IFB 20261005 VGRIP Substation Transformer IFB.pdf

IFB 20261005

EAST – Transformer 69kV to 13.2 kV

Page 1 of 34 Offeror’s Initials

15022 Lee Highway, Bristol, Virginia 24202

21297 Old Dominion Road, Bristol, Virginia 24202

INVITATION FOR BIDS

IFB Number: 20261005

Title: Substation Transformer 18/24/30 MVA, Step Down from 69kV to 13.2 kV

Acceptance Date: Bids must be received prior to Tuesday, November 10, 2026, 11:00 EST

Bids will be publicly opened Tuesday, November 10, 2026, 2026, 11:00 EST

BVU Authority, a political subdivision of Virginia, is soliciting bids from qualified Offerors for a substation transformer as detailed within this Invitation for Bid (IFB.)

All bids received after the appointed date and hour for receipt, whether by mail or otherwise, will not be opened, will be date and time stamped, marked “late,” and retained unopened in the procurement file. Offerors are solely responsible for ensuring bids are received in the Purchasing Agent’s office by the designated date and time.

Instructions for submitting bids are included within the Invitation for Bids (IFB.)

All inquiries for information should be directed to Vicki Warren, Purchasing Agent/Warehouse Supervisor, at vpwarren@bvua.com

This document can be downloaded from www.eva.virginia.gov.

If you need any accommodation for any type of disability in order to participate in this procurement, please contact the Purchasing Agent.

Vicki Warren Purchasing Agent / Warehouse Supervisor vpwarren@bvua.com mailto:vpwarren@bvua.com http://www.eva.virginia.gov/

Page 2 of 34 Offeror’s Initials

1.0 SUMMARY OF IFB. BVU Authority, a political subdivision of Virginia, invites qualified and responsible offerors to submit a written bid for the furnishing of one (1) substation three phase transformer with capacity of 18/24/30 MVA. This transformer must step down the voltage from 69 kV to

13.2 kV with on-load tap changers designed and equipped per the attached technical specifications.

Funds for this transformer are being obtained through the Virginia Grid Reliability Improvement Program (VGRIP). As such, the proposed transformer must comply with the Build America, Buy America law (BABA), a part of the Infrastructure Investment and Jobs Act. BABA requires that all iron, steel, manufactured products, and construction materials provided under this contract shall be produced in the United States of America.

2.0 IFB SECTIONS. The IFB is divided into sections, and each section should be read and completed.

The entire IFB should be submitted in page order, with any additional documentation attached at the end of the IFB.

3.0 COMPETITION INTENDED. The IFB is designed to solicit competitive responses. It shall be the offeror’s responsibility to advise the Purchasing Agent in writing if any language requirement, specification, etc., or any combination thereof, inadvertently restricts or limits the requirements stated in this IFB to a single source. Such notification must be received by the Purchasing Agent not later than five

(5) days prior to the date set for acceptance of bids.

Small, Women-owned, and Minority-owned Businesses are encouraged to respond.

4.0 INSTRUCTIONS FOR SUBMITTING BIDS

4.1 Submission of Bids. All bids shall be signed in ink by the individual or authorized principals of the firm. All attachments to the IFB required to be executed by the Offeror are to be returned with the bids.

It is the Offeror’s responsibility that the bids are received by the Purchasing Agent BEFORE the hour specified on the opening date. Requests for extensions of this time and date will not be granted.

Firms mailing their bids shall allow for normal mail time to ensure receipt of their bids by the Purchasing Agent prior to the time and date fixed for acceptance of the bids.

Offerors who hand-deliver their bids shall call or text the Purchasing Agent at 276-967-0700 to coordinate delivery before the time of acceptance.

For those who submit bids in hard copy form, firms shall submit one (1) original and four (4) copies of their bid. The original bid shall be clearly marked. The face of the envelope/package shall indicate the IFB number, title of the IFB, acceptance date and time, and name and address of Offeror.

Bids will be publicly accepted and logged at the time and date received by the Purchasing Agent.

Late bids – those received after the appointed date and hour for acceptance, whether by mail or otherwise

- will not be opened, will be date and time stamped, marked “late,” and retained unopened in the procurement file.

PLEASE NOTE - BVU Authority prefers that bids be submitted via eVA - Virginia’s Marketplace at www.eva.virginia.gov. There is no fee for submitting bids through eVA.

Page 3 of 34 Offeror’s Initials

Bids may also be mailed, or hand delivered as follows:

U.S. Mail: Parcel Delivery: Hand Delivery:

BVU Authority Attn: Purchasing Agent P.O. Box 8100 Bristol, Virginia 24203-8100

BVU Authority Attn: Purchasing Agent 21297 Old Dominion Road Bristol, Virginia 24202

BVU Authority Attn: Purchasing Agent 21297 Old Dominion Road Bristol, Virginia 24202

4.2 Questions and Inquiries. Questions and inquiries related to the IFB, will be accepted from all firms. Inquiries pertaining to this IFB must give IFB number, title, and acceptance date. Material questions will be answered in writing and will be posted as an addendum at www.eva.virginia.gov.

All questions must be received by email ten (10) days prior to acceptance date and must be sent to the Purchasing Agent (vpwarren@bvua.com.)

4.3 Addendum and Supplement to IFB. If it becomes necessary to revise any part of this IFB or if additional data are necessary to enable an exact interpretation of provisions of this request, an addendum will be issued. It is the responsibility of the offeror to ensure that all addenda have been received prior to submitting a bid. The addendum will be posted to www.eva.virginia.gov and if necessary, the acceptance date will be modified.

4.4 Bid Pricing. The offeror shall submit bid on Attachment C - Bid Worksheet with additional details attached to the end of the IFB. Bid pricing must be firm and allow BVU Authority acceptance for sixty (60) days from bid acceptance date to allow BVU Authority to review and determine the bid which is in the best interest of BVU Authority.

