-6. When two smaller series substrings are connected in parallel for high voltage PV modules, each series substring must use the same number and type of PV modules, and there must be one SnapRS device for each module in the array.
Section 6 Operating Instructions User Interface via Inverter PV Link Information and control features are available on the PWRcell Inverter control panel when REbus is energized. See the Generac PWRcell Inverter Owner’s Manual for more information. See Figure 6-1. To access the device page for each PV Link, use left or right arrow buttons (A) on the inverter control panel to scroll through the pages.
7. Complete steps 1 – 6 for each PV link in the system. PLM Channel: Vin Startup: String Count: Enable PVRSS: Cancel 1 135.0V 2 on SnapRSInstalld: SnapRSDetected: Override PVRSS: 7 7 off Commit 012924 Figure 6-4. PVRSS Commissioning (2 of 3) 6. See Figure 6-5. The LCD will display Testing PRVSS during the testing process. Upon completion, the LCD will read Low Sun or Making Power, depending upon available PV voltage.
Disabling PV Link NOTE: Disabling a PV Link does NOT power down the PV array if SnapRS devices are not installed. If SnapRS devices are installed, array voltages are limited to less than 80 VDC once PV Link is disabled or its DC disconnect is opened. NOTE: Disabling PV Link does not power down Rebus if other devices are providing power to the DC bus. NOTE: The disabled/enabled state of each PV Link persists through AC power outages and DC bus power cycling. To disable a PV Link: 1.
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Section 7 Maintenance Service CAUTION 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. (000655a) Maintenance See Figure 7-1. To ensure maximum performance, keep heatsink fins (A) free of leaves and other debris.
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Section 8 Troubleshooting CAUTION Equipment damage. Connect the PV Link output to a REbus-compatible device (± 190 VDC nominal regulated DC bus) only. Connecting to conventional PV inverters or any other device could cause equipment damage. (000659) Table 8-1. PV Link Troubleshooting Problem Low Sun w/out SnapRS Cause Solution PV Link does not have adequate input voltage. PV Links will show 'low sun' every night when the sun goes down or if solar panels are covered.
SnapRS Health Check There are no functional tests that can be performed on SnapRS devices in the field. However, some simple digital multimeter (DMM) checks can confirm the general health of a SnapRS device. DMM Red to SnapRS +, DMM Black to SnapRS – Resistance reads ~ 300 kΩ to 350 kΩ Diode check reads ~ 0.45 V to 0.
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Part No. DMAN00013 Rev. C 07/1/2021 ©2021 Generac Power Systems, Inc. All rights 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 Hwy. 59 Waukesha, WI 53189 1-888-GENERAC (1-888-436-3722) www.generac.
