J ( Task ' Task Name
I
Duration Start rFinsh ( Predecessors Successors
IFeb
55 Mode
R Site Prep/ Analysis
i
45 days Mon 8/ 26/ 24 Mon 20/ 28/ 24 64
56 4 Due Diligence Analysis 15 days Mon 8/ 26/ 24 Mon 9/ 16/ 24 34SS 57SS 57 _.
I
4 Geotech Report 15 days Mon 8/ 26/ 24 Mon 9/ 16/ 24 56SS 58, 4 58 { 4 Environmental Studies 15 days Tue 9/ 17/ 24 Mon 10/ 7/ 24 57 59, 5 59 4 SWPP Reports/ Anyalsis 15 days Tue 10/ 8/ 24 Mon 10/ 28/ 24 58 6 f 60 j 4 ProcuremenD& PemihngNoticeto Proceed Lday Tue 10/ 1 / 24 ue 10 1S/ 24 40 72, 74, 75, 76 67 4 Permits & Interconnection 135 days Tue 10/ 29/ 24 Mon 5/ 5/ 25 13 62 4 Utility Interconnection Application and Initial Review 100 days Tue 12/ 17/ 24 Mon 5/ 5/ 25 45 12 63 4 AHl Permitting and Approvals 95 days Tue 10/ 29/ 24 Mon 3/ 10/ 25 78FS* 11S do Site Permit 60 days Tue 10/ 29/ 24 Mon 1/ 20/ 25 55
65, 4 Building Permit 60 days Tue 12/ 10/ 24 Mon 3/ 3/ 25 46 4 Electrical Permit 60 days Tue 12/ 17/ 24 Mon 3/ 10/ 25 37 65 -1
67 4 Procurement Major Equipment Ordered ( After Approved Submittal) 271 days Tue 9/ 17/ 24 Fri 10/ 3/ 25 15, 14SS f 68' 12 4 Solar Modules Provided by Onyx 50 days Wed 6/ 25/ 25 Thu 9/ 4/ 25 78SS- 40 days 88 Inverters 40 days Wed 6/ 18125 Wed 8/ 13/ 25 78SS- 45 days 92 70 ] 4 Racking 45 days Wed 6/ 25/ 25 Wed 8/ 27/ 25 78SS- 40 days 87, 86 f1 71 4 AC COMBINER 100 days Fri 12/ 6/ 24 Thu 4/ 24125 44 98 72 { 4 PV SWITCHGEAR 150 days Wed 1O/ 16/ 24 Tue 5/ 13/ 25 60 99 J 73 i
4 SOCOMECSUNSYS HES provided by Onyx 200 days Tue 9117/ 24 Tue 6/ 24/ 25 38 103 74 i
4 PV TRANSFORMER 150 days Wed 10/ 16/ 24 Tue 5/ 13/ 25 60 100 75 1 4 PV & BESS SWITCHGEAR 250 days Wed 10/ 16/ 24 Fri 10/ 3/ 25 60 102 76 4 PV UTILITY DISCONNECT 250 days Wed 10/ 16/ 24 Fri 10/ 3/ 25 60 101 77 4 Data MONITORING System " DAS" 40 days Tue 12/ 17/ 24 Mon 2/ 10/ 25 45 78 4 Construttton Notice to Protoed i day Thu 8/ 21/ 25 Thu 8/ 21/ 2S 63FSr115:days S1,fi8S5-40 79 4 Construction 216 days Fri 8/ 22/ 25 Mon 2/ 2/ 26 110, 1855 1 110 4 PV Mechanical Completion 1 day Tue 2/ 3/ 26 Tue 2/ 3/ 26 79 22, 112, 113 111j P AHl & Utility Inspections 20 days Wed 2/ 4/ 26 Tue 3/ 3/ 26 1121 4 Building Inspection 50 days Wed 2/ 4/ 26 Tue 4/ 14/ 26 110 113-1
4 Electrical inspection 50 days Wed 2/ 4/ 26 Tue 4/ 14/ 26 110 I
114
115 B 4
Submiss. not leteetdCatC
Utility Inspection
116 4 tgh " Ft. role t Deadly. e
117 4
118J 4 Testing& Commissioning
lt9 J 4 DC Commissioning
120 4 AC Gear Commissioning
121 4 DAS Commissioning
112 8 4
1231 4 Post - Construction ( Close Out)
124 'Q 4 Project Walkthrough/ Punchlist
125t 4 Prepare As Built Plans
126 4 Deliver O& M Manuals
127 J 4 Owner/ Operator Training
128 4 Punch List Signoff
129 I 4 Deliver Final Submittals
130 4 Final Completion
Project: Project Schedule
Date: Tue 7/ 30/ 24
split
Y—'—
Milestone
41 days Tue 3/ 3/ 26 Tue 4/ 28/ 26
10 days Thu4/ 30/ 26 Wed5/ 13/ 26 117 224, 25
10 days Thu 4/ 30/ 26 Wed 5/ 13/ 26 117
30 days Thu 4/ 30/ 26 Wed 5/ 13/ 26 117
10 days Thu 4/ 30/ 26 Wed 5/ 13126 117
37 days Thu 5/ 14/ 26 Mon 7/ 6/ 26
2 days Thu 5/ 14/ 26 Fri 5/ 15/ 26 118
15 days Tue 6/ 16/ 26 Mon 7/ 6/ 26 122
15 days Tue 6/ 16/ 26 Mon 7/ 6/ 26 122
15 days Tue 6/ 16/ 26 Mon 7/ 6/ 26 122
15 days Tue 6116/ 26 Mon 7/ 6/ 26 122
15 days Tue 6/ 16/ 26 Mon 7/ 6/ 26 122 130
1 day Tue 7/ 7/ 26 Tue 7/ 7/ 26 129 28
Summary r --------- I Inanne Mileslone Duration -only stanonly Projectsummary, r'--------- 1 Inacive Summary r - -- 1 Manual Summaryaollup Finish only Inactive Task—`_ —_ _ _ - Manual Task _ t Manual Summary _ r Fatemal Tasks
I Feb IR' 24 Feb25.' 24 Mills,( 24 Mar 10, 24 _ Mr17.' 24 ( Mar 24, 74 C hten, al Milestone o Manual Progress
7 Deadline L
I= Progress
ATTACHMENT E — OPERATIONAL OBJECTIVES
TO GENERAL CONDITIONS AND TECHNICAL SPECIFICATIONS
Solar Facilitv Sizin
If Solar Facilities arepart of the project scope, it is the responsibility of the Installer to ensurethat the sizing of the total installed system capacity at each Site (kWDC / kWAC) achievesthe Annual Energy Production Target as defined in the Site AssessmentTable as closely aspractical for each Site and the Operational Objectives. The total installed system capacity per Site shall not increase or decreasethe Annual Production Estimate without prior written approval of Site Host.
Battery System Sizing
If a Battery System is part of the project scope, it is the responsibility of the Installer to ensurethat the sizing of the total installed system capacity ( kW and kWh) per Site meets and the Operational Objectives.
Battery Systems Operation
1. Battery Systemsshall charge one hundred percent (100%) from the Solar Facility.
2. Battery Systemsshall prioritize operations in the following order:
a. Demand Reduction
b. Maximize savings from energy arbitrage
c. Maximize revenue from Grid Services Programs
NEM2 Interconnection Agreement
Installer is responsible to complete the Project within the requirements of the NEM2 interconnection applications and agreementswith the Distribution Utility including addressing any and all notices of deficiencies and applying for new or revising the NEM2 interconnection agreement for addition of Battery Systems.
W
ATTACHMENT F - MAJOR EQUIPMENT
TO GENERAL CONDITIONS AND TECHNICAL SPECIFICATIONS
40 AlsoEnergy
DAS System
Overview
Hardware
AlsoEnergywants to make it as easy as possible for you to plan and install your monitoring system hardware. That's why we provide your core hardware devicesconveniently mounted and pre -wired in a weatherproof enclosure.
The operating system for the
grid of the future
DAS Assembly
Complete with all necessary DAS
system hardware
Preconfigured for plug -and -play
capability with the PowerTrack
Platform
Hardware mounted and pre-viired
NEMA 4 rated enclosures for exterior
mounting
Indoor mounting hardware included
Built to your specifications
ETL listed
End -to -end DASsystems from AlsoEnergy
are tested, configured, assembled, and wired
in our ETL listed facility in Boulder, CO.
To find out more or schedule a
AlsoEnergy, Inc / 5400 Airport Bvd. Ste. 100 Boulder, CO 80301 USA / 866. 303. 5668 demo, contact us at alsoenergy. com AlsaEnergy
Hardware Components
Data
Pre -configured for use with PowerTrack
Accepts data from RS-485, RS-232, or
Ethernet connected devices.
Includesinternalstoragecapacity anda
touch screenLCDdisplay.
EnergyMeter
Getrevenuegradeaccuracy,
as requiredby manyclients.
Acceptssinglephase, splitphase, and
threephaseloads.
IncludesLCDdisplay.
Weather Stations and Environmental Sensors
The operating system for the
grid of the future
Ourhighqualityweatherstationscanaccommodateanysolarorwindmetricrequirements. t Weatherstations can fit into the main monitoringcommunicationsenclosureor havetheir own dedicated enclosure.
Anemometers Module Temperatures Sensors
Pyranometers ( Hukseflux, Apogee, Basicandfull weatherstation packages KippandZonen) High temperature weather stations
a
Ambient temperature sensors Remoteandportablestations
Cellular Modem
4G network
Low power consumption
Remote management and configuration
Workswith most major North Americancellularproviders
Wireless Communications
1 j
T
Ethernet radio
Suitableforoutdoormounting
Intra site communication
Y, Integrated antenna
Remote oversight
To find out more or schedule a
AlsoEnergy, Inc / 5400 Airport Bvd. Ste. 100 Boulder, CO 80301 USA / 866.303. 5668 demo, contact us at alsoenergy. com OCPS
800 Vac 3: 1 AC Combiner Solution for CPS Inverters
The CPS 800 Vac 3:1 AC Combiner Box is designed for CPS 250/275 kW three- phase string inverters to optimize system design, installation, and wire management. The units combine the output of ( 3) CPS 250/ 275 kW inverters allowing a cost-effective solution for simplifying system designs and minimizing AC wire losses. This solution enables savings on labor and material costs by reducing the amount of wires needed to connect CPSstring inverters to the grid.
Solutions Supplier
CPS can supply inverter and BOS equipment for 1500 V applications, which enables advantages for project logistics, shipment, and warranty management.
Decreased Wiring Costs
Combining CPSinverters with an AC Combiner Box reduces the amount of wires needed to connect the PVsystem to the grid.
Optimized Design
The AC Combiner Box is designed specifically for use with CPS250/ 275 kW inverters.
SA-'
s
I
III
iii
II
I •
a
a
II
Internal View of AC Combiner Box
n, tasheet
o CHINT POWER SYSTEMS AMERICA 2023/ OS-MKT NA Chint Power Systems America 1380 Presidential Drive, Suite 100, Richardson, TX 7SO81 Tel: 855- 584- 7168 Mail: Americasales@chintpower. com Web: www. chintpowersystems. com 0CPSacmxc|
oam
T --- ------'--''-------'----- -- --' -- - ' ' Model Name CPS DPA03- 80OWUS Number of circuits 3 .
ocpo type' Fuse
z---__-- __---_ __- '_--- .-_
Disconnect ! Yes
Compatible inverter( s) i cpssc z7sx oo/ usuoo
Rated voltageuouvac
Rated input , u aonx
Input | conductor size so* 5oo mUCU/AL( 1 z, et l_- --_--Input conduit knockout size Removable bottom plate Rated
output current !___________ 6OOA_____________________ Output conductor . aon» o mUcU/AL pm4se) Output
conduit knockouu, me / nrmovab botuonp Interruptingasmv Disconnect
rating oonA Output
fuse rating / lnnn* 55x36.
2x14J5in( 1400x920x375mm) . iWeight
264 lba/ 12Vkg_____ Padlockable
enclosure ( LOTO) Yes Grounding
bu, ba y' s Breather
vent' Yes ' Enclosure
protection degree NEMA Type 313 Operating
humidity 0% to 95%, non - condensingStandard
2 yearsOcps;
AMERICA
FAM
To
MVTand/ or Recombiner
rl
Datasheet
In -Line Cluster Mounting Bracket
Designed for CPS 250/ 275 kW Inverters & 800 Vac AC Combiners CPS In -Line Cluster Mounting Bracket
The CPSIn -Line Cluster Mounting Bracket is designed to provide a simple, low- cost mounting solution for CPS250/ 275 kW inverters and CPS800 Vac 3:1 AC Combiners. (3) CPS250/275 kW and ( 1) 800 Vac AC Combiner can be mounted onto piles to easily install the equipment for ground mount PVapplications. This solution enables savings on labor and material costs for system designs and installation.