Bid shall include designs and drawings based on the Scope of Goods and Services within the IFB, specify price, any applicable price terms, and delivery time. All prices shall include delivery to substation site, set on the pad, fully assembled and certified by the manufacturer as ready for operation.

4.5 Proprietary Information. Trade secrets or proprietary information submitted by an offeror in connection with this solicitation shall not be subject to disclosure under the Virginia Freedom of Information Act; however, the offeror must invoke the protections of this section prior to or upon submission of the data or other materials and must clearly identify the data or other materials to be protected and state the reasons why protection is necessary. Offerors shall not mark sections of their bid as proprietary if they are to be part of the award of the contract and are of a "Material" nature. Any proprietary information must be listed on Attachment D - Proprietary/Confidential Information Identification and submitted with the bid.

4.6 Authority to Bind Firm in Contract. Bids MUST give full firm name and address of offeror. Failure to manually sign bid may disqualify it. Person signing bid must show TITLE or AUTHORITY TO BIND FIRM IN A CONTRACT. Firm name and authorized signature must appear on bid in the space provided, where applicable.

4.7 Withdrawal of Bids. Bids may be withdrawn upon written request from the offeror at the address shown in the solicitation prior to the time of acceptance. Negligence on the part of the offeror in preparing the bid confers no right of withdrawal after the time fixed for the acceptance of the bids.

4.8 Rights of BVU Authority. BVU Authority reserves the right to accept or reject all or any part of any bid, waive informalities, and award the contract to best serve the interest of BVU Authority.

http://www.eva.virginia.gov/ mailto:vpwarren@bvua.com

Page 4 of 34 Offeror’s Initials

4.9 Deviations from Scope of Goods and Services. If there is a proposed deviation from that prescribed in the Scope of Services, the appropriate line in the Scope shall be noted on Attachment E - Deviations from the Scope of Services with the deviation detailed. BVU Authority reserves the right to determine the responsiveness of an offer containing any deviation. BVU Authority reserves the right to reject any changes by offeror of bids received or to negotiate separately in any manner necessary to serve the best interests of BVU Authority.

If there are no deviations, write “None” on the form.

4.10 Bid Expenses. BVU Authority will not be responsible for any expenses incurred by a firm in preparing and submitting a bid. All bids shall provide a straightforward, concise delineation of the firm’s capabilities to satisfy the requirements of this request. Emphasis should be on completeness and clarity of content.

4.11 Bid Presentation. Offerors who submit a bid in response to this IFB may be required to make a presentation of their bid. The Purchasing Agent will schedule the time and location for this presentation.

4.12 Bid Integration with Contract. The contents of the bid submitted by the successful offeror and this IFB are intended to become part of any contract awarded.

4.13 Announcement of Award. A Notice of Award may be posted on the eVA website (www.eva.virginia.gov).

4.14 Protest. Offerors may refer to Sections 2.2-4357 through 2.2-4364 of the Code of Virginia to determine their remedies concerning this competitive process.

4.15 Inclement Weather/Closure of BVU Authority Facilities.

If BVU Authority is closed for business at the time scheduled for acceptance of bids, for whatever reason, bids will be accepted on the next scheduled business day, at the originally scheduled time.

5.0 SPECIFIC BID REQUIREMENTS

Bids should be as thorough and detailed as necessary to allow BVU Authority to properly evaluate the offeror's capabilities to provide the required goods. All IFB pages are to be initialed, submitted in order, with additional documentation attached at the end of the IFB.

Offerors are required to submit the following in addition to the IFB, for the submission to be considered complete.

5.1 Signature Sheet with Non-Collusion Clause. The offeror shall complete and submit ATTACHMENT F - Signature Sheet with Non-Collusion Clause.

5.2 Cover Letter. Offeror should also submit a brief cover letter. The cover letter should summarize key elements of the bid. An individual authorized to bind the Contractor must sign the letter and indicate the address, email address, and telephone number of the Contractor's office.

5.3 Required Contractor Information. Offerors must provide the following information about the Contractor and any company that is proposing to partner or subcontract with or fulfill this contract so that BVU Authority can evaluate the Contractor's stability and ability to support the commitments set forth in response to this IFB.

Page 5 of 34 Offeror’s Initials

A. State your organization's ability to meet the required specifications.

B. Provide any literature or sales material related to the product specified in this IFB.

C. Describe any other services included with the transformer, such as:

-arranging transportation/ delivery -providing crane services at substation, -placing transformer on the pad.

BVU Authority may, at its option, require the Contractor to furnish additional information or clarification.

5.4 Company Statement of Qualifications. Provide a brief background on your company and experience in building transformers.

5.5 Brief Summary of Similar Project. Provide a summary of your firm’s experience with similar type request fulfillments during the last two (2) years. Include any work with state and/or local governments.

5.6 Exceptions to the IFB. All requested information in this IFB must be supplied. Contractors may take exception to certain requirements in the IFB. All exceptions shall be clearly identified on Attachment G - Exceptions to IFB.

If there are no deviations, write “None” on the form.

6.0 EVALUATION OF BIDS

6.1 Experience. The successful offeror shall demonstrate adequate knowledge regarding the requested goods.

6.2 Price. Although considered, price will not be the sole factor in determining the award, if one is made. The following factors will also be considered: delivery, proximity of manufacturing facility and repair facilities, cost to attend final testing, amount of experience, and quality of references of similar size and type units produced at the proposed plant.

6.3 BVU Authority is not required to furnish a statement of the reason(s) why a bid was not deemed to be the most advantageous.

6.4 If the bid by the lowest responsive and responsible Offeror exceeds available funds, BVU Authority reserves the right to negotiate with the apparent lowest responsible Offeror.

