Section_26_3100_PV_Array.pdf

OANG 180th Fighter Wing - Swanton, Ohio URS

WYTD 079032 - Construct ACA Alert Crew Quarters Facility URS Project No. 14578137

20 March 2015 Type B Services - B3 Submission

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SECTION 26 3100

PHOTOVOLTAIC / GRID TIE INVERTER SYSTEM

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary

Conditions and Division 01 Specification Sections, apply to this Section.

1.2 SCOPE OF WORK

A. This system shall be considered an Option Bid Item (OBI) and may be elected to be installed by the Government or not installed. Provide separate line item in bid submittal.

B. Provide a complete photovoltaic system (PV) with a utility grid tie inverter to provide energy generation as shown on the drawings and specified herein.

C. If OBI is selected to be provided, coordinate with Contracting Officer for site PV system installation location.

1.3 SYSTEM OVERVIEW

A. General Project Requirements

1. The following outlines general requirements of bidders for these projects. Additional details are provided throughout this document.

2. Provide and install complete photovoltaic (PV, solar electric) power system.

3. Verify layout and location of the system.

4. Deliver, assemble and install the equipment.

5. Conduct acceptance testing of complete PV system and a minimum of four hour training on the operation and maintenance of the system

6. Provide required documentation and system manual (System Design Review and

Approval required (see below)).

B. Manufacturer: Provide a PV System as supplied by Redhawk Energy Systems, the basis of design, or an approved equal. Products must comply with the Buy American Act.

C. System Operation

1. The system shall feed utility-grade power of 14KW at 208 VAC, 3 phase into the facility’s electrical distribution network. In this configuration, the photovoltaic (PV) system operates in parallel with the utility to provide solar power to the facility during daylight hours. This is a grid-interactive system; utility power is required for system operation and there is no storage capacity.

2. The system operation is completely automatic. The inverter control system will monitor and match utility voltage, frequency and phase angles and deliver current as sunlight is available. Upon detection of abnormal conditions such as over/under frequency or over/under voltage, or loss of power, the inverter disconnects itself from the utility grid and goes into a standby mode, awaiting restoration of normal utility conditions.

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3. System Electrical Configuration and Power Rating

a. DC Power Rating: 15.8 KW-DC, 600 VDC maximum and 380 VDC nominal.

b. AC Power Rating: 14.0 KW-AC Minimum, 208 VAC, 3 phase.

4. Electric Power Requirements

a. Power provided must be compatible with the on-site distribution system.

b. The System must include all the hardware needed for the solar PV.

c. All systems must be installed in accordance with all applicable requirements of local electrical codes and the National Electrical Code (NEC), including, but not limited to Article 690, “Solar Photovoltaic Systems” and Article 705, “Interconnected Electrical Power Production Sources”.

d. Systems must be designed and installed using U.L. or ETL listed components.

5. Other Requirements

a. The photovoltaic modules shall include current limiting fuses to provide protection of the modules.

b. The photovoltaic system shall include lightning and surge protection to protect the arrays and to meet NEC requirements.

c. System shall be so designed to allow for easy replacement or removal of solar cells.

d. Provide combiner boxes that allow for easy installation of the solar cells.

e. Provide a ground mounted mounting system that properly supports the panels, and also provides the required tilt angle to capture the maximum sunlight during the winter months.

f. All Balance of Systems (wiring, component wiring, conduits and connections) must be suited for conditions for which they are to be installed. The inverter shall be located outside in a minimum NEMA 3R enclosure.

1.4 QUALITY ASSURANCE

A. Contractor shall be a company with at least 5 years of successful installation experience with photovoltaic system work similar to that required for this project.

1. Proof of employment and work force manpower information shall be identified in the weekly/bi-weekly construction job meetings.

2. Should the construction of the photovoltaic fail to keep pace with the project schedule, the contractor shall increase manpower or offer an alternate resolution to place the progress back on schedule.

B. Contractor shall provide with bid a minimum of 3 reference accounts at which similar work, both in scope and design, have been completed by this Contractor within the last 3 years.

C. Contractor shall be knowledgeable in local, state, and national codes and regulations.

1. All work shall comply with the latest revision of the codes or regulations.

2. When conflict exists between local or national codes or regulations, the most stringent codes or regulations shall be followed.

3. All installations shall comply with NFPA 70.

D. Single-Source Responsibility: The photovoltaic system shall be provided from a single source that assumes responsibility for compatibility of the system components and warranties the system for the specified warranty period.