Key Features
Easilymount ( 3) 250/ 275 kW inverters and (1) 800 VacAC Combiner Simplifies Inverter and Combiner installation
Cost-efficient mounting solution
Includes mounting bracket for CPS800 Vac AC Combiner
In -line design to allow efficient working space
o CHINT POWER SYSTEMS AMERICA 2023/ 01- MKT NA Chint Power Systems America 1380 Presidential Drive, Suite 100, Richardson, TX 75081 Tel: 855- 584- 7168 iVlail: America5ales@chintpower. com Web: www. chintpowersystems. com 0cps
Tecmnia| oata
T----------------------------------'--- ---'----- el Name CPS In -Line Cluster Mounting Bracket Material ` [ s1D Om78o ee|
Dimensions 0HxVVxu/ 46. 3x231. 4x6nU 5x 877x17unnn) U-_ Dimensions
of totalClusterMountingBracket including r----' -----------'----------- — ' ------ jTotal
weight of ClusterRack 204lbs/ 120kg________ Compatible
inverters| [ PS ScHz7sKTL-o UsuooT---'--'---------'---'---- - -------- - -- --- ---' i[v | b| combiner[p5DpAos- uuoV/ us T----'-----'--------'—'-'------'---'''------- ~ Installationmethod . Mounted nu3piles (pilesnot included) Standard' z years ClusterComponents
I Equipment
installation vertical beam 8 3 Vertical
beam 6 4 Pile
connector 3 5 Pile
3 ( user supplied)
Datasheet
250/275kW VZ 1500Vdc String Inverters for North America I
CPS SCH275KTL- DO/ US- 800 V2
The 250/275kW high power CPSthree phase string inverters are designed for ground mount applications. The units are high performance, advancedand reliableinvertersdesignedspecificallyfor the North Americanenvironmentand grid.
High efficiencies, wide operating voltages, broad temperature ranges and NEMAType 4X enclosure enable this inverter platform to operate at high performance across many applications. The SCH275KTLinverters include a selectable Active Powerof either250kWor 275kW (factorydefault) with 12MPPTsandareavailablewith either 36fusedPVstring inputsor 24 unfused PVstring inputs. The CPSFlexOMsolution enables communication, controls and remote product upgrades.
Key Features
Anti- PID function
Reactive Power at Night function
CPS FlexOM Gateway enables remote FW upgrades
Integrated DC disconnect switches
Protection functions for enhanced reliability and safety Selectable Max AC Active Power of 250kW or 275kW
UL 1741-5A certified to CA Rule 21, including SA14-18
SAe14 rhAderke- pliesWth
C us ,
PM is o( the FCCRules
12 MPPTs with 36 fused inputs or 24 unfused inputs
Copper and Aluminum compatible AC connections
NEMA Type 4X outdoor rated, tough tested enclosure
Full power capacity up to 42°C
Standard 5 year warranty with extensions to 20 years
Supported comm protocols ( Modbus RTU,TCP/IP, PLC, CAN) UL 1741- 58 and IEEE 1547- 2018 certified
0CHINTPOWERSYSTEMSAiMERICA2023/10-iMKTNA Chint Power Systems America 1380 Presidential Drive, Suite 100, Richardson, TX 7508 Tel: 855- 584- 7168 Mail: America5ales@chintpower. com Web: www. chintpowersystems. com Technical Data
Model Name CPS SCH275KTL- DO/ US- 800- 36 V2 CPS SCH275KTL- DO/ US- 800- 24 V2 D
Max. DC Input Voltage 1500V
Operating DC Input Voltage Range 500- 1450Vdc
Start- up DC Input Voltage/ Power 55OVdc 50OW
MPPT Voltage Range Q PF>0.991 900- 1300Vdc
Number ofMPP Trackers 12 12 -
Max. PV Input Current 30A per MPPT 30A per MPPT
Max. PV Short - Circuit Current 6.0.0A,_50AperMP_PT__ 600A, 50A per MPPT Number of DC Inputs 36 Fused Inputs, 3 per MPPT 24 Non - Fused Inputs DC Disconnection Type Load - rated DC switches
DC Surge Protection Type 11
Max AC Output Power ( Selectable) @ PF> 0. 99 250kW / 275kW Max. AC Apparent Power 27 .. kVA
Rated Output Voltage 800Vac
Output Voltage Range 2 704- 880Vac
Grid Connection Type 3- Phase / PE
Max. AC Output Current @_800Vac 198. 5A
Rated Output Frequency 60Hz
Output Frequency Range2 57 - 63Hz
Power Factor 0. 99 (± 0. 8 adjustable)
Current THD @ Rated Load 3%
Max. Fault Current Contribution ( 1 Cycle RMS) 215. 2A
Max. OCPD Rating 300A
AC Surge Protection Type 11
System and Performance
Max. Efficiency 99. 0%
C" E-C-Efficiency' 9 8-.--5-%--
Stand- by / Night Consumption 5W
Enclosure Protection Degree NEMA Type 4X
Cooling Method Variable speed cooling fans
OperatingTemperatureRange3 22' F to + 140' F - 30° C to + 60° C ( derating from + 107' F + 42° C) I :-Operating Humidity 0 to 100%
operating Altitude 8202ft / 2500m ( no derating)
Audible Noise 80dBA @ 1m and 25° C
User Interface and Display LED indicators, WiFi + APP
Inverter Monitoring
4 Modbus RS485 PLC / CAN
Site Level Monitoring CPS FlexOM ( 1 per 32 inverters)
ModbusDataMapping SunSpec CPS
Remote Diagnostics / FW Upgrade Functions Standard / ( with FlexOM Gateway) Dimensions ( HxWxD) 27. 2 x 41. 3 x 15. 7in ( 690 x 1050 x 400mm) Weight Approx. 262lbs / 119kg
Mounting Installation Angle Vertical installation
AC Termination Stud Type Terminal ( Wire range: 4/ OAWG — 750kcmil AL/ CU, lugs not supplied) 36 Fused Input; Screw Clamp Fuse Holder ( Wire range; # 14 - # 8 AWG CU) i DC Termination
24 Non - Fused Input: Screw Clamp Terminal ( Wire range: # 14 - # 8 and # 6 - # 4 AWG CU) 1 Fused String ( 3 25A fuses provided ( Fuse values up to 30A acceptable) Safety
Certifications and Standards UL1741- SAISB Ed. 3, CSA- 22. 2 NO. 107. 1- 16, JEEE1547a- 2014, IEEE1547- 2018, FCC PART15 Selectable Grid Standard IEEE 1547a- 2014, IEEE 1547- 2018, CA Rule 21, ISO - NE Smart - Grid Features Volt- RideThru, Freq- RideThru, Ramp - Rate, Specified- PF, Volt- Var, Freq- Watt, Volt -Watt Protection Functions
iieaciivePowerat Night Yes
Xnti-P_I_D,fin_ct_i_o_n_ Yes
Insulation Resistance Monitoring Yes
Onboard Fault Oscillography Yes
PV MPPT Current Monitoring Yes
Residual Current Monitoring Yes
Output Overcurrent Protection Yes
Output Short - Circuit Protection Yes
Output Overvoltage Protection Ye.
Warranty
Standard 5 Years
Extended iTerms 10, 15 and 20 years
1) See user manual for further information regarding MPPT Voltage Range when operating at non - unity PF 5) One threaded hole per MPPT for connecting # 6 - # 4 AWG CU 2) The " Output Voltage Range" and " Output Frequency Range" may differ according to the specific grid standard. 6) Fused string inputs only applicable to the SCH275KTL 36- input model. 3) See user manual for further requirements regarding non - operating conditions. 4) CPS AC - PLC Kit required for AC PLC communication.
ForeFront Power Design & Engineering Standards
V2. 1
Change History Record
VERSION
NUMBER
EFFECTIVE
DATE
DESCRIPTION OFGHANGE APPROVED BY
1. 0 05/ 18/ 2017 Initialversion Dan Jordan
Director of Engineering
1. 4 3/ 8/ 2019 New Version Aaron Sanders
Director of En2ineerniiz
2. 0 Updated version Aaron Sanders
Director of Engineering
2. 1 9/ 12/ 2022 Updated Version Aaron Sanders
Director of Engineering
1. Table of Contents
ChangeHistory Record..................................................................................................................... 2 Tableof Contents.............................................................................................................................. 4 Section1: Introduction..................................................................................................................... 5 Section 2: Design Codes & Standards.............................................................................................. 6 Section3: Site Information............................................................................................................... 7
3.1: Site Information for Rooftop Projects................................................................................ 7
3. 2 Site Information for Ground Mount Projects...................................................................... 8
3.3 Site Information for Canopy Mount Projects .................... :................................................. 8 Section 4: Drawing Requirements.................................................................................................. 10 Section 5: Design & Engineering Review........................................................................................ 12
5. 1- Design Mobilization...............................................................................:.......................... 12
5. 2 - Design Review.................................................................................................................. 12
5. 3 - Construction/ Term- Out.................................................................................................. 13 Figure 1: Design Engineering Process................................................................................ 14 Section6: Design Standards........................................................................................................... 15
6. 1 - Module Layout................:................................................................................................ 15
6. 1.a - Existing Site Features............................................................................................... 15
6. Lb - Define Useable. PV space.......................................................................................... 15
6. Lc - Module Array Design................................................................................................ 16
6. 2 - Electrical Requirements.................................................................................................. 17
6. 2. a - General Specifications............................................................................................. 17
6. 2. b - Inverter Sizing/ Selection......................................................................................... 18
6. 2. c - Equipment Selection................................................................................................ 18
6. 2. d - Equipment Locations............................................................................................... 18
6. 2. e - Grounding ................................................................................................................. 19
6.21- Disconnecting Means................................................................................................ 20
6.2.g - Interconnection................................................:...................................................... 20 Figure 2: Example POCC Identification Process................................................................. 22
6. 2. h - Metering/ Monitoring................................................................................................ 22
6. 2. i - Labels & Markings..................................................................................................... 23
6.2.j - Wiring ........................................................................................................................ 24
6. 3 - Structural......................................................................................................................... 27 Section 7: Equipment Specifications............................................................................................. 29 Section 8: Glossary of Terms 30
1 Introduction
This Design Standards document is intended to provide an overview of expectations and standards for which we strive to implement across all projects. Above all, regulatory agencies such as NEC, LIL, and local jurisdictions/ utilities set the minimum standard; however, additional guidance has been provided to drive project designto meet the requirements of ForeFront Power' s entire operations, including Service and Safety.
Additionally, some requirements are those deemed of highest importance from our investment partners and their corresponding Independent Engineering consultants. ( In the eventof aconflictbetweenstatutory/regulatoryrequirementsandthis document, statutory and regulatory requirementstake precedence.).Aseachproject variesfrom region to region, andcustomerto customer, processesarein placeto approvevariancesfromthis designguide; however, these efforts must be communicated early in the design phase, to allow time for qualification anddue diligenceefforts. Everyeffort will be madeto work closelywith the EPC Contractor or Design Build Contractor ( referred to as " External Design Team") to make the design process seamless and optimal for all parties involved. FFPdesign specifications must be followed unless deviation is approved by FFPin writing.
The driving factors in creating these standards are as follows: 1) Designingfor 20+ year operational timelines and the serviceability of systems post -installation, 2) Meeting all applicable code and regulatory compliance, 3) Optimizing cost and production, 4) Ensuring both installation andservicesafety, 5) Meetingthe objectivesand requirementsof the system owner and their consultants, 6) Delivering a ForeFront Power caliber system, 7) Creating new opportunities by excellence in delivery and operation.
POWER
Section 2: Design Codes & Standards
The following documents apply to this standards document. Version of code will be dictated by jurisdiction and local adoption i.e. NECversion. Additionally, some local incentive programs may have special requirements as part of the solar program that may go above and beyond local code or ForeFront Power guidelines - it is the responsibility of the External Design Team to be aware of these requirements, and to design accordingly.