7.0 CONTRACT AWARD

7.1 Agreement for Goods & Non-Professional Services. The Contractor will be expected to sign an agreement for goods and non-professional services. BVU Authority will prepare and transmit the agreement to the Contractor. The Contractor shall execute and return the contract documents to BVU Authority within ten (10) days of receipt. The bid submittal shall be integrated into the contract between BVU Authority and the Contractor. Attachment A is a sample agreement. All contract provisions that have not been stated herein will be drafted and included, as necessary.

7.2 Availability of Funds. Work under the contract is dependent on funds being available.

Page 6 of 34 Offeror’s Initials

8.00 Buy America, Build America.

Due to the funding nature of the procurement, in accordance with the Infrastructure Investment and Jobs Act, all iron, steel, manufactured products, and construction materials used in the project must be produced in the United States [(U.S.)] BABA 70914(a). Offerors must provide affidavits as to the source of materials used in the production of the goods being purchased.

Page 7 of 34 Offeror’s Initials

ATTACHMENT A

SAMPLE AGREEMENT

Agreement for Goods & Non-Professional Services

This Agreement for Goods & Non-Professional Services (“Agreement”) made and entered on between BVU Authority (“BVU AUTHORITYA”), located at 15022 Lee Highway, Bristol Virginia 24202 and (“Contractor”) located at

RECITAL

BVU AUTHORITYA and Contractor desire to enter into this Agreement to provide which provides for each party’s responsibilities with respect to the services (“Services”) as described in the Substation Transformers Invitation for bids (IFB).

AGREEMENTS

In consideration of the recital and other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the parties agree as follows:

1. Contractor Responsibilities. Contractor will perform the Services as set forth in the Scope of Services of the IFB to the reasonable satisfaction of BVU AUTHORITYA.

2. Fees. Upon satisfactory performance of the Services, BVU AUTHORITYA shall pay

Contractor the negotiated amount for each Purchase Order as set forth in the IFB.

3. Term. The term of this Agreement shall be from the date of this Agreement for a period of one (1) year renewed annually up to four (4) additional years pending annual review and approval by BVU AUTHORITY. This Agreement may be terminated or extended by either party as set forth in the IFB.

4. Attachments. All attachments identified in the IFB are incorporated by reference into this

Agreement.

The parties acknowledge their acceptance of the all the terms and conditions of this Agreement by the signatures below of their authorized representatives.

CONTRACTOR BVU AUTHORITY

By: By:

Name: Name: Donald L. Bowman, P.E

Title: Title: President and CEO

Page 8 of 34 Offeror’s Initials

ATTACHMENT B

SCOPE OF GOODS AND SERVICES

B.1 Overview. This scope of services sets forth the minimum requirements for the design, manufacture, testing and delivery of one (1) outdoor, three phase, oil-immersed 18/24/30 MVA, 69-13 kV substation power transformers with LTC (Load Tap Changer) and the provision of manufacturer's special field services.

B.2 References

A. American National Standards Institute (ANSI)

A58.1, Minimum Design Loads for Buildings and Other Structures B16.5, Slip-on

Welding Flanges

C80.1, Standard Specifications for Rigid Steel Conduit

B. American National Standards Institute (ANSI)/ Institute of Electrical and Electronics Engineers (IEEE)

(ANSI/IEEE)

C2, National Electrical Safety Code

C57.12.10, Requirements for Transformers 230 kV and Below, 833/958 through 8333/10417 kVA

Single Phase and 750/862 through 60000/80000/100000 kVA Three Phase

C57.12.70, Terminal Markings and Connections for Distribution and Power Transformers

C57.92, Guide for Loading Mineral-Oil Immersed Power Transformers Up to and Including 100 MVA with

55 Deg C or 65 Deg C Winding Rise

C57.12.00, General Requirements for Liquid-Immersed Distribution, Power and Regulating Transformers

C57.12.11, Guide for Installation of Oil-Immersed Transformers (10 MVA and Larger, and 69 kV to 287 kV Ratings)

C57.12.80, Terminology for Power and Distribution Transformers

C57.12.90, Test Code for Liquid-Immersed Distribution, Power and Regulating Transformers and Guide for Short-Circuit Testing of Distribution and Power Transformers

C57 .13, Standard Requirements for Instrument Transformers

C57.13.1, Guide for Field Testing of Relaying Current Transformers

C57.13.3, Guide for the Grounding of Instrument Transformer Secondary Circuits and Cases

C57.19.00, Standard General Requirements and Test Procedures for Outdoor Power Apparatus Bushings

C57.19.01, Standard Performance Characteristics and Dimensions for Outdoor Apparatus Bushings

C57.19.100, Guide for Application of Power Apparatus Bushings

C57.93, Guide for Installation of Liquid-Immersed Power Transformers

C57.98, Guide for Transformer Impulse Tests (Appendix to ANSI/IEEE C57.12.90)

C57.120, Loss Evaluation Guide for Power Transformers and Reactors

C62.11, Standard for Metal-Oxide Surge Arresters for Alternating Current Systems

C62.33, Guide for the Application of Metal-Oxide Surge Arresters for Alternating Current Systems

C. American Society for Testing and Materials (ASTM)

B3-74, Specification for Soft or Annealed Copper Wire

B48-68, Specification for Soft Rectangular and Square Bare Copper Wire for Electrical Conductors B187- 83, Specification for Copper Bus Bar, Rod, and Shapes

D-3487, Mineral, Insulating Oil Used in Electrical Apparatus

D. National Electrical Manufacturers Association (NEMA)

ICS-1, Industrial Control and Systems: General Requirements

TR-1, Transformer, Regulators and Reactors

WC5, Thermoplastic insulated Wire and Cable for the Transmission and Distribution of Electrical Energy

Page 9 of 34 Offeror’s Initials

WC7, Cross-linked Thermosetting-Polyethylene-Insulated Wire and Cable for the Transmission and

Distribution of Electrical Energy

WC8, Ethylene-Propylene-Rubber-Insulated Wire and Cable for the Transmission and Distribution of Electrical Energy

E. National Fire Protection Association (NFPA)

70, National Electrical Code (NEC), Current Rating of Control Wiring

B.3 General Services

Design, manufacture, and test in accordance with this Section and applicable sections of standards listed in

Section B.3 in effect at the Issue Date of this RFP.

