Attachment_01_-_SMI_Inverter_Specs_-_Scope_of_Work.doc

ATTACHMENT 01

TECHNICAL SPECIFICATIONS FOR REPLACEMENT OF INVERTER FOR SOUTH MANITOU ISLAND

SLEEPING BEAR DUNES NATIONAL LAKESHORE

EMPIRE, MICHIGAN

INDEX

SECTION 1.1- SUMMARY OF WORK

1.1.1 Description of Work

1.1.2 Location

1.1.3 Site Visit

1.1.4 Working Hours

1.1.5 Transportation and Housing

1.1.6 Pre-construction Conference

1.1.7 Completion

1.1.8 Quality Assurance

SECTION 2.1- GENERAL

2.1.1 General

2.1.2 AC Power Supplied from Inverter Operation 2.1.3 Battery Bank and Charging

2.1.4 Diesel Generators

2.1.5 System Protection

2.1.6 Front Panel Controls, Metering, Display

2.1.7 Data Management 2.1.8 Options

SECTION 3.1- CLOSEOUT

3.1.1 Basis of Payment

3.1.2 Final Inspection and Acceptance of Work

3.1.3 Guarantee

TECHNICAL SPECIFICATIONS FOR REPLACEMENT OF INVERTER FOR SOUTH MANITOU ISLAND

SLEEPING BEAR DUNES NATIONAL LAKESHORE

EMPIRE, MICHIGAN

SECTION 1.1

SUMMARY OF WORK

1.1.1 DESCRIPTION OF WORK:

A. The Contractor shall provide all labor, tools, materials, and equipment necessary to replace the Inverter/Charger on South Manitou Island at Sleeping Bear Dunes National Lakeshore.

1.1.2 LOCATION: The work is located on South Manitou Island at Sleeping Bear Dunes National Lakeshore, Leland Michigan.

1.1.3 SITE VISIT: CALL Dennis Steele at (231) 326-4835 to make arrangements to see the unit on the island. Manitou Transit phone number is 231-256-9061 for reservations and directions to the marina. Bidders are encouraged to have examined the site and satisfied him/herself as to the existing conditions under which he/she will be pledged to operate or that in any manner might affect the work under this contract. Private boats may be used to attend the meeting. The park dock on South Manitou Island has a 30 minute mooring limit.

1.1.4 WORKING HOURS: the work shall not be performed on weekends or holidays, or before 8:00am or after 4:30pm, unless prior arrangements are made with the Contract Specialist (CS) Contracting Officer (CO).

1.1.5 TRANSPORTATION AND HOUSING: The Park will provide housing during the contract period. The park housing is a fully furnished house with the following amenities; bath, kitchen, (stove, microwave, refrigerator, table, chairs, utensils), living room (furniture), bedrooms (bed, dresser). The items not furnished are bedding (sheets, pillow, and blankets) and food. There are no restaurants or stores on the Islands, so all food must be transported. The park is not responsible for any moving of materials and tools from delivery trucks to the docks or transportation, contractor employees and contractors. It is the contractor’s responsibility to make arrangements for all transportation to and from the island for employees, materials and the removal of all debris. For transportation to the island it is recommended to use the Manitou Transit out of the Leland Harbor, phone number is 231-256-9061. The use of a privately owned boat is allowed; however it is not allowed to remain moored up to the park dock for more than 30 minutes. If it is used to transport materials contact the Contracting Officer’s Representative (COR) to arrange for longer mooring time at the Park dock for offloading. The COR will be appointed at contract award.

1.1.6 PRECONSTRUCTION CONFERENCE: Prior to beginning work, the Contract Specialist (CS) or Contracting Officer (CO) will arrange a meeting with the Contractor to discuss the work in general. This discussion shall include administrative matters, National Park Service policy and regulations, safety and accident prevention, questions the Contractor may have, and points that need to be resolved before the work commences. At this conference, the Contractor shall furnish the Contracting Officer with a plan of operation indicating date and information for moving and handling of materials. The Contractor shall secure approval of the plan and not deviate without the permission of the Contracting Officer.

1.1.7 COMPLETION: All work shall be completed to the satisfaction of the Contracting Officer in accordance with the specifications within 60 calendar days from receipt of Notice to Proceed.

1.1.8 QUALITY ASSURANCE: All work shall be accomplished in accordance with the manufacturer’s recommendation and subject to the approval of the Contracting

Officer Representative.