Codes:
0 National ElectricCode
National Electric Safety Code
0 International Building Code
National Fire Protection Agency
Applicable State Specific Building/ Electrical Codes and Fire Codes Local Fire Requirements
ADA
DSA
Standards:
ASTM
ASCE
IEEE
UL
Other Requirements:
Project Specific Power Purchase Agreement or other customer agreement EPCAgreements
ForeFront Power Service Inspection/ Acceptance Inspection ALTA/ ASCM Standard TableA
Equipment NamingConvention
ForeFront Power Project Minimum Submittal List
Utility Specific Interconnection Guidelines and Minimum Technical Requirements Incentive Program Technical Requirements ( if applicable) 3: Site Information
ForeFront Power will require certain site information as outlined below. This document is only intended to provide External Design Team with a general overview of what is typical; project specific documentation should be discussed during the pre -engineering phase of a project.
The due diligence will be a coordinated effort, with site information and data gathering performed by the External DesignTeam, or in certain casesby ForeFront power, and a combined effort to bring a design to final approval stages.
Site Information for ALL Projects
External Design Team to perform on -site evaluation of existing conditions, with the following deliverables for all projects:
Arc Flash hazard Analysis and labels for all DC and AC equipment in the PV System above 50 volts
Load flow calculationsrequiredwhen interconnection to non -linear bussingwith a breaker. Thesewill alsobe requiredon anyinterconnectionwhen either the sum of existingbreakersor sum of existingbreakers + amperage from PV System equal or exceedthe rating of the bussing.
Coordination Study for anySitethat requiresmedium voltagegearor POCC, for system sizes of 1 MW AC and larger, " campus" type settings, multiple interconnections for a single host, " critical" load at site (datacenter, hospital, prison, water treatment facility, etc.), and anysitethat will makeuseof settingsfor protection devices, or modify/ replaceanyprogrammableprotection devicesin the existing facility equipment.
Site Photos and other Site Specific Information uponrequest.
3.2Site Information for Rooftop Projects
External Design Team to perform on -site evaluation of existing conditions, with the following deliverablesfor rooftop projects:
Preliminary Structural Report demonstrating that the existing structure can withstand the additional loading from the PVsystem.
Written approval to install PV system from roof warrantyholder.
Roof report of existing conditions
Lightningrevalidation isrequiredfor anysite whereexistinglightning protection systems exist on the roof. These systems typically are made up of air terminals ( small or large `lightning rods') connectedto eachother and largemetal equipment with a network of bare, braided aluminum cable. When installing new equipment on these roofs, the lightning protection certification is invalidatedand must be revalidated. The revalidation usuallyinvolvesaddition of someequipment (airterminals andcable) to tie' the new PVsystem equipment to the existing lightning protection system.
3. 3 Site Information for Ground Mount Projects
If not already provided by Forefront Power, the External Design Team shall perform on - site evaluation of existing conditions, with the following deliverables for ground - mount projects, to the extent required by the external design team' s scope of work::
Geo-technical study (SeeSection 3.4 for detailed report requirements) Interconnection path and any required access, easement, and ROW (right of way) approvals required to secure identified routing to POCC.
ALTAor boundary survey referenced to all ownership, easements & ROW' s - reference document for ACSMStandard Table A specifications, including underground utility location via ground penetrating radar. (Title search will be provided by ForeFront Power).
Legal access and easement crossing license(s) as required.
Environmental due diligence items including wetlands orfloodplain studies, site specific environmental approvals, Phase 1 ESA studies, CEQA/ FAA/ NEPA, or other regulatory approvals as required.
All local and jurisdictional permit requirements must be identified as part of the overarching permit process and should be communicated and planned as part of the master project schedule. Typical permits that may be required for ground projects include, but are not limited to: Zoningand/or Planning, T&ESpecies, StormWater Management, Fugitive Dust Permit, Land Disturbance, State Lands - Historical, EPA .
Section 401, USFWS, Grading/ Erosion Control permits, DSA,etc.
3.4 Site Information for Canopy Mount Projects
If not alreadyprovided by Forefront Power, the ExternalDesignTeamto perform on - site evaluation of existing conditions, with the following deliverables for canopy projects, to the extent required by the external design team' s scope of work:
Geo-technical study (SeeSection 3.4 fordetailed report requirements) Interconnection path and any required access, easement, and ROW (right of way) approvalsrequiredto secureidentified routing to POCC.
Underground utility location, completed via ground penetrating radar, will be plotted and mapped on the site plan drawings.
ALTAor boundary suvey referenced to all ownership, easements & ROW' s - reference document for ACSM Standard Table A specifications. ( Title search will be provided by ForeFront Power).
Snow Loading requirements. Canopies in regions with snow load of 10 PSFor greater must beY-stylesothat snowdoesnot shedonto personsandmaterialsin the parking lot. External Design Team and Forefront Power can collaborate on the implementation of T-Structureswith arrestingdevicesasan alternate solution to Y-stylestructures.
FOREFRONT
DER
Geotechnical Report Requirements for Ground & Canopy Projects If not already provided by Forefront Power, Geotechnical Reports must be no more than 1 year old and prepared for the PVinstallation. If older, or geotechnical reports not specifically prepared for the PVinstallation are to be used, the Geotechnical Engineer of Record must state in writing that the report is applicable
to the PVinstallation. The geotechnical investigation must include a sufficient subsurface exploration ( roughly one exploratory bore or test pit per acre, excavated to twice the anticipated foundation depth). Geotechnical Reports will be completed in accordance with the approved Forefront Power geotechnical scope of work. Geotechnical report must, generally, contain thefollowing:
Soils report for foundation design
Recommendations for foundation types and design parameters Boring maps and testing results
Ground water and subsurface conditions ( note level of wet - season high water depth if ground water is not encountered)
Soil resistivity
Site development recommendations ( if site grading isincluded) Parameter of seismic design ( site class at a minimum)
Corrosive properties of soils to concrete ( structural calculations should note concrete type and reference geotechnical findings)
Corrosive properties of soils to buried metal for projects with piles (structural calculations should note that foundation materials and coatings ( screws, piles, etc) are consistent with 30+ year life in soils with corrosive properties called out in geotechnical findings)
Soilclassification, geotechnicalhazards, and risk mitigation strategies (e.g., settlement potential, expansive soil, liquefaction, collapsible soil, frost heave/ adfreeze, etc.)
For projects with medium voltage interconnections, field electrical resistivity testing or assumptions used for design and documentation of resource for all medium voltage projects (electrical calculations should showhow grounding design is related to soil electrical resistivity measured in soil during geotechnical investigation) For projects with medium voltage interconnections, thermal resistivity testing of soils or assumptions used for design and documentation of resource all medium voltage projects (electrical calcs should show that temp rise due to ohmic losses for any underground conductors will not exceed temperature rating of wire, and should be tied to measured thermal resistivity of soil in geotechnical results.
Contractors Construction - QA/QCplan forfoundations
Infiltration Testingon ground mounted projects. Infiltration testing will be completed on the ground surface soils located within the array footprint. Infiltration testing will be performed in accordance with relevant ASTMguidelines.
Piletesting observation, tension and lateralsarerequiredfor ground mount system designs. Pile foundation designs should be predicated upon results published in the geotechnical report
Site Information for Landfill Proiects
Contained within the geotechnical report:
Evaluation and recommendations for incorporation of total and differential settlement of the waste fill, with and without influence of the PVsystem Evaluationof landfill slope andsoilstability, with andwithout influenceon thePV system
Impact of the PVsystem foundations and/ or ballast on the landfill cap and geomembranes ( are penetrations of the landfill cap proposed?) Evaluationof the effectof the PVsysteminstallation on landfill gas, leachateand groundwater collection and monitoring systems, and recommendations for mitigation, if necessary
Grading and drainage:
Evaluation of the PVsystem on the effect on any vegetation layer and recommendations for mitigation
Evaluation of changes in drainage and recommendations for additional erosion control needed as part of the PVsystem installation
Evaluation of land -fill As -Built drawings and confirmation that any items requiring excavation are placed clear of the landfill cap or buried waste. Test pits to confirm as -built limits, and in locations of planned excavations, are required Review of the Post - Closure Use Permit ( PCUP) and verification that the design and reporting requirementswill becompliedwith aspart of the EPCprocess.
Section 4: Drawing Requirements
External Design Team must provide both preliminary and permitting drawing packages in PDF format as a singular file. Unless otherwise specified by ForeFront Power, the External Design Team can assume only one set of drawings is required per site, even if a given site contains multiple interconnections. In the case where a given site contains multiple interconnections, it is possible for each interconnection to be considered a single asset and two assets at a single site may be financed by different investors or in different investment tranches. Thus, ForeFront Power reserves the right to request that each interconnection have its own set of drawings if deemed necessary by ForeFront Power.
All Issue For Permit or Issued for Construction drawings must be stamped/ sealed by a licensed professional in the relevant discipline and state.
All drawing changesthroughout shall be noted in a changelogin excelformat. All milestone designsetsmust be accompaniedby a changelogincluding initial designlisting changesfrom original FFPdesign (if applicable). FFPshall providea changelogtemplate in excel, if desired.
Changes required to be noted:
Change in system size or equipment quantities
Changes in tilt, azimuth, or spacing of array.
Changes in location of array(s) or other equipment locations.
Changes to engineering calculations.
Changesto electrical configuration or wiring design.
Change in equipment make or model.
Change in sheet count (this includes sheets added with natural design progress).
Any error that has been corrected.
Anychangeresulting directly from a comment from FFP, customer, or any other third party reviewer.
Any other change not listed that may help reviewers with design context.
Additionally, the following "ground" rulesmust befollowed during the designphase:
All preliminarydrawing packagesshouldinclude, but are not limited to, thefollowing (if not otherwise clarified by the requestor):
o Module Layout
o Electrical Site Plan
o Linediagramillustrating both DCandACsideof the solarsystem, aswell asthe
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SCADAand or DAScomponents required for the project
o Module racking system specs
All permitting drawing packagesshould include, but arenot limited to, thefollowing:
o Title Sheet including drawing index, applicable codes, system size (DCand AC), breakdown of module quantities/ wattages, and PElicense numbers with expiration dates
o Site Plan and Elevations ( if required byAHJ)
o Electrical and structural details, required for a successful permit from the relevant AHJ, including the California Division of State Architects, ( DSA) o DSApermit sets will also include all existing A -Numbers for all existing building on the school campus.
o Module Layout including tilt/ azimuth, nearby obstructions with their full dimensions, any obstructions distance to the array, perimeter setbacks, row spacing, array fence/ gates (ground projects only), and service access paths ground projects only)
o ALTAor Boundary Survey (all project types (ground, canopy, and rooftop), with the only exception being rooftop projects where the POCClocation is in or on the same building that contains the solar arrays)
o Civil Plan (ground and canopy projects, as applicable) - Include applicable sitepreparation requirements, site survey, grading, cut and fill requirements, compaction requirements, soil stabilization, storm water management, erosioncontrol, drainage, trench details, roadsdetails,etc. Forbuilding permits include SWPPP, NPDESand N01information needed for each relevant permit.
o Fire Aisle Locations and vehicle means of egress and ingress o Electrical Site Plan to include locations of all equipment such as modules, disconnecting combiner boxes, conduit/ raceways/ trenches, disconnect switches, inverters, transformers, POCC, and string/ disconnecting combiner boxlayout boundarieswith all equipmentlabeledper NamingConvention. o Table showing number of modules per string, number of strings per combiner or string inverter, number of combiners per inverter ( for central inverters).
Table should also include module wattages, tilt angle, azimuth, or structure type if any of these vary on multiple arrays.
o 3 line diagram including number of modules in series, number of strings in parallel per combiner, disconnecting combiner box part number/ fuse size/amperage, DC/ACdisconnectmanufacturerand part numbers,existing o Structuraland electricalcalculationsfor the entire project o Wire schedule in table format to include location ( between POCC and AC disconnect, etc.), design ampacity, voltage, conductor type, conductor size, conductor quantity, ground size, neutral size, conduit type, conduit size, length of run, and voltage drop.
o ForeFront Power provided Electrical Notes (Provided for information only and where applicable. The EDT to provide project specific Notes as necessary.) o Electrical details - Conduit routing/ mounting, equipment mounting/ installation, module grounding, equipment grounding, wire management, penetration details, etc.
o Equipment pad electrical details ( if applicable) to include locations of all equipment and working clearances
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o Equipmentpad structural details (if applicable) to includesecurementdetails, pad thickness/ concrete strength/ reinforcement, etc.
o Inverter shade structure
o Structural ( Roof) - Include module securement, roof integration details, racking layout, racking design details, material grade/ finish, hardware torque specifications, tolerances, corrosion protection, etc.
o Structural ( Ground/ Canopy) - Include module securement, foundation layout, foundation design details, racking design details, structural notes, material grade/ finish, hardware torque specifications, tolerances, corrosion protection, etc.
o Construction details for all assemblies including torque and weld specifications.
o Module, Disconnecting Combiner Box (if applicable), and Inverter spec sheets
o Labels and Markings - i.e. POCC, disconnecting combiner boxes, DC/AC switches, Utility required labels per ForeFront Power naming convention see Equipment Labeling Convention Standard)
o ForeFront Power will either ( i) provide a DASspecification and list of required instrumentation, ( ii) approve a specification and list of instrumentation provided by the EDT, or (iii), furnish a DASsystem for the installer to include in the design and install on site.