A. Design Requirements

1. Furnish oil immersed 3-phase power transformer applied as distribution substation step-down transformers.

2. Furnish with automatic load tap changer (LTC) on low voltage windings.

3. Design and manufacture: standard design with components by same vendor.

4. Design equipment, accessories and supporting structures to meet requirements of project site conditions.

5. Design transformers to operate in parallel under normal conditions with future transformer of like rating in the Buyer's Substation.

B. Performance Requirements

1. Loss Evaluation: in accordance with the Procurement Agreement.

2. Audible Sound Level: average A-weighted, measured in accordance with ANSI C57.12.90.

a. 18 MVA: 76 dB

b. 24 MVA: 78dB

c. 30 MVA: 79 dB

C. Overload Capacities

In accordance with ANSI/IEEE C57.92. Design bushings, connectors, leads, LTC, and all ancillary equipment for continuous full load duty and for emergency service at 1.4 times the transformer full load current at the 30 MVA rating for a period of eight hours.

B.4 Submittals

A. Product Data, catalogs and cut sheets.

B. Shop Drawings

1. Outline showing general arrangement, legend, plan, elevation, base details, weights, dimensions, gallons of oil, with location of center of gravity with and without oil on outline.

2. Connection, alarm, control, current, voltage, and auxiliary schematic diagrams.

3. Internal wiring and connection diagrams (tabular format is not acceptable).

4. Bushing current transformers

a. Excitation and ratio correction factor curves for each secondary ratio.

b. Resistance of current transformer secondary and connecting leads for each ratio.

c. Actual current ratio and tum ratio for each tap.

d. Mechanical and thermal short time (one second) rating.

5. Nameplate data, including all current transformer taps. Resubmit nameplate drawing after factory tests with all fill-in data completed.

Page 10 of 34 Offeror’s Initials

6. Physical drawings showing equipment arrangement, terminal block locations, cable entrance and panel layout.

7. Terminal block connections.

8. Bushing lifting accessories and ground pad outlines.

9. Notes and symbols.

10. Bill of material.

11. Detailed description of procedure for vacuum filling of transformers with insulating oil.

C. Quality Assurance/Control Submittals

1. Design Data

a. Certified seismic qualification tests and analyses.

b. Certified short circuit withstand test results on units of comparable rating and design.

2. Test Reports

3. Manufacturer's Instructions

4. Manufacturer's Field Reports

B.5 Delivery, Storage and Handling

A. Attach impact recorder to the transformers during transportation periods. Unseal impact recorder only in presence of Buyer or Engineer.

B. Deliver transformer oil to Buyer's site including all necessary equipment for the oil filling operation.

B.6 Project/Site Conditions

A. Environmental Requirements

Isokeraunic level: 50 thunderstorm days per year

Seismic Zone: Zone 2 as defined by UBC

Combined ice and wind Loading district: NESC Heavy

Wind Loading: NESC Heavy 90mph

Elevation above sea level: less than 3,300 feet - National Geodetic Vertical Datum

B.7 Maintenance and Warranty

A. Required Spare Parts

1. Touch-up paint: ANSI No. 70, Light Gray, 3 one-quart containers.

2. High voltage bushings: one with associated gaskets.

3. Low voltage bushings: one with associated gaskets.

4. Gaskets for cover, case, LTC, manhole and handhole: one set.

B. Other parts, if recommended by seller:

1. Contacts and coils for each type of relay furnished: one complete set.

2. Pressure gauge of each type furnished: one set.

3. Indicators for all temperature devices: one set.

4. Other parts recommended: at Buyer's option.

Spare Parts shall be interchangeable with and of same material and workmanship as corresponding original parts and shall be delivered with units to project storage facilities.

C. Warranty Provide at least a five-year manufacturer’s warranty on Goods and Services provided.

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B.8 Power Transformers

A. Principal ratings and electrical characteristics

1. Overload capabilities: in accordance with ANSI C57.92 and the requirements specified in section B.3.B.

2. Continuous Ratings

a. OA, 55 degrees C rise: 18MVA

b. FA, 55 degrees C rise, first stage forced cooling: 24 MVA

c. FA, 55 degrees C rise, second stage, forced cooling: 30 MVA

d. 65 degrees C rise: 33.6 MVA

3. Number of Phases: 3

4. Frequency: 60 Hz

5. Cooling Class: ONAN/ONAF/ONAF

6. 6. High to low voltage impedance: 7.00%

7. 7. High Voltage rated windings:

a. Voltage: 69 kV

b. Connection: Delta

c. No-load tap changer: plus, or minus 5 percent in four 2.5 percent steps

8. Low voltage winding:

a. Rated Voltage: 13.09 kV

b. Connection: wye, with neutral brought out

9. Basic Impulse Level (BIL):

a. H winding: 350 kV

b. X winding: 110 kV

10. Maximum Temperature Rise

a. By resistance: 65 degrees C

b. By hot spot: 80 degrees C

11. Duty: Continuous

12. Angular phase displacement: 30 degrees, low voltage lagging high voltage

B. Components

1. Transformer Tank

a. Construction: welded steel plate, liquid tight, with bolted and gasketed manhole on top of tank, mounted on steel skid base, and suitable for skidding in any direction.

b. Provide with jacking lugs and pulling eyes for lifting or moving along either axis when completely assembled and oil filled.

c. Mount a fall control ring(s) on the top of each transformer tank to accommodate worker safety device attachment. Form 4-inch rings from 1/2-inch diameter rod. Locate so that a worker wearing a 6.5-foot safety tether can work anywhere on top of the transformer, including the bushings, while hooked into the fall control ring.

d. Provide with two copper faced ground pads at diagonal comers near base, with two-bolt terminal connectors.

e. Mount separate blocks on all corners of the tank on the high voltage side, in a vertical line spaced no more than 3 feet apart to support the ground cable loop when connected to the high voltage surge arresters.

f. Maintain positive pressure continually to prevent ingress of moisture during shipping.

