140R6024Q0012_Amendment_0001_0001.pdf

Solicitation No. 140R6024Q0016 Amendment No. 00001

Question and Answers for the Pathfinder Battery System Replacement

1. Can you please confirm if the chargers are single phase or three phase AC input?

Also, based on the part number provided, this charger does not require any options, however, looking at the description provided, the options to be included should be:

11F – Special 30mV Filtering 45R – Discrete Alarm Relays 38D – Copper Ground Bus Bar 11L – Lightning Arrestor A: This is correct. The options COULD be included in the part number, but we do not have that part number. This is brand name or equal.

2. The smallest 48VDC 3 phase input charger is a 50 Amp charger.

A: This was an error. The charger is a 48VDC 3 phase 50 Amp charger. Please see the attached updated Salient Characteristics.

3. The price breakdown page listed 125VDC battery chargers (2).

A: This was a typographical error. The battery chargers (2) should be 48VDC.

4. Can the new batteries be installed in the same location as the existing batteries? Are the chargers already installed or will those need to be procured and installed in this solicitation? If new chargers need to be installed, will they be in the existing location or will they require to be in a new location?

A: The batteries and the chargers will be installed by the Bureau of Reclamation. Both the batteries and the chargers are to be procured with this solicitation.

5. This amendment will extend the due date to January 12, 2024 at 1500 MS.

Salient Characteristics

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WY – Pathfinder Battery System Replacement

1. Scope

a. Bureau of Reclamation, Wyoming Area Office (WYAO ) is seeking bid solicitation from contractors to supply the materials required to replace a 48VDC battery bank and two 48VDC battery chargers. Material required are listed below in Section 3.

2. Objectives

a. Supply the replacement 48VDC system for Pathfinder Dam by 07/01/2024.

3. Required Salient Characteristics

a. Standard Equipment

i. One 48VDC Battery Bank

ii. Two 48VDC (Volts of Direct Current) Replacement Chargers

b. Additional Requirements

i. Battery Bank (qty 1)

1. 48VDC

a. VRLA (valve regulated lead-acid) batteries that are similar to GNB 90G-09 Absolyte battery

b. 24 Cells

c. 344 Ah (Ampere-hours (8 hr.))

d. 2.0 VDC Nominal

e. One positive and one negative, color coded, posts per cell.

f. Cells have protective covers for terminals.

g. Modular steel tray (6 cells wide by 4 cells high)

h. Safety vent – 3-10 psi opening pressure, self-resealing.

i. Provide no-oxide grease to make all the battery connections.

j. Provide labels to number cells.

k. Provide safety data sheets (SDS) for the cell and electrolyte.

l. Provide inter-cell connection hardware, including all necessary equipment such as insulated inter-cell connector bars, nuts, bolts, and washers with a rounded edge.

ii. Replacement Chargers (qty 2)

1. 48VDC, 480VAC (Volts of Direct Current) 3 Phase, 50ADC (Amps of Direct Current), Eliminator Filter

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a. General Specifications: similar to Hindel ATEVO

ATEV3048050E480SSXXXXXI

b. 5 Year Product Warranty

c. Input Voltage: 480 VAC, 3 Phase, 60Hz (Hertz)

d. Input Voltage Tolerance: +10%, -12%

e. Input Frequency Tolerance: +/- 5%

f. Output Voltage: 48 VDC

g. Output Amperage: 50 ADC

h. Filtering: Battery Eliminator Option: 30mV without battery

i. Forced load share during parallel operation

j. Supplied load share cable for parallel operation

k. Seismic Certification

l. Operating Ambient Temperature: 14°F to 122°F

m. Operating Altitude: 6,000 Feet above sea level without derating

n. Relative Humidity: 0% to 99% (without condensation)

o. Alarm assembly with local LEDs and summary relay contact for

AC Failure, DC Failure, High Vdc, Low Vdc, Positive(+) and Negative(-) ground fault

p. High DC voltage shutdown

q. AC On indicating light

r. AC input and DC output circuit breaker

s. CU-AL I/O compression lugs

t. NEMA-1/IP20 type standard enclosure

u. High AIC (Ampere Interrupting Capacity) Breakers

v. Auxiliary alarm relay board

w. Copper ground bus

x. AC lightning arrestor

y. Floor mounting stand

z. Barrier-type alarm terminal block

4. Required Performance Specifications

a. Batteries shall be manufactured no more than 6 months prior to delivery

b. The delivery location is:

Bureau of Reclamation – Warehouse ATTN: PA Battery – Jeremy Hickox 205 Chamberlain Rd.

Mills, WY 82644

i. The point of Contact is Jeremy Hickox (jhickox@usbr.gov) and Larry Wood (lwood@usbr.gov) mailto:lwood@usbr.gov

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c. Delivery will be conducted during business hours, Monday through Friday 8:00 AM to 4:00 PM. Contact Larry Wood (lwood@usbr.gov) with time truck will be arriving at least three days before arrival. No deliveries on federal holidays.

d. Delivery must be completed no later than July 1, 2024.

5. Government Furnished Property

a. The government will supply the external anchor bolts for installing the rack.

6. Place of Performance

a. The contractor shall deliver all components by July 1, 2024.