Title block must include ForeFront Power project number on all sheets, unless this would interfere with plan check. If unable to place ForeFront Power project number on title block, the project number must be displayed on the title sheet.
All drawings must use a conventional scale, with notations showing each sheet convention, as well as dimensioning ( graphic) scales from which service personnel can measure on plans in the field.
All layout drawings must show a North arrow, as applicable to the specificsheet.
All drawings must be dated, with updated versions, using conventional " REV" control measures and documentation.
All Issued for Construction drawings, and subsequent revisions, final as -built drawings, and Record Drawings must be stamped and signed by the registered Professional Engineer of record, licensed in the state for the givenproject.
Additionally, when required by the AHJ, any other version of a drawing requiring stamp and signature, will be so provided.
Utilize adequate line weights as appropriate, to help differentiate on what is important to focus on, and what is simply background detail.
Provide ForeFront Power project managers all applicable PDFdrawing packagesfor archiving, with all versionsand updatesthrough final completion. Complete construction drawings and version updates must be delivered to ForeFront Power, including permitting sets, construction drawings, as- builtdrawings, and Record Drawings.
As -built drawings must match equipment naming of DAS.
5 Design & Engineering Review
During the opportunity assessment phase, if applicable, and continuing as an opportunity progresses through the development cycle, ForeFront Power will provide support and design review stages to help guide the opportunity and allow for exchange of ideas andproposals.
ForeFront Power will also coordinate review of design iterations with the site host/ offtaker as required.
Design Mobilization
Upon commercial and legal agreement finalization between all stakeholders, the ExternalDesignTeamand ForeFrontPowershall hold a kickoff meetingto discuss proposed project details including the following:
o Schedules
o Design Review process
o Scope of Work
o As -sold system specs
o Major equipment
o Customer requirements
o Material procurement
o Data Acquisition System ( DAS)
o Any pertinent project details to be communicatedbetween parties.
The External Design Team should provide updated project schedules, high level design documents including module layouts and line diagrams, as well as any technology specifications for modules, inverters, and racking systems. Equipment selections for these (3) major components should be approved by ForeFront Power prior to proceeding with full designscope.
2 Design Review
Prior to completion of the permitting drawing package, the External DesignTeam shall initiate preliminary design review sessions in conjunction with the project schedule, with the appropriate stakeholders at ForeFront Power to review the plans and specs.
Yieldestimates (kwh per KWDC) arecreatedin PVSYSTusingpreliminary design information suchas: module/inverterselection, systemsize, tilt, azimuth, ground coverage ratio, DC:ACratio, and shading from near or far obstructions. Should these design features ( or any other characteristics that will impact the yield) change, External Design Team shall notify ForeFront Power to arrange for PVSYSTestimates to be updated.
Prior to permit submittals, and after ForeFront Power's preliminary drawing package feedback is received, the External Design Team shall initiate design review sessions in conjunction with the project schedule, with the appropriate stakeholders at ForeFront Power to review the plans and specs.
The External Design Team shall provide all design drawings in AutoCAD and PDF
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format, aswell asanyengineeringreportsincludingALTAsurveys, civil, geo-technical, structural calculations, revised energy estimates or coordination studies asapplicable.
Coordination studies are required when there the site requires medium voltage gear or POCC, for system sizes of 1 MW AC and larger, " campus" type settings, multiple interconnections for a single host, " critical" load at site (data center, hospital, prison, water treatment facility, etc.), and any site that will make use of settings for protection devices, or modify/ replace any programmable protection devices in the existing facility equipment.
Typical review timelines for a single project should be (5) business days, unless otherwise agreed upon, and will include feedback from all ForeFront Power stakeholders. Comments will be provided in a Word document with response instructions. Please note that thorough responses with sheet numbers references will result in optimal response times and minimize re -review cycles. Once ForeFront Power verifies that the External Design Team' s response addresses the initial concern, ForeFront Power will insert " RESOLVED" in the response column. The External Design Team should expect a minimum of one design re -review cycle and Construction NTPwill not be issued until ForeFront Power approves drawing package.
Upon " Permit Approval", the External Design Team shall provide construction drawings and reports in AutoCAD and PDF format to ForeFront Power for record keeping. AHJbackcheckcommentswill be providedto ForefrontPower, andall revisions to drawings will be clouded and annotated with the appropriate revision number. The drawing legend will be kept current at all times.
5. 3 Construction/ Term- Out
Upon mechanical completion of a project ( local inspections and approval obtained), the External Design Team shall furnish final as -built drawings and or Record Drawings to Forefront Power.
As -built plansand RecordDrawingsshallcaptureanyvariancesfrom the construction or permit drawings, and shall accurately reflect site conditionsfor:
o Equipment placement including module arrays, DCand AC components, conduit routing, equipment pad details, meteringand monitoring equipment including weather station, and interconnection.
o Include module layouts, locations and heights ( labeled on drawing) for any shade creating sources including parapet walls, trees, existing rooftop equipment - this information will be used by the Independent Engineer to validate any shade assumptions.
o Confirm sizing of equipment, specifications, equipment labeling and identification ( disconnecting combiners, disconnects, source circuits, inverters, etc.).
o Label drawings" as-builts" with date, include electronic professional engineering stamps and signatures for all disciplines.
External Design Team or the EPCContractor will create and provide Closeout Manuals upon completion of the project. These manuals will include all warranty information, final project drawings, andother closeoutinformation asso requested by Forefront Power.
Design Standards
Thegoal of standardizingdesign requirementsfor all ForeFrontPowerfinanced projects is to ensure projects take into account considerations for ForeFront Power' s service requirements, safety aspects that are designed into projects, and specifying high quality components that meet the demands of a 20+ year lifetime, as well as requirements known by various Independent Engineers. It is acknowledged that utilities, jurisdictions, and customers will have various requirements that may test our standards, and concessions will be made on a case by case basis asappropriate.
6_1 Module Layout
6. 1. a — Existing Site Features
Provide architectural plan view of dimensions of and setbacks from existingbuilding and relevant features including all rooftop obstructions and relative height.
Provide dimensions of and setbacks from any additional shade sources that may exist in adjacent areas to the building - i.e. trees, buildings, power poles,etc.
Provide heights of parapet walls, including any variances around the perimeter of the building - i.e. store front signage, etc.
Provideazimuthangleof the site facility. Use1800to representdue south, increasing angle clockwise.
Provide building height and variances in rooftop areas - i.e. sloping roof, drainage areas, etc.
6. 1. b - Define Useable PV space
Consider all required setbacks and accessaisles as defined by the local AHJ i.e.
CaliforniaFireRequirements, known customerrequirements, safety, equipment clearances, and shade sources. To the extent that ForeFront Power is providing this information in a 30% design document, the EDT or EPC Contractor will need to verify array placement on balance with provided survey and mapping and geotechnical information provided.
Utilizethe following standardrooftop setbacksutilized byForeFrontPower:
o Comply with NEC110.26 for any rooftop electrical equipment ( does not apply to PVmodules).
o Provideminimum 4' setback (or greaterif requiredby building owner) onall sides of HVAC or similar type equipment.
o Provide minimum 4' setback to skylights, smoke - hatches. o Provide minimum 4' setback to roof hatches, including at least (1) 4' access aisle directly to building edge.
o Provide minimum 6' setback from building edge for any buildings with parapet walls 42" orhigher.
o Provide minimum 10' setback from building edge for any buildings with parapetwalls41" or less. Alternatively, EPCcontractor mayutilize 6' setback from building edgefor anybuildingswith parapetwalls41" or lessif permanent, structurally engineered safety tie offs are installed as the cost of EPC contractor.
o Provide minimum 6' setback from drainage systems, swales, or roof pitches greater than 50 slope.
o Accessto every module on rooftops is required - fully `tiled' layouts are not acceptable. At aminimum, a 10" gapis requiredeverytwo rowsfor serviceability.
Utilize the following standard ground mount setbacks utilized byForeFront Power:
o Provide a minimum of (1) vehicular gates with specifics to be determined on a case by case basis.
o Provide 15' minimum setback to fencing around PVarray, unless otherwise directed by the AHJ.
o Provide 15' minimum drive aisle to equipmentpad, unless otherwise directed by the AHJ.
o More drive aisles might be required for serviceability to be determined on a case by case basis.
o East-West gaps between racking `tables' in fixed -tilt ground mount projects are required. This gap shall be the larger of 6" and twice the East-West elevation changebetweenthe tables. At veryflat sites, the gapwill be 6". At a site with 12" elevation change between adjacent tables, the gap will be24".
For ground -mounted PVarrays, the site shall be secured by perimeter fencing and gates to secure and isolate the system from the public or on -site operations as applicable. Typical fencing shall include standard tall, # 9- gauge wire mesh fencing and wire fasteners with 1' barbed wire at the top.
Fencepostfoundationsshallbeengineeredto site conditions, and grounded per NEC guidelines.
6. 1. c — Module Array Design
Modulesshall begroupedand organizedin a mannerwhich minimizesthe useof jumpers" to complete source circuits.
Group modules to best optimize DCsource circuit wiring todisconnecting combiner boxes, and minimize conductor length to theinverter.
Rows of modules shall be grouped in full or half source circuits, for ease of wire routing and grouping.
Modulesshall begroupedin a mannerthat bestoptimizesthe requirementsfor the specific racking structure, taking into account all design requirements, roof penetration scheme, ballasting requirements, wind loading, and minimizing customization, as well as optimal module to steel ratios when laying out canopy projects with a DSAPre -Approved Pre -Check Detail.
Provide all relative dimensions from a common reference point, with sufficient detail providedto showconformanceto setbackandshaderequirements, aswell asthose required to instruct installation crews on field arraylayouts.
All modules feeding a single MPPTmust be of the sametilt and azimuth angles.
When site conditions require multiple tilt and/ or azimuth angles, utilize multiple MPPTinverters to maximize poweroutput.
Array should be designed with access and washing considerations in mind. Use of
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top clamps that are not flush with top of module frames are prohibited.
6. 2 Electrical Requirements
6. 2. a — General Specifications
All design elements shall above all others, meet applicable NEC and local AHJ requirements.
All specified equipment shall be designed, and installed per manufacturer requirements, in order to maintain warranties. Provide torque settings for all mechanical/ electrical connections.
All specified components are listed by the appropriate NRTL, for their intended use.
Verify module source circuit voltage is within " Inverter MPPT" operatingrange. o Provide calculations for module string sizing, comply to NEC690.7, or any section more recently adopted by the NEC, using ASHRAEclimate data expected temperatures per NEC, for crysta[line only).
Optionally, VOCmay be calculated per2017 NECguidelines under engineering supervision where allowed by local jurisdiction. o Confirm module string sizing VMPis above minimum " MPPT" voltage range for highest expected temperatures.
Overcurrent protection must be provided per NEC240 as applicable. o Specific attention shall be made to 240.413, 240.4C for choosingappropriately sized devices, or other NECsections should they be more relevant. o Standards Ampere ratings shall be made from NEC 240. 6, or other NEC sections if more relevant.
Specify listed rain -tight fittings where EMTis utilized.
All systems shall have a single point of disconnect on the DCside located within or adjacent to the array locations, accessible and visible for a system operator, regardless of system POCCor Utility disconnect location, for single or multiple inverter systems.
String inverters shall have 1 DC disconnect per inverter.
All aboveground conductors shall be installed in conduit. Conduit shall be spaced and supported appropriately and routed in an organized manner. Direct burial is OK if all codes are met for utility scale projects, subject to confirmation from ForeFront Power, provided that any exposed wires are sleeved in conduit. o String wiring maybe installed within array per NEC690.31(A). Array must remain not readily accessible. Wiring must be secured to racking and must remain clear of sharp edges.