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2. Core

a. Material: highest quality, non-aging, cold-rolled, grain-oriented, stress-free, thin silicon steel laminations, with high permeability and low hysteresis loss.

b. b. Properly anneal with smooth surfaces at edges.

c. Provide each sheet with an insulated surface treatment impervious to hot transformer oil.

d. Carefully assemble, rigidly clamp and block to prevent deteriorating vibrations, interference with oil circulation, objectionable noise conditions and distortions due to short circuit and shipment.

e. Both the main and the PA core grounds shall be brought out of the main tank and ground externally by utilizing core ground bushings that are easily accessible and designed for measuring the insulation resistance of each core’s ground.

f. Provide with means for properly lifting and moving core assembly when untanked.

3. Windings

a. Material: electrolytic copper with high conductivity characteristics, conforming to ASTM B3-74 or B48-

68.

b. Provide with insulation system of high dielectric and mechanical strength, arranged to permit free circulation of oil.

c. Make up, shape and brace to provide for expansion and contraction due to temperature changes and to avoid abrasion of insulation.

d. Adequately clamp and brace to prevent distortion or increase in noise above specified limits due to aging in continuous service at rated operating conditions.

4. Cooling Equipment

a. Type: two-stage FA/FA conforming to ratings previously specified.

b. Radiators:

1. Nominal dimensions and interchangeable.

2. Welded construction, with flanged connections and provisions for draining and venting.

3. Provided with lifting eyes or lugs.

4. Furnished with oil-tight valves at all connections to main tank that will allow removal of radiators without taking transformers out of service.

c. Fans: weatherproof construction with motors designed for fan duty. Blades and guards shall be galvanized.

d. Controls:

1. Automatically controlled by the winding temperature device, provided with air circuit breaker of suitable rating, automatic starting switches, auxiliary relays, alarm contacts, select switch for AUTOMATIC-OFF-MANUAL operation and any other necessary devices.

2. Include provisions for SCADA control and status indication of all stages of cooling equipment.

3. Mounted in each main transformer control cabinet.

4. Designed so stage of cooling equipment can be selected for operation with first stage forced cooling.

5. Transformer Oil:

a. All oil shall pass the Doble (TOPS) transformer oil purchase specification requirements. Oil test results and certifications shall be provided.

b. Pure mineral oil obtained by fractional distillation unmixed with other substances, meeting the requirements of ASTM D 3487.

c. Prepared and refined especially for transformer use, free of moisture, acid, alkali, PCB's and injurious sulfur compounds.

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d. Free from deposit formation under normal operating temperatures.

e. Dielectric strength: not less than 26,000 volts between one-inch discs spaced 1/10 inch apart.

6. Oil Preservation System: positive pressure nitrogen

a. Include adequate amount of bottled nitrogen to place transformers in service.

b. Nitrogen control equipment: mounted in easily accessible weatherproof lockable enclosure with adequate space for nitrogen bottles mounted on each transformer tank.

c. Nitrogen leads: soft drawn copper tubing.

d. Provide a certificate of ownership with nitrogen tank.

7. Bushings: All high and low voltage bushings shall be ABB O+C and shall be provided with a test tap for making C1 and C2 measurements. Manufacturer shall provide one spare bushing of each type.

a. Bushing studs: threaded, stud type, silver plated.

b. Porcelain: manufactured by the wet process.

c. Glazing: free of imperfections.

d. Color: ANSI No. 70, Light Gray.

e. High voltage bushings

i. Type: Standard Condenser type.

ii. BIL rating: 350 kV

iii. Creepage distance: Standard

iv. Mounting: On tank cover

v. Tap: Capacitive for bushing potential device

vi. Connectors: Stud to flat, tinned NEMA four-hole pad

f. Low voltage bushings and neutral bushing

i. BIL rating: 110 kV

ii. Creepage distance: Standard

iii. Mounting: On tank cover

iv. Connectors: Stud to flat, tinner NEMA four-hole pad

8. Bushing Current Transformers (BCT):

a. Windings: fully distributed.

b. Leads:

c. Terminate at a 6-point CT shorting terminal block. The sixth point of each block shall be wired to the ground car in the control cabinet and terminated on the same side of the shorting terminal block as the CT wiring.

d. Terminate each BCT on separate block.

e. Mark leads with permanent sleeve markers to indicate taps and polarity.

f. Use No. 10 AWG stranded copper with oil proof insulation.

g. Relaying current transformers:

i. Type: multi-ratio, 5 lead, bushing type for relaying duty.

ii. Number and Ratio:

Three 600:5 on each high voltage bushing. Class C400

Three 2000:5 on each low voltage bushing, Class C400

One 600:5 on low voltage neutral bushing. Class C400

9. Surge Arresters

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a. Type: station class, polymer housing, metal oxide type, Ohio Brass, Dynavar PVN or equal.

b. Ratings

1. Nominal voltage: 69 kV i MCOV: 48 kV ii Duty cycle: 60 kV

2. Nominal voltage: 13.09 kV i MCOV: 8.4 kV ii Duty cycle: 10 kV

c. Color: ANSI No. 70, Light Gray.

10. No-Load Tap Changer (NLTC)

a. Provide for external operation when transformers are de-energized.

b. Provide with indicating pointer, dial, and means for locking in any position.

c. Mount on sidewall approximately 6 inches from the top of the tank.

d. Provide for capability of withstanding full transformer short circuit current without damage.

e. Configure to prevent leaving a winding open or short circuited when operating handle is in locked position.

f. Provide with two 2-1/2 percent taps above and two 2-1/2 percent taps below rated voltage.

