• Evolution Solar : We don’t want to melt the polar, so we should all use solar!
  • Evolution Solar : Solar Energy – Today’s resource for a brighter tomorrow!
  • Evolution Solar : Be bright. turn to solar power
  • Evolution Solar : Solar Power: The best things in life are free
  • Evolution Solar : Our Sun, the bright alternative to use solar power.

L A R G E - S C A L E GMS

Cutting-edge structural engineering and product design means lower cost in utility-scale and other 500+ kW projects, and that is exactly what SunLink’s® Large-Scale GMS delivers. The system offers maximum racking flexibility, efficient design and ease of assembly which translate into significant savings.


Installation Efficiency - SunLink’s Large-Scale GMS was specially designed to make the mounting of prepanelized 3- or 4-module panel columns as fast as possible whether using mechanical equipment or manual lifting. Prepanelization lowers field labor by 30% by increasing the rate of mechanical assembly. It also helps protect against weather delays and other unforeseen events.

In addition, with only 6 components and no on-site drilling, cutting or welding, Large-Scale GMS installation is quick and easy. Both wire management and grounding are integrated into the racking, simplifying total balance of system complexity and significantly lowering both labor and material costs.

System Flexibility - Large-Scale GMS can be adapted to any site and optimized for a project’s unique wind, snow and geotech conditions. Plus, no other product offers as much in-field racking adjustability.

Turn-Key - Together with our installation partners, SunLink offers the complete range of installation services including geotechnical surveys, post installation, mechanical installation, prepanelization and module installation.
Only 6 Components
T E C H N I C A L S P E C I F I C AT I O N S
Tilt Angles 15°, 20°, 25°, 30°, 35°
Grade of Terrain Up to 14% grade
Materials Galvanized steel components;
Stainless steel and Galvanized steel fasteners
Grounding Fully integrated grounding. ETL listed to UL 2703.
Module Compatibility All major brands
Installation Rates A four-person crew working a 7.5 hour day can install more than
300 modules/day.
Testing Large-Scale GMS’ design is based on extensive testing and validation
including boundary layer wind tunnel and mechanical tests.
Warranty 20 years
Manufacturing Can be ARRA compliant.

Assembly Instructions for Large-Scale GMS



Notices and Safety Precautions
Read this document before beginning installation work. Plan for safe practice during any installation activity with respect to hazards from tripping, falling, lifting, repetitive stress, and any overhead or electrical hazards.

This document is not prescriptive regarding safety and does not purport to address all the safety concerns that may arise with its use. Contractors should become familiar with all applicable safety, health and regulatory requirements before beginning work.

Electrical safety notice – Any time a SunLink panel contains two or more electrically interconnected modules, a shock hazard is present. SunLink is a mechanical system and contains no "live" parts. Mechanical installers and electricians should coordinate in order to ensure that all personnel are aware of electrical hazards.

Precedence – The Large‐Scale GMS positions and secures photovoltaic modules. DC “stringing” and interconnection of the modules requires placement of conduit, conduit fittings and combiner boxes.

Field modifications – UUnauthorized field modification of SunLink components or assemblies may affect SunLink Warranty coverage. Provide marked up drawings for SunLink’s review, comment and approval prior to attempting any field modifications.

Fasteners – All required fasteners are furnished with the Large‐Scale GMS. For any assembly, finish initial bolted assembly to finger tight. Refer to the individual steps for detailed information on application. Use of air‐powered tools that do not incorporate means to limit applied torque may damage the head of these fasteners and is not recommended

Final inspection: – VVisually inspect assembled SunLink arrays, roof‐mounted or ground supported. The suggested process consists of a row‐by‐row walk‐through and then a perimeter walk‐around, after mechanical assembly, before electrical completion. Report any distortion in the assembly to SunLink. Array substrate supports should be in full contact with the roof or the ground. Any indication of uneven distribution of weight should be evaluated and corrected before continuing with electrical finishing.

GENERAL PROCEDURE NOTES

A. The SunLink Large‐Scale Ground Mount System (L‐GMS) assembles PV modules into panels, before installing on racking, as follows:
a:4x1 – 4 modules assembled into one panel
b:3x1 – 3 modules assembled into one panel

B. The SunLink L‐GMS is optimized to site‐specific conditions. As a result, major components of the SunLink L‐GMS may be provided in section sizes and lengths that vary from those shown in this guide. The installation process detailed herein remains the same regardless of component size.
C. At the end of every work day ensure all components are securely attached.
D. Be careful of pinch hazards, especially when lowering panels onto purlins.


INSTALLATION TOOLS
Minimum six (6) saw horses (e.g. Stanley
11012 ‐ 32” high, 4” long, 29” wide)
Panel assembly jig
(available from SunLink)
Torque wrench
Cordless screwdriver with torque adjustment 9/16" socket 3/4" allen drive
3/4” wrench 1/2" socket with drill attachment Ratchet
Optional panel lifting jig (available from SunLink)

Component Quick Reference

COMPONENTS
POST
POST CLAMP PLATE
POST FRAME
PURLIN
RAIL CLAMP
MODULE RAIL
(U OR Z SECTION)
MODULE CLAMP, CENTER

MODULE CLAMP, END

KICKER CLIP

POST FRAME KICKER

PANEL ASSEMBLY JIG
(TOP CLAMP)
PANEL ASSEMBLY JIG
(DIRECT ATTACHMENT)
TORSION BRACE
(NOT REQUIRED FOR ALL PROJECTS)

PURLIN TIE
(NOT REQUIRED FOR ALL PROJECTS)



Part I – Sub-Structure Installation


Step 1 ‐ Install posts to horizontal datum.
  • A. See SunLink layout drawing for spacing and tolerances

  • B. Ensure posts are installed with the four‐hole pattern at the top.