Canopy systems must utilize RMCconduit above grade up to 8'. Transition to EMTor other metallic conduit is acceptable 8' or higher above grade. Conduit must be encased within concrete canopy foundation.
o If canopy foundations are not 2' or higher or conduit cannot be encased above 2', bollards are required to protect conduit from vehicle strikes unless canopy is not subject to vehicle traffic including maintenance and landscaping vehicles.
Buried conduit shall abide by NECrequirements for depth and cover appropriate to conditions and voltage.
o Where communication lines are required along underground conduit, a separate conduit minimum 1" shall be utilized.
Where conduit or wire is exposed to direct sunlight, they shall be listed/ rated for the appropriate usetype.
Low voltage AC conduit shall be sized to include a neutral conductor in the circuit regardlessof plannedinstallation of neutralconductor.
Hardware used to secure modules, ground lugs, and other electrical componentsin outdoor environments to be stainless steel or hot dipped galvanized.
All NEMA3 and 4 boxes shall be equipped with a listed drain plug (NEMA3 may use a weep hole) installed to allow water to drain. Any modification made to as - manufactured equipment shall be done in such a way as to maintain all listedratings.
Dry type medium voltage ISUpower transformers are to be avoided unless specific conditions warrant the use of dry -type, and will require approval from ForeFront power. Dry -type transformersareonly acceptableunder 1000kVAfor auxiliarypower such as DAS, trackers, etc.
6. 2. b — Inverter Sizing
Invertertechnologymust be anapprovedmanufacturerand capableof supporting the intended DASmonitoring solution.
Target inverter DCpower input should be best financial outcome that is within allowable equipment specifications.
Whenpreliminary designsare provided by FFP, equipment changesshall match specifications as close as possible to initial design.
Inverter inputs should always reference manufacturer guidelines for the following parameters including:
o Maximum DC watts input.
o Maximum DC amperageinput.
o Approved DC wire size and number inputs.
Inverter MPPTloading must be balanced to the greatest extent possible. Preference is to useparallel MPPTmodewhen availableand minimal impact to design (shading, different string size, different tilt/ azimuth, or large difference in distances. o Stringingdesignmust bedocumentedin detail on designdrawings. o If stringing cannot be balancedbetweenMPPTinputs, FFPengineeringmust be informed and approve design.
On occasion, Inverter sizing may exceed recommended parameters for DCsystem inputs; this must be approved in writing from the manufacturer and not impact available local incentives.
All central inverters, when approved, shall include zone monitoring ordered with the inverters.
All inverters shall be updated to latestfirmware available priorto commissioning.
6. 2. c — Equipment Selection
FFPreserves the right to approve or deny any equipment selections.
Prior to installation, ForeFront Power shall review submittals for all proposed equipment. Materialsubmittals mustspecifymake/model/options of equipment to be used; submittals consisting of brochures or cutsheets without markups are not acceptable. Context must also be provided indicating where and how
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equipment is intended to be installed.
All equipment shall be verified for approved use for site specific climate or location featuressuchaselevation, temperature, andintendedwiring configuration.
PID, or Potential Induced Degradation, is a phenomenon which occurs in crystalline modulescoupledwith ungroundedinvertersresultingin a graduallossof powerover time. Modules and inverters must be combined in a way that does not allow for the risk of PID. Options include using PIDfree modules or PIDmitigation boxes with ungrounded inverters.
All panelboards and equipment enclosures shall be pad -lockable, when possible and allowable by code.
6. 2. d — Equipment Locations
All electrical equipment shall meet minimum working space clearance as required per NEC 110. 26.
Provide working space permitting at least 90° opening of all hinged doors.
Comply with NEC 110. 26( C)
All equipment shall be installed in a secured location, either by lock orlocation.
Provide at least ( 1) entrance not less than T wide in fenced locations.
Panel boards and switchboards shall be installed to avoid direct sunlight to the greatest extent possible. if panels/ switchboards must be exposed to direct sunlight, then the design and equipment selection must consider the additional heat load and must bedesignedto avoidderatingor nuisancetripping that affects performance. Some recommendations for avoiding excessive heat:
o Spacing panel breakers with spaces between.
o Ventilated enclosures, where possible.
o Upgraded breaker and wire ratings.
o Shade structure to block sunlight.
o If nuisance tripping occurs, external design and construction team must remediate to prevent future nuisance tripping.
Inverters shall avoid direct sunlight and especially southern aspects. o Inverters must be installed in a manner to avoid derating or shutdowns due to excessive heat. This can be accomplished with any combination of the following: installedto avoidsunlight/heat, selectinginvertersthat can tolerate highheat loads, oversizinginvertersto overcomederates (must be acceptableby interconnectionapproval), constructingshadestructure. o If deratingor shutdownsoccurduring operation leadingto performance degradation, external design and construction team must remediate inverters.
o East aspects are preferred if the choices are between west, south, and east.
Utility ACDisconnect must be located as close as possible to the POCC, and meet requirements of local AHJ and Utility.
All combiner boxesshall havedisconnectingmeansnearthe boxor integrated as part of the combiner box.
DAS shall be located near inverter and/ or PVmeter location. o Direct sunlight and thermal loads must be considered for DAS enclosures. If the
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DASfails to operate properlydueto excessiveheat, the DASequipment must be remediated.
EquipmentpadshousingInverters.and other electricalequipment shall bemade accessibleby location or other meansprovidedby design. Vehicleaccesswith sufficient spacefor turns should beprovided, wherelocatedin freefield, gravel roads or other means of reliable, all- weather vehicle access shall beprovided.
Systems with multiple inverters and/ or transformers in separate locations across the site location should provide a meansfor a singledisconnectingmeans, located at an accessible point adjacent or within the PVarraysite when connecting to a single POI. o On sites with multiple POIs, each POI shall have a single consolidated disconnecting means.
6. 2. e - Grounding, (all system types as required)
ProvidePVSystemgroundingin accordanceto NEC250.21, 250.4, 250.24(C) and related code sections as applicable.
Equipmentgroundingconductorsandsystemgroundconductorsshall haveasshort a distance to ground as possible, with minimal turns.
Module source circuits shall be grounded in accordance with NEC690.42.
Enclosuresshall beproperly preparedwith removalof paint/finish whengrounding equipment with termination grounding lugs.
The connection to a module shall be arranged in a manner that removal of one module from the source circuit does not interrupt a grounded conductor toadjacent modules.
Groundingsystemcomponentsshallbelistedfor their use, includingbut not limited to:
Grounding lugs, ground rods, clamps/crimps. Grounding devices exposed to the climate shall be rated for direct burial.
Modulesshall be groundedin accordancewith manufacturerrequirements, the corresponding UL listing, and the NEC.
o Conductorsusedfor moduleframegroundingand other exposedmetal equipment grounding must be bare
All non -current carryingexposedmetal partsofj-boxes, equipment, andappliances shall be grounded per NEC690.43.
Equipmentgroundingconductorsshall besizedin accordancewith NEC690.45and 250. 122 ( proportionality adjustment).
Specifya manufacturedgroundingelectrodeto be installedwithin the inverter cabinet, that is corrosion resistant, 5/ 8" diameter, and minimum 8' driven into soil for central inverter systems.
Complywith NEC250.166for sizingof DCgroundingelectrodeconductorsand install per250. 64.
ACgrounding electrode ( NEC690.47(A)), shall beprovided in accordancewith NEC250.50, 250.60, sizeper250.66and installed per250.64.
All PVsupport structures must be effectively grounded - this should be analyzed carefully, especiallyfor canopysystems. All connectionsmust beconductivesurface suchasgalvanized) to conductivesurfacematerialto beconsidereda path to POWER
ground. Abolted connectionbetweenagalvanizedpurlin anda painted or primed beam does not establish a ground path. Structural members that support any live parts must either have a path to ground via conductive surface to conductive surface connections or be grounded with a grounding lug and wire.
6. 2. f - Disconnecting Means
Provide Utility ACdisconnecting means per local Utility requirements and NEC requirements for location and distance.
o Mustbeonthe approvedUtility list, or meetthe utility minimum technical requirements and must ultimately be approved by the utility. o Meansshall be provided to disconnect all current carrying conductors of the PVSystemfrom all other conductorsin thefacility.
o Disconnecting means shall utilize appropriately sized and specified over - current protection, as well as ratings that meet minimum interrupt ratings per site conditions.
o Disconnecting means shall be pad lockable in both open and closed positions.
All DCconductors shall have disconnecting means per local AHJ requirements and N EC.
When multiple disconnecting means are provided for a single system; disconnects shall be grouped and labeled.
The disconnecting means shall be rated in accordance to690. 17.
Disconnecting means shall be provided to allow personnel to safely service fuses per NEC requirements.
6. 2.- - Interconnection
Provide detailed design showing method and location of interconnection to the facility.
Interconnection shall be made on the line side of all ground faultprotection equipment.
Service entrance conductors shall be sized for 125% of continuous loads per NEC 230. 42 and NEC220. 3.
Conductorsof size1/0or largerarepermitted to be run in parallel (NEC310.4), given conductors are the same length, same material, same size and insulation type, and terminated in the samemanner. Note NEC250.122(F) for parallelconductor sizing and routing requirements.
Comply with NEC705 for supply side interconnections.
The grounded conductor shall not be lessthan the minimum size as required by NEC 250.24, design grounding systems in accordance with NEC 250.24, section A)( 1) - ( A)( 5).
Comply with locally accepted version of the NEC. Load -Si deConnectiono Conformto AHJ/UtilityRequirements -including appropriateversion of NEC perAHJ. o
Confirmcompliancewith NEC705.12 Confirm
complianceto sumof over -currentdevices, per( B)( 2). Connection shall be madeat a dedicatedcircuit breaker or fusible
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disconnecting means, compliant with the switchgear manufacturer' s and interconnecting utility' s allowable hardware.
Identify any main breaker de -rates and means of de -rating, including anylocation requirementswhen requiredfor newbreakerinstallation.
Provide calculations showing capacity to de -rate main breaker when required.
Provide specifications for breaker compatible with existing switchgear, including design for in -rush current.
If utilizing the 120% of the rating of the busbar or conductor allowance, specify that the interconnection breaker will be located at the opposite end from the input feeder or main circuit location. In some cases where there is no opposite end, such as the case with branched or center fed bussing, this 120% allowance may not be utilized. Always consult with ForeFront Power if the bussing is complicated in anyway.
Breaker{shall have GFIprotection in accordance with NEC690.64(B)(3) Exception: Connection shall be permitted to be made to the load side of ground -fault protection, providedthat thereisground- fault protectionfor equipmentfromall ground -fault currentsources. o Sub -Panel connections will be reviewed on a case by case basis - all upstream coordination shall be performed.
Line - Side Connection
o Utilize existing holes in bus -bar- NOphysical modification of existing switchgear bus -bar is allowed unless approved by the switchgear manufacturer and can demonstrate that the UL listing is notimpacted. o All abovegradeconductorsbelow8' abovegradebetweenline -side connection point and first OCPDshall be contained in IMCor RMC. o Confirmappropriate conductor andover -current protection for PVsystem load and Facility equipment coordination.
o Use appropriate bolt/ washer/ nut assemblies for bus - bar terminations - Provide torque per device listings.
o Use UL listed crimp by Burndy or ILSCOrated for the system as designed and installed and in accordance with manufacturer' s approved crimping device only.
o Anybolted "pad to flat" electricalconnectionshould includea bolt, two flat washers, and the nut- If any flat components are aluminum, utilize a properly designed conical Belleville washer.
o Consult section NEC 230 for treatment of service entrance conductors. Special attention to NEC230.71 for limitations on number of existing" main breakers", and NEC 230. 46 which allows service - entrance conductors to be spliced or tapped in accordance with NEC 110. 14 and NEC300. o Note NEC220.5(B) which permits calculations to drop fractions if lessthan
0. 5 ampere.
o Design disconnecting means in compliance with NEC230.72(A) and 230. 70( A).
o Sizeover current protection per NEC230.90(A), 230.91, and NEC 240. 4( B, C) for allowable device ratings.
6. 1.h — Metering/ Monitoring
ForeFront Power will either ( i) provide the EDTor EPCContractor with a specification of a DASprovider along with required instrumentation, ( ii) will approve a specification submittal and list of instrumentation provided by the EPC Contractor. EPC Contractor will ensure that all relevant line diagrams and drawings are included in the engineered drawings.
ExternalDesignTeamor EPCContractorshall provideall other metering requirements per local utility and 120VACoutlet for service equipment.
Communication wire should be run directly from PVmeter to DASand shall not run through otherequipment.