SECTION 2.1 GENERAL

2.1.1 General:

New bimodal inverter is required to replace the existing 20 kVA inverter/charger on

South Manitou Island, Sleeping Bear Dunes National Lakeshore in summer of 2015. The primary functions of the replacement inverter/charger shall be to reliably:

1. In normal stand-alone mode, provide full rated power from existing 120 Vdc battery banks

2. Provide battery bank charging from the existing PV array

3. When dc power is insufficient, automatically provide full power from one of two existing diesel generators (without inverter operation)

4. When more power is needed above setpoint-established inverter capacity, automatically start and operate inverter in parallel mode with one of two diesel generators

5. Charge battery banks when needed from one of two diesel generators

6. Permit remote system control and data acquisition

Existing battery bank: four strings, each of 60 AGM lead-acid cells of 1000 Ah rating

Existing PV array: 30 strings of 4 Sanyo 210N PV modules, each string Imp = 5.1A, Voc= 204 V@25C

Both existing diesel generators: rated 40 kVA continuous, 120/208 V 3-phase, 60 Hz

Load: 120 V (4-wire) site distribution to multiple buildings and a 240 V 3-phase pump

Ambient temperature: +5 to 35C during operating season, -30 to +30C during late fall, winter, early spring

Ambient humidity: 90% max, non-condensing

Inverter to comply with IEEE Standard 1547, USA FCC Part 15-B

The inverter will be sheltered from weather and mounted on a concrete slab floor 2.1.2 AC Power Supplied to Loads from Inverter Operation:

Nominal output voltage: 120/208 V 3-phase, 4-wire

Power rating: 25 kVA continuous with balanced load; 35 kVA minimum for balanced surge load <30 s

Inverter output voltage regulated within ±1.5% in stand-alone inverter mode

Inverter output voltage in parallel with generator to follow generator voltage within ± 10% of setpoint

Stand-alone inverter frequency: 60 Hz ±0.5%

Inverter frequency in parallel operation to follow generator frequency (within 57 - 63 Hz)

Inverter waveform: sinewave, <5% total harmonic distortion

Inverter efficiency: 90% at ~50% rated load

2.1.3 Battery bank and Charging:

Nominal battery bank voltage: 120 Vdc

Solar charging: 160 A maximum PV array current

Solar array voltage range: 150 - 225 V

Solar array charge control: MPPT, 150 - 225 V operating range

Solar array charge set point range: Bulk charging 135 - 150 V ; float voltage 125 - 140 V

Generator charge set point range: Bulk charging 135 - 150 V; float voltage 125 - 140 V

Generator charge set point range: 0 - 200 A

Battery bank temperature compensation: 5 - 35C

2.1.4 Diesel Generators:

Nominal voltage: 120/208 V 3-phase, 4-wire

Frequency: 57 - 63 Hz

Rated Capacity: 40 kVA

Auto start: low battery bank voltage, excessive load for inverter-only operation

Start/stop control: Voltage-free contacts

Generator selection: manual or automatic

Setpoint control of generator warm-up, cool-down periods: 5 - 300 seconds 2.1.5 System Protection:

Circuit breakers: solar input, battery input, generators (2)

Inverter continuous overload

Inverter peak current

Heatsink over-temperature

Over/under battery voltage

Over/under AC voltage

Over/under generator frequency

PV ground fault detection 2.1.6 Front Panel Controls, Metering, Display:

Discrete manual controls: emergency stop switch, generator bypass switch

Analog metering: battery voltage, battery bank current, solar array current

Keypad controls:

Auto-mode selections - force start generators

Manual mode - inverter, Gen A, Gen B

Setpoints (password protected)

Real time digital data display:

Generator, inverter status

Output voltage, power, power factor, frequency

Battery voltage, current, inverter input dc current, temperature

Solar charge current, ambient temperature

Heatsink, enclosure temperature

System setpoints

2.1.7 Data Management:

Computer port: Isolated RS232 port

Computer access: LAN/internet

Adjustable logging rate: 1.0 second to 15 minutes

Data storage capacity: 120 days with 5-minute logs

Time, date stamped log entries

Time, date annotated fault log, holding fault description and operating statistics

View, change system setpoints remotely

Bulk log download

Data available for display on front panel digital display:

Inverter input, output kWh summation

Solar array kWh summation

Battery input, output kWh summation

Generators A and B kWh summations

Generators A and B run-time summations

Site kWh summation 2.1.8 Options:

System Spares:

A kit of significant spare replaceable components shall be provided, including IGBT devices, any fuses, and one of each type of circuit board installed.

System Software:

Installation of system control setpoints, determined upon consultation with SLBE

Inverter/charger system shall be commissioned demonstrating all major functions, including control of system by an external computer.

Two hard copies and one digital copy shall be supplied of complete system installation, operation, and maintenance manuals and related drawings.

Training shall be provided in system operation and routine maintenance to five or less persons selected by SLBE.

SECTION 3.1

CLOSE-OUT

3.1.1

BASIS OF PAYMENT:

A. Payment will be based on completed work performed in strict compliance with the specifications and shall constitute full compensation for all work completed and accepted.

3.1.2

FINAL INSPECTION AND ACCEPTANCE OF WORK:

A. When all work of this contract has been completed, including cleanup and restoration, the Contractor shall notify the Contracting Officer Representative in writing. The Contracting Officer Representative will then make a final inspection. When defects, errors, and omissions disclosed by the final inspection have been corrected, acceptance will be given in writing. But until such acceptance, the Contractor will be responsible for the work of this contract. At the option of the Contracting Officer Representative, acceptance may be given prior to the operation and use of the facility. However, in this event, final payment will be withheld until all corrections have been made.

3.1.3 GUARANTEE:

A. All work including materials, equipment, and labor performed under this contact shall be guaranteed for a period of one year from date acceptance by the Government.

END

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