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E. Installer Qualifications:

1. Proof of certification from the manufacturer of the photovoltaic system stating that the installer has experience and/or training necessary to install the system properly is required.

2. Proof of certification from North American Board of Certified Energy Practitioners

(NABCEP), the Great Lakes Renewable Energy Association (GLREA), or the Solar

Energy Industries Association (SEIA) is required.

F. Comply with the following standards:

1. AMSE PTC 50 (solar PV performance).

2. ANSI Z21.83 (solar PV performance and safety).

3. NFPA 853 (solar PVs near buildings).

4. NFPA 70 (electrical components).

5. IEEE 1547 (interconnections).

6. National Electrical Safety Code – ANSI C2-1999.

7. All applicable Federal, State, and Local Building Codes and requirements.

8. Customer Guide for the Interconnection of Distributed Resources to the American

Electric Power (AEP) Distributive System.

G. Inverter shall comply with the following requirements:

1. IEEE 929-2000, “Recommended Practice for Utility Interface of Photovoltaic Systems”.

2. UL 1741, “Standard for Static Inverters and Charge Controllers for Use in Photovoltaic

Systems” (IEEE1547).

H. Modules must be certified to UL 1703, “Flat-Plate Photovoltaic Modules and Panels”.

1.5 SUBMITTALS

A. Submit product data for each proposed system component specified, including scaled dimensioned drawings of components, fabrication materials, component features, mounting provisions, administrative provisions, accessories, and installation instructions.

B. Submit shop drawings showing detailed drawings (elevations) of modules, strings, and mounting apparatus and hardware.

C. Complete parts lists and specifications for the overall system and individual components, including all electrical components, mechanical hardware, and other equipment required for installing the system.

D. Diagram indicating overall layout of the entire system, including PV array and location of the inverter with respect to the array and building facilities.

E. Electrical schematics and diagrams showing all major components and devices, including conductor types and sizes, connections of individual modules and array source circuits, inverters, terminations at junction boxes and connections to the customer’s electric service and utility grid.

F. Mechanical drawings showing details of module/array mechanical support structure and instructions for assembling/disassembling and installing arrays on rooftops or the ground as required.

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G. Complete assembly and installation instructions for mounting array, junction boxes and enclosures, routing conduit, wiring arrays and terminating conductors at array, combiner boxes and inverter system.

H. Submit all testing parameters and cut sheets of proposed testing equipment to insure compliance with specifications prior to testing.

1. Submit a sample of the test reports to insure all testing parameters are properly represented and legible.

I. Submit the manufacturer’s material certification.

1.6 O & M MANUAL

A. Items to be included in the Operation and Maintenance Manuals, due at completion of installation:

1. One copy of each approved submittal.

2. Three sets of record drawings of the actual installation of the photovoltaic system.

a. Drawings shall be included in same size format as contract documents and on a CD diskette in AutoCAD 2005 format.

3. Overview of major system components, principles of operation and safety considerations.

4. Complete parts lists and specifications for the overall system and individual components, including all electrical components, mechanical hardware and other equipment required for installing the system.

5. Procedures for operating, disconnecting, servicing and maintaining complete system and individual components.

6. Manufacturer’s Warranty Certificate.

7. Warranty contacts, including but not limited to: names, phone numbers – both office and cell.

1.7 JOB CONDITIONS

A. Examine areas and conditions under which the structured cabling system components are to be installed, and the substrate that will support the equipment. Notify Engineer in writing of conditions detrimental to proper completion of the Work. Do not proceed with the Work until unsatisfactory conditions have been corrected in a manner acceptable to the Engineer.

1.8 WARRANTY

A. Provide a one year full manufacturer’s warranty and parts and labor for the entire PV system.

PART 2 - PRODUCTS

2.1 PHOTOVOLTAIC (SOLAR) MODULES

A. Provide necessary panels arranged in a series and parallel configuration as required by the grid tie inverter to supply adequate D.C. input power to produce a minimum of 14,000 watts of A.C.

power.

B. Modules to be UL-1703 listed.

C. Minimum module efficiency shall be 16.4%.

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D. Modules to consist of single crystalline silicon surrounded by ultra-thin amorphous silicon layers.

E. Provide each module with a bypass diode.

F. Minimum design life of 20 years.

G. Manufacturers:

1. Basis of Design: 190W modules manufactured by Sanyo/SunWize, model HIT Power

190.