Provide appropriate wire size to account for voltage drop for large distances or useof housekeepingtransformer at equipmentarea.
Meterpotential wiresshouldtypically be #12awgwith 2Afusing permeter install, use Milbank TS10- 0109 for typical applications.
o C.T. wires typically use #12 awg for short distances, if over 18', need to run 10 awg. Ferrules shall be used on CTwires to ensure proper connection.
Ion 8600 meter does not require 120V, these units are self -powered at 480Vfrom leads.
RS485 cable should be shielded and outdoor rated. DAS to Inverter connections should be fiber optic/ PE for large distances. Ferrules shall be used on RS485 wires to ensure proper connection.
Pyranometerandweatherstation shouldnot shadethe arrayor beshadedbythe array or any other obstruction during ALLdaylight hours.
UPSshould power DAS, PrimaryMeter, PrimaryWeatherstation, modem, switch, protective relayso ForeFrontPowercanestimatelost production if the grid fails and remotely reclosebreakersfor all projectsover 1MWac. Forall projects under 1MWac, a 120Vacoutlet shall be provided by contractor to power DASequipment.
No networking hardware should be connected to DASproduction network Ethernet/ Fiber TCP/IPwithout advance approval by ForeFront Power. If additional networking hardware is required i.e. IP camera / surveillance system / DVR. It should be on an isolated LAN from DAS networked components.
The project generation meter should be as close as is reasonably possible to the utility revenue meter'. In particular, the project gen meter should not be reading at LV or on the low sideof the step-upXFMRif the utility ismeteringat MVor on the high side of the XFM R.
MVrelaysand protectivedeviceswith control options shallemploy remotecontrol schemes so FFPis able to reset relays. SELrelays are preferred, when available.
6. 2. i — Labels & Markings
FOREFRONT
POWER
Providesystemlabelingand markingdetails asrequiredby codeor utilities for all DC equipment and Interconnection equipment ( POCC, AC/ DC Disconnects, Inverter, Disconnecting Combiner Boxes, etc.).
Labels and markings shall be etched placards, stickers notacceptable. o Comply to NEC690.7, 690.17, 690.53, 705.10, 690.54.
o All utility interactive system points of interconnection with other sources shall be marked at an accessible location at the disconnectingmeans. o A permanentplaqueor directoryshall be providedidentifying the location of the service disconnection means and PV System disconnection means. o Labelall wiring per NECrequiredcolor codingconfigurationsforDC/AC conductors.
All DC and AC equipment must have Arc Flash labels to meet NFPA70E standards, CSA Z462ElectricalSafetyStandards, local and national OSHAStandardsand per local, state, federal standards and regulations, whichever is the moststringent.
ForeFront Power name and logo is required on allplacards. EPC Contractor and ForeFront Power can discuss options during final design review.
Carportclearancewarning signageis requiredfor all arrayslocated in parking lots or structures. Signage is required at conspicuous locations at the lot or garage entrance and on low side of carport structure.
All canopiesin regionswith snow load greaterthan 0 PSFmust havewarning labels showing danger of falling snow/ ice.
ForeFront Power contact info labels to be located every 50' around perimeter fencing of ground mount arrays.
6.2 j - Wiring
WiringandWiringMethods" providedin E.100ElectricalNotesareprovidedfor guidance only.
Terminations shall use approved wiring types and connectors. o All terminations shall follow manufacturer spec torques. o All termination fasteners or mechanical lugs shall utilize torque marks after torquing to spec.
Straight above grade conduit runs, 100' or more, shall employ expansion fittings.
Use listed Bridgeport Rain Tight connectors or equivalent; seal all other electrical connections with climate resistant cau[king.
Show module source circuit groupings per disconnecting combiner box, label disconnectingcombiner boxesnumerically, in a logicalorder- showlocation of disconnecting combinerboxes.
Module connectors must use same manufacturer and model as the factory installed inter - module connectors.
o No connector shall be mated to a connector of a different brand unless approvedby both manufacturersin writing with accompanyinglisting documentation approving the mating pair.
o Factoryinstalled module connectorscannot be removed/replacedunless correcting defective connectors and approved by module manufacturer to maintain warranty.
FOREFRONT
POWER
o If module connectors are not compatible with equipment with built- in connectors ( micro -inverters, rapid shutdown, module level power electronics, combiner boxes, string inverters, etc.), jumpers must be utilized to mate connections.
Follow all manufacturer instructions for installation of wire connectors. o Useof manufacturerspecifictool is requiredunlessmanufacturerexplicitly allows use of other tools.
Wire connectors shall be installed to reasonably avoid possibility of pooled water.
Wire connectors shall not be installed in direct sunlight. Show on plans conduit routing for DCand ACconduits - Size and locate pull boxes in accordance with NEC 314. 28, 358. 26.
Direct burial of conductors is allowed provided all direct burial conductors are listed for such use and 1/ 0 AWG or larger.
Provideall construction details required for equipment grounding, including but not limited to: Modules, Racking, Conduit, Equipment enclosures, Inverters, Equipment Pad (Fence, Shadestructures), andFacilityinterconnection.
Provideconstruction details for conduit supporting methods, for rooftop, roof to ground transitions, and all ACconduitrouting.
Conduit on rooftop must be secured to sleepers/ strut and not make direct contact with the roof surface (except for conduit roof penetration, if applicable.
Useof PVCconduit on rooftop is prohibited.
All wiring exposed to direct sunlight must be covered in split -loom type protection, or equivalent. This applies to wiring spanning a gap longer than typical module -to - module gaps ( approx. I"). This applies regardless of wire sunlight rating.
Show on plans inverter location and installation details including:
o Equipmentorientation and requiredclearances, Invertergroundingdesign, DCConduit entry and routing.
Direct burial of conductors is allowable provided all direct burial conductors are listed for such use and 1/ 0 AWG or larger.
Conduitrouting shall not employtop -entry routingto newandexistingswitchboards, panels, inverters, or any other enclosure to the greatest extent possible for avoidance of moisture ingress.
o If top -entry must beemployed, the following stipulations apply:
Written consent from FFP in form of RFI response.
Use of sealed conduit fittings and Meyers Hub ( OAE) and all appropriate sealants.
Top conduit entry point must be positioned to avoid dripping on breakers, busbars, terminations, and anyother equipmentwithin enclosure.
Use of drip loops within enclosure to avoid potential moisture ingress onto contained equipment.
Weep holes (or equivalent) so moisture will not build up within an enclosure.
Show on plans location forAC Disconnects, metering, monitoring and any other
FOREFRONT
POWER
accessory ACequipment. Demonstrate mounting methods and conduitrouting.
Provide 1-line diagram or 3-line diagram including the following o All conductors sizes and types (including ground/ neutral), including sizing calculations.
Include reference temperatures forde- rating.
Reference NEC 2005 - 310. 10 FPN No. 2.
Reference NEC 2008- 310. 15( B)( 2)( c).
N Include NEC 690. 4( A)( 1) & ( 13)(1), NEC240.
Include NEC 690. 7 for multiple conductors.
Use750Cfor wire sizing when any terminal is rated for 75°C. 900C mayonly be usedwhen all terminals andfittings arerated90°C.
Use 690. 8( A)( 1) & ( B)(1) for all DCsizing for over current protection, equipment, and wire sizing.
Provide wiring schedule for all DCand ACsystems.
o All source circuits shall have individual source circuit protection. o Fuses and wires subject to transformer in -rush current shall be sized accordingly.
o Provide voltage drop calculations for DCand ACwiring including estimated distancesfor eachraceway. DCvoltagedrop should not pushvoltage below inverter MPPTwindow. ACvoltage drop should not push voltage below inverter' s ability to match gridvoltage.
All splices must be made in approved J-boxes, with an approved splicing method - i. e. connecting 2 different wire sizes together, that provides an irreversible means. Use Burndycrimp type compressionconnectorsuitablefor wire type and size, complyto NEC300.15. Lugtype connectionsfor conductorsplicesis not an approvedmethod.
All conduit shall be supported within 3' from enclosures and every 10' thereafter - there should not be more than total of 3600 of bends between pullpoints.
Specify RNC (PVC - NEC 352), schedule 40 for underground locations - comply with NEC300.5 for proper coverage.
Allconduit abovegrademust be metallic (EMT, IMC, RMC) with the exceptionof stub ups to equipment maximum 4' height.
Conduit shall be sized in accordance with NEC Annex C, with appropriate attention to conduit and conductor type matching.
Conduit bodies (LB, LL, LR, etc.) are allowable with the following stipulations:
o Conduit bodies must not contain sharp edges that can damage conductors.
o Conduit body volume and bend radii must be considered when sizing conduit bodies.
o Conductors must be properly secured to avoid excessive strain on conductors within the conduit body.
For Bi-Polar systems and pull sections, it may be possible to manufacture 1200volt differential between conductors, so Positive and Negative DC conductors in Bi- Polar systemsshallnevershareconduit, pull boxes, or anyenclosureunlessexplicitly listed to maintain a 600Vrating while doing so."
Protectstring wire whenjumping morethan 1" betweenadjacentmodules.
FOREFRONT
POWER
ForeFront Power encourages the use of aluminum conductors due to the cost benefit.
However, it is the responsibility of the design partner to engineer and design the system entirely and ensure proper design and installation of any material Use Schedule 80 conduit above ground for all underground to aboveground conduit transitions.
Canopy system conduit stub -ups shall be routed inside concrete foundation. If conduits or equipment is subject to vehicle damage, bollards or other approved methods of protection are required.
o Canopy system vertical conduits must be RMCup to 8' above grade.
Ferrulesor other listedconnectionsshallbeutilized for mechanicallyandelectrically joining metallic conduit sections. if such listed devices are not utilized, the conduit section maynot beusedasgroundingconductor.
Where cable tray is employed outdoors, the conductors must be listed for use in cable tray. The cable tray must utilize a ventilated cover or conductors contained in sunlight protection ( split loom, OAE).
6. 2. k — Mediurn Voltage
Transformers
o Comply with NEC450.3 for overcurrentprotection.
o Comply with NEC690.15for disconnecting means.
o Boltedto padand sealedif anygapsin the pad, verify transformer islevel. o Power cable and equipment grounding conductor installed in a mannerthat will allow for easy removal and standing off ofelbows.
o Tapeshieldadapter kits usedwith powercablethat hastapeshielding. o NEMAdrilled long barrel compression lugs used for low voltage wiring, low voltage wire routed to provide accessto oil drain valve and sampleport. o Specify use of lock or conical nuts.
o Non- magnetic hardware used for all current carryingconnections. o MV and LV conduits are separated and under their own compartment. o Appropriate sized gravel in the bottom of the Xfrmr pad window. o Providedangersignson doors, statementof voltage, power cableslabeled. o Provide surge arrestors to mitigate potential of any traveling wavecurrents. o Specify Penta-bolts on equipment enclosuredoors.
o Specify stainless steel hardware forconnections.
o MV transformers shall have low oil level and high temperature alarm contacts.
Systems with MVinterconnections shall meter production at the MV interconnection voltage.
Providedangersignson doorsof equipment, statementof voltage, with power cables and transformers labeled.
Dead break/ Load break elbows shall be specified copper type or approved equivalent.
Providecurrent limiting fuseson the HVsideof the transformer in serieswith Bay- 0- Net fuses or per transformer MFRdesigns/ recommendations.
Provide appropriate working space allowing for use of safety equipment to stand- off of elbows, ensuring enclosure doors will open to the fullest extent without obstruction.
FOREFRONT
POWER
MV conductors, when routed between Delta connections, should be rated for 173% insulation.
Confirmdesignallowsfor proper pulling tensionfor MVconductor for givendistance and degrees of turn. Provide transformer foundation design perapplicable codes and standards.
Providetransformer groundingdetails perapplicablecodesandstandards.
Provide conduit routes to pull transformer control and monitoring wiringas required.
The transformer shall be capable to provide monitoring points per systemoperator requirements ( see above for monitoring contact requirements).
Provide transformer electrical connection details including all cables, connectors, elbows, surge arrestors and all applicable fittings specifications.
Transformer impedance values shall be design to meet the system needs, consult system designer for appropriate transformerimpedance.
Determine transformer is capable to handle the system load flow and potential overloadconditionsthrough a professionalcalculationsand/or softwaremodel.
Providetransformer protection from overcurrentandother fault conditionsbased on circuit needs.
All equipment shall be tested to IEEE and ANSI/ NETA standards prior to acceptance and startup.SeeForeFrontPowerMVTestingdocument.