11. Automatic Load Tap Changer (LTC)

a. Manufacturer: Reinhausen, Model RMV-11-2000

b. Location: Low voltage winding.

c. Regulating range: 10 percent above to 10 percent below rated voltage in 32, 5/8 percent steps, with a total of 33 positions.

d. Rating: deliver full kVA capacity for normal and emergency rating at all LTC positions and at all combinations of LTC and NLTC positions.

e. Tap selector switch and mechanism

1. Mount in oil-filled compartment separate from main transformer tank.

2. Maintain physical isolation, so it is not necessary to drain oil or break seal of main transformer tank when servicing LTC.

f. Type: vacuum switch.

g. Tap step changes:

a. Smooth transition with no low voltage circuit interruption due to contact bounce or failure to maintain contact bypass bridging.

b. Phase to phase and phase to neutral transient voltage dip (flicker) during any step transition: maximum 2 percent of nominal voltage

(262 volts phase to phase, 151 volts phase to neutral at any load).

h. Replacement Ratings

1. Contacts: capable of 500,000 operations without contact replacement.

2. Mechanical Rating: capable of 1,000,000 operations.

i. Tank accessories:

1. Hinged maintenance door with oil-resistant gasket.

2. Drain, filter, and sampling valves.

Page 15 of 34 Offeror’s Initials

3. Magnetic liquid level indicator with low level alarm contacts at 125 volts

DC.

4. Maintenance free dehydrating breather.

5. Manhole for inspection of contacts without lowering oil level.

6. Built-in filtration system, if applicable.

j. . Tap switch, motor drive mechanism, control devices, position indicator and operation counter in accordance with ANSI C57.12.10.

k. Controls

1. Type: Automatic, microprocessor based, Model M-2001D, manufactured by Beckwith Electric.

2. Features:

i. Adjustable voltage bandwidth from 1.5 to 3.0 V.

ii. Adjustable voltage setting from 108 to 132 V.

iii. Time delay range adjustable from 15 to 90 seconds.

iv. High limit/low limit blocking.

v. Line drop compensation.

vi. Proper operation when operated isolated or in parallel.

vii. Controls for parallel operation by the circulating current method.

3. Controls for reduction in regulated output voltage of 2-1/2 or 5 percent, either manually at transformer control cabinet or remotely from supervisory control equipment.

4. Local/remote LTC control capability.

5. Serial interface on front of control and fiber optic serial and fiber optic ethernet on back of control.

l. Equipment:

1. Current transformer for line drop compensation.

2. Position indicator with upper and lower drag hands to indicate maximum travel.

3. Limit switches and stops to prevent travel beyond extreme tap position.

4. Crank or handwheel for manual operation during maintenance.

5. Positive position indication to LTC control using an Incon 1250B position transmitter and receiver with a Beckwith Electric M-2025 current loop interface, no substitution allowed.

6. Positioning devices and off-position contacts.

7. Operations counter.

8. Form B dry contacts wired to local annunciator for lower limit, upper limit, and hung-up alarms.

9. Control circuit protective devices.

10. Control switches for RAISE-LOWER, AUTOMATIC-MANUAL, and LOCAL-

REMOTE (Device 69).

11. Off-Position contact: wired to indicating light in main cabinet.

12. 4-1/2-inch square Selsyn™ indicator provided loose for installation by Buyer on remote switchgear assembly control panel, no substitution allowed.

Page 16 of 34 Offeror’s Initials

13. Low burden AC current relay, wired in circulating current circuit, to prevent excessive circulating current during parallel operation if LTC fails.

a. Mounting: in easily accessible control cabinet

b. Wiring: extended to main terminal cabinet and connected to terminal blocks. Wire power supply switch, light and convenience outlet, space heater and switch to main terminal cabinet.

12. Wire and Terminal Blocks

1. Wiring:

a. 600 volt insulated copper, Class B stranding, 90 degrees C rating.

b. No. 12 AWG minimum for current transformer and branch circuits.

c. No. 14 AWG minimum for control.

d. Installed in galvanized conduit from mechanism housing to accessories.

e. Terminated with crimp type, ring-tongue connectors with non-insulated short shanks;

maximum of two terminations per terminal point.

f. Connected to separate power terminal blocks for power circuits.

g. Clearly identified with permanent sleeve markers at all terminations.

2. Terminal blocks:

a. Provided with bases and barriers molded integrally with brass inserts. Shall be GE

EB25B-12.

b. Rated.at 600 volts.

c. Able to accommodate up to No. 10 AWG wire.

d. Provided with marking strips.

e. Installed in sufficient quantity to provide 20 percent minimum spares for each type of block.

f. Short circuiting type for current transformers. Shall be GE EB27B-06-S.

g. Marked to identify source and function.

13. Control Cabinet

a. Provide weatherproof cabinet.

b. Fasten securely to each transformer tank. Stand control cabinet 18 inches off tank.

c. Doors: vertically hinged with locking provisions and 3-point latching system.

d. External hardware, fasteners, and handle: stainless steel.

e. Conduit entrance: removable, gasketed bottom plate, field drilled.

f. Mount terminal blocks and equipment at least 6 inches above bottom plate.

g. Provide space heaters, partly or totally controlled by thermostat, if recommended by manufacturer.

14. Nitrogen Cabinet

a. Provide weatherproof cabinet.

b. Fasten securely to each transformer tank.

c. Doors: vertically hinged with locking provisions and 3-point latching system.

d. External hardware, fasteners, and handle: stainless steel.

15. Auxiliary and Control Power:

a. 120 or 240 Vac single-phase, for fans, space heaters and other accessories.

b. 125 volts DC for control functions.