Step 2 – Install Post Clamp Plate to top of Post Frame using

predrilled holes on post.
  • A. Attach Post Clamp Plate to on the west side of the Post using (4) HDG ½‐13 x 1.5” HHCS

  • B. Align top of Post Clamp Plate with horizontal datum. Note: Per installer preference, alignment may be done after post frame is installed.

  • C.Fasteners: four (4) HDG ½‐13 x 1.5” HHCS, four (4) HDG ½‐13 hex nuts and eight (8) HDG ½” flat washers per Post.

  • D. Torque: 60 ±2 ft lbs


Step 3 – Attach Post Frame to Post Clamp Plate.
  • A. Attach Post Frame to Post Clamp Plate using four (4) HDG ½‐13 x 1.5” HHCS.

  • B. AtLeave nuts hand tight.

  • . Fasteners: four (4) HDG ½‐13 x 1.5” HHCS, four (4) HDG ½‐13 hex nuts and eight (8) HDG ½” flat washers per Post Frame

  • .Torque: 60 ±2 ft lbs – do not torque until after purlins are aligned, step 5

Step 4 – Position Purlins on Post Frame
  • A. Position Purlins on Post Frame saddles.

  • B.Space Purlins equally east‐west.

  • C.First and last Purlins on each row (or where a row break occurs) cantilever over the Post Frame.

  • D.For cantilevered Purlins, use center holes on Post Frame with inner slots on Purlin.

Step 5 – Secure Purlins to Post Frames
  • A.Slightly lift Purlins off saddles to align slots with holes on Post Frame (slots on end of Purlins align with outer holes on Post Frame saddles) and secure using two HDG 1/2‐13 x 1.5” HHCS fasteners on each end.

  • B. Position head of fastener on inside of Purlins as shown with nut on Post Frame‐side of connection.

  • C.Align Purlins.
    • a.Purlins can be aligned along a row using a laser level, string line or visually.

    • b.Align the top edge of the Purlins first and tighten to required torque, then move the Post Frame back and forth to align the Purlins north/south.

    • Note: The straighter the alignment, the more aesthetically pleasing the array will look after module installation.

  • D.Once Purlins are aligned, tighten Post Frame to Post Clamp Plate fasteners to required torque. (Refer to step 3.) Note: If Purlin Ties are required, see Step 6 before tightening all fasteners.

  • .Fasteners: Four (4) HDG 1/2‐13 x 1.5” HHCS, four (4) HDG 1/2‐13 hex nuts and eight (8) HDG 1/2" flat washers per purlin.

  • .Torque: 60 ±2 ft lbs



Step 6 – Install Purlin Ties (if required). See layout for purlin tie requirements.
  • A. Fasten purlin ties to north end of post frames, sharing the lower ½‐13 x 1.5” HHCS purlin fastener as shown.

  • B. Fasten the other end of the tie to the corresponding south purlin using one (1) ½‐13 x 3” HHCS, one (1) ½” flat washer, two (2) ½‐13 hex nuts and one (1) Purlin Tie Washer. The Purlin Tie Washer must be installed on the south side of the purlin web.

  • C.Torque the shared fastener (Detail A) as specified in Step 5.

  • D. The south purlin fastener (Detail B) is secured using the double‐nut method. Hand‐tighten the first ½‐13 hex nut until the connection is snug. Then add a second ½‐13 hex nut. Holding the first nut with a wrench, tighten the second nut against the first nut until reaching the required torque.

    Note: A gap may exist between the lower purlin and the purlin tie.

  • .Fasteners: one (1) HDG ½‐13 x 3” HHCS, two (2) HDG ½‐13 hex nut, one (1) ½” flat washer, and one (1) Purlin Tie Washer

  • .Torque: 30 ±2 ft lbs



Step 7 – Install Post Frame Kicker between Post Frame and
Post.
  • A. Install Kicker Clip clamps on to flanges of post by fastening to the round end of the Kicker with one (1) HDG ½‐13 x 3.5” HHCS. Ensure clips are fully seated on flanges of post.

  • B. Fasten flat end of the Kicker to the Post Frame with one (1) HDG ½‐13 x 1.75” HHCS. Note: Post flanges may deform slightly as Kicker Clip is tightened.

  • . Fasteners: one (1) HDG ½‐13 x 1.75” HHCS, one (1) HDG ½‐13 x 3.5” HHCS, two (2) HDG ½‐13 hex nuts and four (4) HDG ½” flat washers per kicker

  • . Torque: 60 ±2 ft lbs


GO TO Next Installation

Back to Top

Copyright © 2013, EVOLUTION GROUP All rights reserved                                            Designing & Developedby : Inspavo Consultancy Services