6. 2. 1— Electrical Requirements for Landfills
Usecabletray systemsfor DCwiring and runsfrom arraystoinverters.
ACrunsfrom invertersto substation/point of interconnectionarenormally direct burial or buried conduit, may be required to run through above -ground conduitdue to restrictions with cap penetration or settlement concerns.
ACequipment and associatedsupportingequipmentpadsshould beverified as within landfill cap weight requirements, if located on thecap. ' Electricalgroundingis astandarddesignconsiderationfor all PVsystems. In landfill applications, PVsystems should be grounded into the soil either in buffer areas or into the landfill capmaterial if it is determinedthat the material andthicknessof the capis sufficient to dissipate the electrical charge. If the PVsystem is grounded to the landfill cap, grounding, rodsshould not be installedvertically suchthat theypenetrate the landfill coverandprotrude into the wastematerial, asthis posesafire andexplosion hazard due to the presenceof landfill gas. Any protrusion through the landfill cap should be reviewed and approved by a licensed professionalengineer and the local jurisdiction.
6. 2. rn — Electrical Calculations
Showhow groundingdesignis relatedto soil electrical resistivity measuredin soil during geotechnicalinvestigation.
Showthat temp risedue to ohmic lossesfor any undergroundconductorswill not exceedtemperature rating of wire, and is betied to measuredthermal resistivity of soil in geotechnicalresults.
6. g Structural
Provide module racking specifications from manufacturer, materials list, and installation guidelines.
o All racking to have appropriate level of climateprotection. o Rackingshall be designedfor minimum30 yearlifetime. o
All dissimilarmetals should have measuresfor isolation, all fastenersshall be corrosion resistant appropriate for siteconditions. o
All connectionsshould have listedtorqueratings per devicelisting or engineered values. o
Structureshall allow for unrestrictedairflow tomodules. o Structureshall be ratedfor site specificwind speedand exposure. o Structureshall be designedto meetlocal snow or seismicconditions. o Module mountingmethod and rackingstructureshall complywith modulemanufacturer' s productrequirementsfor mountinghardware and locations. o Canopysystemslocated within 5. 0 milesof thecoastshall utilizehot dippedgalvanized finish for structuralsteel, unlessdirectedotherwise. Provide roof integrationdetails includingmeasuresfor ballastedsystems, or roofattachment locations and methods. Include any detailsfor roofingrequirements. It isthe ExternalDesign Team' s responsibilityto verifyroofingrequirements, and adherence to manufacturerguidelines for maintainingwarranties, for integrationof racking structures. Provide
ground foundationdetails and specificationsincluding measuresfor ballasting, concrete caissons, spread footings, or pilesas applicable. Include any measures required to mitigatecorrosion sources as identifiedin thesoils report, including ground water. Concretetype and anti -corrosioncoatings must be selectedusing soil corrosivitymeasurementsfrom geotechnicalinvestigation. Provide constructiondetail( s) forarraypiles, includingpile type, pile size, embedment depth, stick- up height, spacing, etc. Includepile layoutplan includingany specialspacingfor cornerzones, edge zones, and interiorzones ofarrays. Incorporate recommendationsprovided by Geotechnicalreport for designandsite work, ensuringthe StructuralFOR has includedsite specificdesign in conjunctionwith soils report. All
concretework shall providerequiredstrength (PSI), watercontent, and anyotherapplicable concrete mix specifications. All specialinspectionsrequired for slumpand concrete breaks will be adheredto andtest resultswill be providedto ForeFrontpower. o
Plans to indicateappropriatecuring time as it appliesto applicationand site specifics. o
Contractorto verifystrengthof concretethrough laboratorytesting. Show on plansstructuralroof membersand typicalsizes/ spacingforpositivelyattached structures or ballastedstructures. Provide
inverter equipmentpad constructiondetails including: o
Equipmentpad details -i. e. concretepad construction.
FOREFRONT
POWER
o Inverter mounting details.
o Shade structure is required for all exposed inverters unless written production guarantee is provided by the manufacturer.
o Fence and gate assemblies forsecurity/ safety.
o Skids.
Providefencingdetails andserviceaccesspathsfor ground mounted projectsas applicable.
All fabrication and manufacturingshall beperformedby certified individuals in approved assembly and fabrication shops.
Provideon plans, approvedlocationsandconditions for equipment storageon roof- top, verified by a licensedstructural engineerofrecord.
6. 3. a - Stl' U& Ural Cai. CULatioti Packages
Provide structural calculations package to include:
o Clearreferenceis providedto applicablecodes, standards, and anylocal ordinancesgoverningthe design (for example, 2012IBC, ASCE7-10, ADM1- 2010) AISI S110- 07/ S1- 09, AISC 360- 10, ACI 318- 11, etc.). o Summaryof all basicdesignloads (dead, wind, snow, seismic), with references to the specific sections of applicable codes and standards from which design loads are derived.
o For wind load, identification of design wind speed, Risk Category, ExposureCategory, magnitudeandsourceof wind pressure
coefficients, etc.
o If wind pressurecoefficientsarederived from wind tunnel testing, the wind tunnel test report must demonstrate conformance with ASCE 7 wind tunnel method (i.e. testing performedin aboundarylayerwindtunnel). o Summaryof combinationsof load, including identification of governingloadcombinations andfinal designwind loads (uplift, downforce, drag, moments).
o Calculations take into account.the specific project site and specific geometry of the system (i.e. tilt, row spacing, height, etc.). o Structural calculations for roof mounted systems should verify that existing structure can withstand weight of PV system and include calculation for roof attachment.
o Structural calculations for roof - mounted systems must demonstrate compliance with 2018/ 2021 IBC section 503. 4.
o Structural calculations from ground or canopy projects shall include calculationsfor the rackingsystemandfor piles/foundationsof racking system (must betied to geotechnicalresultsand piletesting resultswhen used).
o Structural calculations shall include module attachment ( required for canopy systems though this may not be part of the standard calculation package).
Section 7: Equipment Specifications
EQUIPMENT REGULATORY SPECIFICATIONS
U L 1703
IEC 61215 for Crystalline Meets site specific climate conditions i. e.
Modules IEC 61646 for Thin Film temperature, humidity, PSF NFPA 70- Class C Fire Utilizesrecognizedgrounding
NECincluding Series Fuse rating methods/ components( lay-in- lug) CECListed ( CAonly)
UL 1741
Outdoor rated - NEMA3R
Inverters IEEE 1547, 519
Meets site specific climate conditions
CECListed (CAonly)
DAS Monitoringconfigured
Inverter level combiner
NEMA 3R minimum, Steel
Ambient Temp - (- 20° C - 50° C)
Combiner Boxes UL1741 Standard Accessory 1000VDC rated components ( 1500 VDC rated where applicable).
Copper bussing, compression fittings or
mechanical lugs forterminations
DC Disconnects
All applicable NEC, UL, ANSI, and NEMA 3R minimum, Steel NEMA requirements UL Listed
All applicable NEC, UL, ANSI, and
208 - 600VAC as required
AC Disconnects
NEMA requirements
NEMA3R
Fusible, Visible, Lockable
Bolted construction
Outdoor NEMA 3R, finish coat ANSI # 61
Equipment bears the ULlabel
Copper bus bars
All applicable NEC, UL, ANSI, Silver plated connections Switchgear
NEMA, and Utility requirements Meets interrupting current ratings Underground cableentry
Ring type connection, 13jaw sockets
Ground Fault trip unit integrated switch,
open jaw verification window
120V receptacle provided
MeteringAll applicableNEC, UL, ANSI,
Utilize Ion 8600 - Form 9SMeter, or other as
NEMA, and Utility requirements approved by ForeFront Power Revenue Grade C. T.' s - Bar - type, unless
otherwise approved by ForeFront power
Provide 120VAC/ 2KVACPT
Monitoring Applicable NEC, UL, ANSI, NEMA DAS Only
Conduit
EMT UL 797, NFPA 70, ANSIC80. 3 Galvanized orequivalent IMC UL 1242, NFPA 70, ANSIC80. 6 Galvanized orequivalent RMC UL 6, NFPA 70, ANSI C80. 1 Galvanized orequivalent
Corrosion resistant
PVC UL 651, NFPA 70, NEMATC- 2 90° CRated
Schedule 40 or 80 asappropriate
Section 8: Glossary of Terms
The following terms and definitions are covered in this document:
TERM DEFINITION
AlternatingCurrentAC
AHJ Authority Having- lurisdiction
ALTA American Land Title Association
BOM Bill of Materials
BOS Balance of System
CAD Computer - Aided Design
CUR Covenants, Conditions, and Restrictions
CEC California EnergyCommission
CEQA California Environmental QualityAct
COGS Cost of Goods Sold
CPT Control PowerTransformer
CSA Canadian StandardsAssociation
CT CurrentTransformer
DAS Data Acquisition System
D& E Design and Engineering
DC Direct Current
DWG Drawing ( Standard AutoCAD File Extension)
ECO Engineering ChangeOrder
EMT Electrical MetallicTubing
FOR Engineer of Record
EPC Engineering, Procurement, Construction
ETL Electrical Testing Labs
FAA Federal Aviation Administration
GCR Ground Coverage Ratio
HVAC Heating, Ventilating, and AirConditioning
IAEI International Association of Electrical Inspectors IEEE Institute of Electrical and Electronics Engineers
ISC Short Circuit Current
TERM
L& M
DEFINITION
Labels and Markings
MPPT Max Power PointTracking
MSE Main Service Entrance
NEC National ElectricalCode
NEPA National Environmental PolicyAct
NREL National Renewable Energy Laboratory
NRTL Nationally Recognized TestingLaboratories
OCPD Over Current Protection Device
O& M Operation and Maintenance
OSHA Occupational Safety and Health Administration
PDF Portable Document Format ( Adobe° Acrobat®)
POCC Point of Common Coupling
PSI Pounds per Square Inch
PV Photovoltaic
ROW Right of Way
SLD Single Line Diagram
SOW Scope of Work
SPSA Solar Power Services Agreement
THHN Thermoplastic High Heat- resistantNylon- coated
THWN Thermoplastic High Water- resistantNylon- coated
TMY Typical MeteorologicalYear
UL Underwriters Laboratory
UPS Uninterruptible PowerSupply
USE Underground Service Entrance
USFWS U. S. Fish and WildlifeService
VmP Voltage Maximum Power
Voc Voltage Open Circuit
Our adjustable and durable frame features' lesshardware, integrated electrical"bonding, and included wire management resulting in reduced labor hours. Installation times are shortened by up to 36% through simplified connections, agile parts, and seasoned field teams. Foundationconsultationfrom anunbiasedpartner, basedon your uniqueproject site. Nomatter the terrain or weather, we'll providethe'rightsolution. Ourversatiledesignenablesnumerousconfigurationsallowingusto meetyour uniqueneeds. andbring solarto more -fields.
Portrait up to 3 high x 12 wide
Benefits
Less hardware for faster installation and reduced
labor hours
Simplified hardware featuring 2- piece bolt stacks and
only two types of hardware
Adapts to steep slopes
Foundations for any terrain
Included wire management
Specifications
Landscape up to d. high x o Mde
Bifacial compatible
Lighter, stiffer components for less freight costs
Versatile with numerous configurations
Durable, tolerating up to 170 MPH winds and 100 PSF
ground snow loads
Landscape orientation is bifacial compatible to maximize potential backside power yield
Module orientation Portrait or Landscape
Module mounting Bottom mount / Integrated electrical bonding Tilt angle 5°- 35°
Wire management Incorporated in structure - NEC compliant Configuration Portrait: up to 3 high x 12wide / Landscape: up to 4 high x 6 wide Slopes East or West facing, up to 30% / North or South facing, up to 36% Load capacities Project specific: up to 170 MPH wind speed and 100 PSF ground snow load Foundations Ground screws / Driven piles
Warranty — - — — — -- — 20 year limited warranty
Certifications UL2703, edition 1; CPP wind tunnel tested iimv. terrasnar-,-%- om4- i-.. • u. . 0
Q, PEAK DUO XL- G11S JIM
SERIES acells
585- 60OWp 1156Cells
21. 5% Maximum Module Efficiency
MODEL O, PEAK CAJO Aw(311S. ' SFG
ITBifacial
energy yield gain of up to 21%
Bifacial Q. ANTUM solar cells make efficient use of light shining on the module rear - side for radically improved LCOE.
Low electricity generation costs
Q. ANTUIM DUO technology with optimized module layout to boost module power and improve LCOE.
A reliable investment
Double glass module design enables extended lifetime with 12-year product warranty and improved 30- year performance warranty'.