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16. Accessories

a. All accessory device alarm contacts shall be wired to inputs on the SEL-2414.

b. The sudden pressure trip, oil temperature trip and winding temperature trip contacts shall be wired to terminal blocks for customer field connection.

c. Provide power transformers with the following accessories.

d. Sudden pressure auxiliary relay: 125 volts DC control voltage, with separate, isolated alarm and trip contacts. Furnish one for the main compartment and one for the LTC compartment.

e. Oil level indicator: magnetic type with low level nonadjustable, 125 volts DC alarm contacts. Furnish one for the main compartment and one for the LTC compartment.

f. Oil temperature indicator: dial type, with adjustable, separate, 125 volts DC alarm and trip contacts. Furnish one for the main compartment and one for the LTC compartment.

g. Winding temperature indicator: four sequential operating contacts, operating from a current transformer in 1 phase of the low voltage winding. (Two contacts for the operation of cooling equipment, one contact for alarm and one contact for tripping).

h. Pressure relief valve device with visual signal flag and, 125 volts DC alarm contacts.

Furnish one for the main compartment and one for the LTC compartment.

i. High inert gas-pressure and vacuum gauge with one alarm contact

j. Low inert gas pressure gauge: one alarm contact for nitrogen supply cylinder with contacts set to activate when cylinder pressure drops below 200 psi.

k. Furnish a 120-volt, 100-watt LED light fixture with SPST switch and a 120-volt, 20-ampere single-phase duplex GFI type receptacle, complete with protective circuit breaker.

l. Other standard accessories: per ANSI C57.12.10.

m. Provide an SEL-2414 Transformer monitor part number 241422C1C9X743C1830 Key

0682 panel mounted in the control cabinet. Alarm contacts from the following devices shall be wired to inputs on the SEL-2414: Sudden pressure alarm main tank, sudden pressure alarm LTC tank, Pressure relief alarm main, pressure relief alarm

LTC, Low nitrogen cylinder, High tank pressure, Low tank pressure, Low oil Main, Low oil LTC, third switch from the winding temperature gauge, third switch from the oil temperature gauge. Separate RTD inputs for winding temperature, oil temperature and ambient temperature shall be wired to the 2414. Three phase AC current from the innermost phase CT'S on the transformer low side shall be wired to the 2414 AC current input terminals. The 2414 AC voltage terminals shall be wired to terminal blocks for customer connection to three phase PT voltages. The 2414 shall be programmed and wired to provide fan control in addition to the winding temperature gauge switches (either the gauge or the 2414 can control the fans) Automatic or manual can be selected by pushbuttons on the 2414 device. Each alarm input shall be programmed to provide an LED indication on the 2414 and display text on the 2414 screen to indicate the alarm condition. The transformer model settings shall be programmed to mimic the manufacture recommended setpoints of the winding temperature gauge for automatic operation.

17. Finishes

a. Clean and treat tank interior and exterior surfaces according to manufacturer's

Page 18 of 34 Offeror’s Initials standards.

b. Apply one prime coat to the exterior surface.

c. Apply two finish coats, ANSI Color No. 70, Light Gray, to the exterior surface. Minimum paint thickness: 6 mils.

d. Apply non-skid coating to top of transformer tank.

e. Paint interior of cabinets white.

f. Paint interior of transformer tank white.

g. External fasteners and hardware: stainless steel or galvanized.

18. Source Quality Control

a. Assemble, adjust, and complete manufacturer's standard production tests in accordance with Table 14 of ANSI C57.12.00, C57.12.90; NEMA TR-I and the following.

b. Impulse test - Perform on terminals of high voltage winding as specified ANSI C57.12.90, Items 10.3. and 10.5. (Front of wave test not required.) Use voltage oscillograms and ground current oscillograms taken simultaneously as specified in ANSI C57.12.90, Items 10.3.1.6 and 10.3.4 1, respectively, for one method of detecting insulation. failure. Height of each individual trace at maximum deflection: 30 millimeters minimum.

c. Do not perform additional impulse tests after the tests have been accepted.

d. After impulse tests are completed, use the average absolute voltage voltmeter method to measure excitation loss.

e. Corona test - 1. Use test equipment and general method in accordance with

IEEE C57.12.90, Item 10.8.

f. Test at full induced-test voltage level.

g. Radio Influence Voltage (RIV): maximum 500 microvolts.

h. Include results of corona test and measured RIV level in certified test report.

i. Insulation resistance test

j. Use test procedure m accordance with ANSI C57.12.90, Item 10.11.

k. Include test plan and test results of insulation resistance test in certified test report in electronic form.

l. Insulation power factor test

m. Use test procedure in accordance with ANSI C57.12.90, Item 10.10

n. Include test plan and test results of insulation power factor test in certified test report in electronic form.

o. Short-circuit capability - Warrant that the transformers will meet requirements of

ANSI C57.12.00.

p. Pressure test tank with nitrogen tubing installed

q. Noise tests for each stage of cooling

r. Temperature rise test for OA and maximum load. (Test results from identical unit maybe accepted by Buyer if adequate documentation is submitted.)

s. Dielectric tests on control devices and wiring per NEMA ICS-1.

t. Current transformer

u. Low frequency, one-minute 2,500 volts to ground dielectric test on secondaries

v. Proper nameplate and polarity markings check

w. Polarity and ammeter ratio check after installation of bushing

x. Core ground megger test

Page 19 of 34 Offeror’s Initials

19. Manufacturers Field Services (Service Engineer)

a. Visually inspect goods upon delivery. Prior to the Buyer accepting delivery, provide a written report to the Buyer and the Engineer itemizing any damage incurred.

b. Unseal impact recorders and inspect impact recorder tapes in the presence of Buyer and

Engineer immediately upon delivery.

a. Coordinate with Buyer's Substation Contractor and perform the following.

i. Record shipping gas pressure prior to assembly.

ii. Perform transformer field assembly.

iii. Thoroughly inspect all visible assembled parts and connections.

iv. Provide equipment for and perform vacuum filling of transformer with insulating oil in accordance with ANSI C57.12.11.

v. Thoroughly search for leaks.

vi. Check all gauges and relays to ensure proper working condition.

vii. Check and operate all cooling equipment.

viii. Visually inspect and operate tap changers to verify satisfactory operation.

ix. Remove oil sample and test prior to energizing to determine if the dielectric strength is acceptable. Filter the oil, if necessary. Testing shall be done by an

Independent Testing Laboratory. Results shall be immediately sent to Buyer and

Engineer for approval.

x. Test all wiring and components for continuity and megger for insulation resistance.

xi. Verify operation of heater, auxiliary, convenience outlet, and light circuits.