2. Mitsubishi.

3. Sharp.

2.2 SOLAR MOUNTING SYSTEM

A. Provide ground-mounted grid support structure to hold the PV modules. Height of module/grid system is to be limited to a maximum of 60 inches from the ground. Bottom modules shall be a minimum of 12 inches off the ground to provide clearance for snow and debris.

B. Mounting structure to be made of all aluminum construction and stainless steel fasteners.

C. Structure to be compatible for all major brands of solar panels.

D. Mounting system to have provisions for the following tilt angles in 5 deg increments from 10 deg to 55 deg. Panels can also be mounted flat, if desired.

E. Mounting structures to be warranted for a minimum of 15 years.

F. Support structure shall be designed to withstand 90 MPH winds with no damage to the panels or mounting structure.

G. Mount PV modules to grid support from structure with a grounding clip to effectively ground

PV system components, including module frames, mounting rails and ground mount supports.

Supply junction box on side of support frame.

2.3 COMBINER BOX

A. Provide a PV combiner box(es) suitable for outdoor mounting and rated NEMA 3R minimum.

Combiner box will be used for combining the outputs from the solar arrays. Provide suitable fuse inputs for each array.

1. All aluminum powder coated housing: light gray.

2. Flip up cover that can stay in the open position during installation.

3. PV negative bus bar.

4. Chassis ground bus bar.

5. Knock outs for PV in and PV out on bottom and sides.

2.4 GRID TIE INVERTER

A. Supply a grid tie inverter to provide a minimum of 14.0 KW AC power at 208V/3 phase.

B. Input power to be rated 600 VDC maximum and 380 VDC nominal.

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C. Output power to be rated 208 VAC, 3 phase power.

D. Inverter shall be UL listed to UL 1741 Rev 2005.

E. Inverter to be suitable to interconnecting to the local utility.

F. Inverter to be compatible with the solar panel arrays in terms of voltage and capacity to provide the designed output power.

G. The inverter shall be installed as a permanently grounded electrical system per the NEC

ANSI/NFPA 70, as well as all state and local code requirements.

H. Inverter shall be DSP-controlled PV inverters for grid connected commercial, industrial and utility 3-phase PV systems. The inverter shall have a space vector PWM, a precision MPT algorithm, and low-loss ICBTs. Inverter efficiency shall have a minimum of 95.8%.

I. Inverter shall have the following features and output parameters:

1. Fully integrated design includes transformer, filters, A.C. & D.C. disconnects, D.C.

combiner-fuses

2. Premium overall efficiency

3. Simple set-up and connections (Connect D.C. from PV strings and 3-phase A.C.

connections)

4. Precision DSP-controlled Maximum Power Tracking Algorithm

5. High-reliability design, based on 20 years of power electronics products, includes sealed power and signal control electronics, high-efficiency magnetics

6. No night-time standby losses

7. 6-7 fuse PV combiner in D.C. disconnect

8. “Blizzard-Proof”, gasketed disconnects, recommended for roof-top or other severe locations

9. Positive grounding version

J. Connectivity

1. RS232 port and software for diagnostics and data capture with PC

2. RS485 port for communication with multiple inverters in larger system and long communications lines

3. SolrenView or Fat Spaniel Inverter-Direct Internet, and/or revenue-grade monitoring options available. Also compatible with Energy/Recommerce, Draker and others.

K. Safety Features

1. Electronic temperature protection, intelligent cooling

2. D.C. ground-fault detection and interrupt

3. Current and voltage limit protections

4. Standards-compliance: Listed to UL 1741 (IEEE Std. 1547) and tested to NY SIR Surge

Test Requirements (IEEE 62.41). Listed on CEC’s eligible equipment list.

L. Protection

1. AC Grid-Connection.

2. AC Disconnect (Integral).

3. DC Combiner-Fuse Enclosure.

4. DC Disconnect (Integral).

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M. Inverter to be a manufactured by Solectria, model PVI-14TL or approved equal.

PART 3 - EXECUTION

3.1 INSTALLATION

A. Contractor shall be responsible for installing solar support structure, solar modules and all associated equipment in accordance with the manufacturer’s specifications.

B. Installation shall be per NEC requirements.

C. Contractor to be responsible for wiring as indicated on the drawings in accordance with manufacturer’s specifications and all local codes.

D. All wiring for PV system shall be installed in conduit.

3.2 TRAINING

A. Manufacturer’s representative shall provide up to 4 hours of training for the operation and maintenance of the PV system with owner personnel.

B. Training shall be scheduled at least 14 calendar days in advance.

END OF SECTION 26 3100

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