Enduring high performance
Long- term yield security with Anti LID and Anti PID
ocells TechnologyZ, Hot -Spot Protect.
Frame for versatile mounting options
High- tech aluminum alloy frame protects from damage,
enables use of a wide range of mounting structures and is certified regarding IEC for high snow ( 5400Pa) and wind loads ( 2400Pa).
Innovative all- weather technology
Optimal yields, whatever the weather with
excellent low - light and temperature behavior.
See data sheet on rear for further information.
APT test conditions according to IEC/ TS 62804- 1:2015 method B I-150011, 168 h) including post treatment according to IEC 612154-1 Ed 2.0 (CD) The ideal solution for: °"^ '• wnvonea w
Ground - mounted
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PEAK DUO XL- G11S SERIES
Mechanical Specification
Format 96. 9in x 44. 6in x 1.38in ( including frame)
2462 mm x 1134 mm x 35 mm)
Weight 76. 9lbs( 34. 9kg)
Front Cover 0.08 in (2.0 mm) thermally pre -stressed glass w m' •_- qr* a, 9s osam-, `
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with anti -reflection technology
Back Cover 0.08 in (2.0 mm) semi -tempered glass m,
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Cell 6 x 26 mon, ocrystalline Q. ANTUM solar half cells El
3 esomn
Junction box 2. 09- 3 98 x 1.26- 2 36 x 0 59- 071 in ( 53- 101 mm x 32- 60 mm x 15- 18m1` 11). C, 3 x 1: ':" Protection class IP67, with bypass diodes
Cable 4mm2Solarcable; (+)>-29, 5in( 750mm),(-)>-13. 8in(350mm) Connector Staubli MC4. Staubli MC4- Evo2, - IP68 Electrical
Characteristics MINIMUM
PERFORMANCEAT STANDARDTEST CONDITIONS. STC' ( POWERTOLERANCE -5 W / -0 W) BSTC' BSTC' BSTC' BSTC' Power
at MPP' P1°.,, ( W] 585 639. 9 590 645. 4 595 650. 8 600 656. 3 Short Circuit Current' Isc [ A] 13. 72 15. 01 13. 74 15. 04 13. 77 15. 07 13. 80 15. 10 C E
OpenCircuitVoltage' V,, [
V] 53. 57 53. 76 53. 60 53. 79 53. 63 53. B2 53. 66 53. 85 Current at MPPI,,,., ( A] 13. 07 14. 30 13. 12 14. 36 13. 17 14. 41 13. 22 14. 46 Voltage at MPPV„ c, IV] 44. 75 44. 74 44. 96 44. 95 45. 18 45. 17 45. 39 45. 38 Efficiency' 1` 7 (%] 221. 0 z211 2! 213221. 5 Bifaciality
of P_ and 1, 70%±5° a • Bifacialitygiven for rearside irradiationon top of STC (front side) • Accordingto IEC60904-1- 2Measurement tolerances PI,,,, = 3 %; I, r, V, ±5 ° 5 atSTC: 1000 W/ m2, 'at BSTC: 1000 W1m2 * cD x 135W/m2. (= 70%± 5g5, 25± 2' C. AM1. 5 accordingto IEC60904-3 MINIMUM PERFORMANCEAT NORMALOPERATING CONDITIONS, NMOT2 Power
at MPPP,[ NJ] 440. 5 444, 2 449. 0 451. 8 E
Short Circuit Current I, c [A] 11. 05 11. 07 11. 09 11. 11E OpenCircuit VoltageV_ [ V] S0. 67 50. 69 50. 72 50. 75 c- - - - ---- --- -- - --- -- -- ----- - - -- ---- -- . - - - 5 i
Current at MPPIi [ A] 10. 30 10. 34 10. 38 10. 42 Voltage at MPP - - - - -- V, ec, [
V] - - - 42. 79 --- -- 42. 97 - - -- - - 43. 15 - - -- - - - 43. 34 -. Measurement tolerances P,,,,. ± 3 %, 1,; V x =5 % at STC. 1000W/m2, 25± 2 ° C, AM1. 5accordingto IEC60904-3 • 2800W/ mz, NMOT, spectrumAM 1. 5acells PERFORMANCEWARRANTY PERFORMANCE AT LOWIRRADIANCEpg
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for SystemDesign Maximum
System Voltage Vsys V1 1500 PV moduleclassification Class II Maximum Series Fuse RatingA DC] 30 Fire Ratingbased on ANSI/UL 61730TYPE 29' Max.
Design Load, Push/ Pull' Ibs/ 112) 75 ( 3600Palir33 ( 1600Pa) PermittedModule Temperature 40' F up to+185'F Max. Test Load, Push/ Pull' lbs/ ft2) 113 (5400Pa)/50 ( 240OPa) on Continuous Duty40' C up to +85' C) 3 See InstallationManualNew Type is similar to Type 3 but withmetallicframe Qualificationsand Certificates UL 61730.
CE- compliant, 1 IEC 61215:
2016, IEC 6
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Qcelis SalesRepresentativefor details regardingthe module' s eligibilitytobe BuyAmericanAct (BAA) compliant. I-• w--'-• Qcellspursues minimizingpaper output in considerationof the globalenvironment. tdote Installation instructionsnc ha
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followedContactour technical servicefor funkier informavonon aoproved instailabgnof this productI I H-I400
Sprum ectCenterDrive. Suae 1400, Irvine. CA 92618. USA i TEL • 1 949 748 5996 1 EMAILhquwnquiryagcellscom I WEBgcells coin ce
SUNSYS HES V
Modular outdoor Energy Storage System
from 50 WA / 186 kWh to 550 WA / 1116 kWh systems
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SUNSYS HES L is an outdoor system that merges proven individual technologies to create a more efficient all -in -one solution. Partnering with CATL, Socomec has selected the EnerOne liquid cooled LFP battery system as the optimum battery for SUNSYS Hybrid Energy Storage.
SUNSYS HES L meets the most stringent safety standards.
The range is available in a variety of sizes and can work both as grid follower and grid -former.
Safety certified
The system combines 2 top quality
components to deliver a winning formula.
CATL EnerOne Liquid - Cooled Battery:
the SUNSYS B- Cab L uses stable Lithium
Iron Phosphate (LFP) battery chemistry. The
battery has passed the large-scale fire test
UL9540A.
Socomec Power Conversion System ( PCs):
the SUNSYS C- Cab L uses a safe conversion
technology to limit the common mode noise effect.
SUNSYS HES L is compliant with UL9540- 2020:
the latest and most stringent safety standard
for Energy Storage Systems, in both Canada
and the USA.
Extreme flexibility
The SUNSYS HES L system is based on
2 standard cabinets — C- Cab and B- Cab —
that can be combined to make dozens of
certified combinations.
In addition, the installation can be upgraded with:
increased power with the addition of one or
more 50 kVA power modules in the C- Cab
or even additional C- Cabs,
increased energy with the additionof B-Cabs.
Fast and error - free installation
Battery cabinets are shipped completely
assembled with internal modules mounted —
for maximum quality with the minimum
transportation costs and installation time.
Also, for an error -free installation:
drilling plates are provided to prepare the
locations of the drillings,
the intelligence ( PMS, BMS & EMS) is
integrated inside the C- Cab to reduce
complexity,
DC connecting kits are available to
simplify the connection between the
converters and batteries.
Easy maintenance
Reduced maintenance with HVAC replaced
by air filters that can easily be maintained by
the customer.
Seamless service during maintenance
as one C- Cab L module can be changed
without interruption whilst keeping the others
operational.
Furthermore, one battery rack can be
disconnected for module replacement
keeping the others operational.
Commercial and industrial
buildings
EV charging infrastructure
Isolated microgrids
Resilient microgrids
Renewable energy integration:
Solar and Storage
1. ' > Safety certified
i > Extreme flexibility
Fast and error -. free installation
Easy maintenance
Maximum savings and fast ROI
Safety: UL 9540- 2020;
UL 9540A
EMC: FCC part 15 Level A
Environment: RoHS; REACH
Communication protocol:
Modbus TCP; SunSpec 2. 0
Grid code: UL 1741 SA/ SIB;
UL 1741 ORD; IEEE 1547-
2018; IEEE 1547. 1- 2020; CA
Rule 21
MET
C. us
Please consult us for additional ones.
Mufti- MWh systems
For larger installations,
please consider our larger
energy storage range,
j SUNSYS HES XL range
Socomec Expert Services teams in North America provide:
Extended warranties, for up to 20 Years / -
Scheduled preventive maintenance for warranty compliance is On -site startup and commissioning, '
Promptserviceresponseintheunlikely event unscheduledservicemay be required „ Catalogue m socomec
Innovative Power Solutions
SUNSYS HES L°
Modular outdoor Energy Storage System
from 50 kVA / 186 kWh to 550 kVA / 1116 kWh systems
Energy toolbase EMS
Integrated inside our C-Cab, this intelligent EMS will manage your system to enable maximized savings.
This Energy Management System includes:
Acumen EMS: controls software that forecasts and optimally discharge the ESS in the field.
ETB Monitor: a monitoring software providing real-time insights into the operational performance and savings of your system.
Who is Energy Toolbase?
ETB is backed by Pason Systems, a highly reputable, bankable, 40 year -old company.
Their team and suite of products takes you through every step of a project' s lifecycle — from project conception to end of life msocomec Catalogue
Innovative Power Solutions
SUNSYS HES V
Modular outdoor Energy Storage System
from 50 kVA / 186 kWh to 550 kVA / 1116 kWh systems
modular units _ for maximum flexibility
R3ET79' 1 =
A'' l7Y' 1
e bae ' _
0 Upto 1005kg / 2216Ibs 2280kg / 5027Ibs
Bidirectional power converter Lithium ion battery
50 to 300 kVA / cabinet LFP technology
iAutomation functions 186 kWh / rack
AC/ DC distribution and protection Liquid cooling thermal management Battery management system i > Integrated fire safety, detection and extinction system Integrated EMS
IoT Ready.
I
M_anystem configurations are available_ to meet customer_ requirements Energy ( kWh)
1 B- Cab 2 B- Cab 3 B- Cab 4 B- Cab 5 B- Cab I 6 B- Cab Power( kVA) I 186 372
9 558 744 1 930 1116
50 ! -
100
150
200 -------- L, _
250
300 l _
350
400
450 = —
500 - --- —.
550
Popular Configurations, featured In ETB Developer. Available configurations Catalogue m socomec
Innovative Power Solutions
SUNSYS HES V
Modular outdoor Energy Storage System
from 50 kVA / 186 kWh to 550 kVA / 1116 kWh systems
System information
P Powermodularity 50kVApowermodules - upto300kVApercabinet Symmetric --cal overload'
i
110% during3omin -125°% during10min -150°% during30s
l Cemistry I _ _ LFP- Lit_hiumIronPhosphate
EnergyNameplate 186kWhpercabinet
AC/AGMaxBoundTripEfficiency 90°%
Maximum C-rate 0.6 C _
j ftdmumDCcurrent 82Acharging / 87Adischargingper50kVApowermodule Powerrating 50 kW 1— 100 kW I 150 kW 1_ 200 kW 250 kW I 300 kW f ACratedcurrent 60A 120 A — 1 1 00A _ 241 A I 3 11A 3 11A _ SACmax: temporarycurrent (overload) 90 A l _ 18OA + 1 2 11A 3 11A __ F 51 A _ 541 A AC, ACcow I Upto4x95mm2/3/0AWG - 3x 150mmz13O01VICM,- 2x185mm2/35OMCM Rated voltage (U!)) I 480 Vac (3ph+ N) ± 2O%
I Ratedfrequency 60 Hz ±5°%
Fire tecc n I FireSafff—y§y—stemIncludingsmokedetectors, heatdetectorsandaerosol Environment
Degreeofprotection IP_55 / NEMA 3R{ Outdoor) _
Operation temperature I - 20to +45C° / -4to +113°Fwithoutderating j` Storagetemperature _ I _- 20to+ 60C°/- 4to+ 140°F
i Awusticlevelat1m _ < 64. 8 dB
Maximum attitude 1000m13280ft withoutderating (consultusfor requirementsabovethis) .,_._ Two sy"stem installation optioisYacc® rding';to "fhespace_ available On- line installation
Up to 6 B-Cabs - dimensions (mm/ in)
Back- to- back installation `
Up to 6 B-Cabs - dimensions (mm/ in)
m soeomec Catalogue
Innovative Power Solutions