Disconnect the main core ground and megger the core insulation resistance.

Reconnect the ground upon completion of the test.

b. Perform manufacturer's standard and optional field tests in accordance with

ANSI C57 12.11.8-1980, and submit written and electronic results of tests performed, including the following:

i. Insulation power factor test on all windings and bushings.

ii. Turn ratio test.

iii. Insulation and winding resistance test.

iv. Megger, Ratio, and Polarity test all CT's.

v. SFRA

vi. Additional tests as determined by the manufacturer.

vii. Make additional trips only with written approval of the Buyer.

20. Locations of the Substation. Substations shall remain fully operational during installation. If contractor must be de-energized due to legitimate safety concerns, the installation shall be planned for spring or fall.

East Bristol Substation 2484 Valley Drive Bristol, VA 24201

21. Safety. The Contractor must certify that they meet all OSHA, and Virginia safety laws & regulations.

Page 20 of 34 Offeror’s Initials

22. Capabilities. The Contractor must demonstrate they have experience and the ability to plan and execute the proposed work.

23. Subcontractors. Any subcontracted services must be clearly identified after award.

24. Personnel Qualifications. The personnel used by the Contractor for the performance of this work shall be experienced and shall be capable and qualified in performing the work.

25. Personnel Changes. Any changes that may occur in key personnel after award shall be submitted in writing by the Contractor to the Contract Administrator five (5) working days prior to such change.

BVU reserves the right to refuse assignment of any personnel deemed by BVU to have inadequate training or credentials.

26. Not to Exceed Estimates of Work Not Specified Under Contract. Upon request by BVU and for work with adequate plans and specifications or written directions, the Contractor should prepare and submit to BVU a written not to exceed estimate required to perform the work not specified under this contract.

27. Invoice & Method of Payment. Contractor shall invoice BVU after approved work is completed.

Invoices and reports shall be sent to BVU and shall show detail of work completed. No payment will be issued prior to the receipt of the report.

28. Miscellaneous Charges. All costs associated with the work performed under this agreement are to be covered in the proposal pricing. BVU Authority will not accept any charges associated with travel, environmental compliance, material disposal or any other miscellaneous fees.

29. Performance Evaluation. During the term of the contract, BVU, in its sole discretion, will review the

Contractor’s performance approximately every three (3) months beginning on the effective date of the executed contract. BVU will determine the performance goals and factors. The performance evaluation is a component of future contract term extensions.

Page 21 of 34 Offeror’s Initials

ATTACHMENT C

Bid Worksheet

Unit Price of one (1) transformer as specified within IFB $ _____ __________

TOTAL PRICE IN WORDS: ____________________________________________________________

ESTIMATED START DATE: ____________________________

ESTIMATED COMPLETION DATE: ______________________

ESTIMATED DELIVERY DATE: __________________________

It is understood and accepted that, in accordance with the Infrastructure Investment and Jobs Act, all iron, steel, manufactured products, and construction materials used in the manufacture of the transformer, as requested within this IFB, must be produced in the United States. Affidavits as to the sources of all the iron, steel, manufactured products, and construction materials used in the transformer’s production will be provided to BVU Authority.

Name (type/print): Title:

Signature:

EAST – Transformer 69kV to 13kV Transformer

Page 22 of 34 Offeror’s Initials

ATTACHMENT D

PROPRIETARY/CONFIDENTIAL INFORMATION IDENTIFICATION

Name of Firm/Offeror:

Trade secrets or proprietary information submitted by an offeror shall not be subject to public disclosure under the Virginia Freedom of Information Act; however, the offeror must invoke the protections of §2.2-4342F of the Code of Virginia, in writing, either before or at the time the data or other material is submitted. The written notice must specifically identify the data or materials to be protected, including the section of the bid in which it is contained, as well as the page number(s), and state the reasons why protection is necessary. The proprietary or trade secret material submitted must be identified by some distinct method such as highlighting or underlining and must indicate only the specific words, figures, or paragraphs that constitute a trade secret or proprietary information. In addition, a summary of proprietary information provided shall be submitted on this form. The designation of an entire bid document, line-item prices, and/or total bid prices as proprietary or trade secrets is not acceptable. If, after being given reasonable time, the offeror refuses to withdraw such a classification designation, the bid will be rejected.

If there is no proprietary/confidential information to be identified, write “NONE.”

SECTION/TITLE PAGE

NUMBER(S)

REASON(S) FOR WITHHOLDING FROM

DISCLOSURE

Page 23 of 34 Offeror’s Initials

ATTACHMENT E

DEVIATION FROM SCOPE OF GOODS AND SERVICES

If Offeror’s bid includes deviations from the Scope of Services as provided within the IFB, Offeror must list Scope of Services paragraph and detail the deviation below.

Unless stated in this portion of the bid, all offerors will be considered to have fully accepted the Scope of Services.

If there are no deviations, write NONE.

Page 24 of 34 Offeror’s Initials

ATTACHMENT F

SIGNATURE SHEET WITH NON-COLLUSION CLAUSE

My signature certifies that I have carefully examined the Invitation for Bids and, if selected, will furnish all labor, materials, and equipment necessary to complete the work covered by the IFB…