Attach 1. Transformer Specification Sheet.docx

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Liquid Filled Transformer 819 RHS
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FA489726QC027
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This is a specification sheet for a 500 KVA liquid-filled service transformer required by the 819th RED HORSE Squadron for delivery to Mountain Home AFB, Idaho. The transformer must be a three-phase, pad-mounted unit with mineral oil insulation and self-cooled design compliant with ANSI C57.12.22 standards. Key technical specifications include: primary voltage of 12,470 volts delta-connected; secondary voltage of 208/120 VAC wye-connected, three-phase, four-wire; 5.75 percent impedance; 95 kV basic impulse level; K-4 factor rating; externally-operated manually type tap changer with two 2-1/2 percent above and two 2-1/2 percent below rated voltage adjustments; Class OA self-cooled design with 65 degrees C temperature rise; and Class AA cooling with 220 degree C insulation class and 150 degree C rise over 40 degree C ambient. The unit must include separate high- and low-voltage compartments, three primary switches (including internal oil-immersed gang-operated load break switches), primary overcurrent protection via oil-immersed bayonet-type fuse links, primary lightning arrestors rated 10 kV, spade lug secondary terminations, and standard ANSI accessories including dial thermometer, liquid level gauge, one-inch drain valve, and sampling device.

Delivery must be made to 1030 Liberator Street, Mountain Home AFB, ID 83648, during standard business hours Monday through Friday between 6 AM and 6 PM. The performance period runs from April 1, 2026 through December 30, 2026. All quotations must include shipping costs and any applicable environmental and fuel surcharges. Contractors must provide a minimum of 48 hours advance notice before delivery and coordinate with both the 819 RHS Project Manager (MSgt Broden Hafner) and the 366 High Voltage Shop Work Leader (Mr. Gregory Stevens). The contractor assumes responsibility for material transportation, site cleanliness, adherence to military installation security procedures, and worker welfare. All equipment shall be painted to Federal Standard 595B color 20095 with a factory-applied corrosion-resistant coating meeting ANSI standards.

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SPECIFICATION SHEET

Mountain Home AFB, ID 819 RHS Water Loop Transformer Material Package 15 January 2026

PART I – GENERAL REQUIREMENTS

1. GENERAL: The 819th RED HORSE Squadron requires one (1) 500 KVA service transformer to be delivered to Mountain Home AFB, ID.

1.1 The Contractor shall deliver the material to the address outlined in Part II. The material shall conform to the specifications provided in Part II. The origination of the material must be approved by the 819 RHS Project Manager.

1.2 Quotation shall include delivery, to include any applicable environmental and fuel surcharges.

1.3 Delivery will be in accordance with delivery schedule provided in Part II.

1.3.1. Coordination will be required with the 819 RHS Project Manager, MSgt Broden Hafner (broden.hafner@us.af.mil) as well as the 366 High Voltage Shop Work Leader, Mr. Gregory Stevens (gregory.stevens.8@us.af.mil).

1.4 All increases, decreases, or modifications to the requirements specified in this document must be directed by the Contracting Officer (CO).

2. Delivery Periods.

2.1. The delivery of material will occur during standard business hours on Monday through Friday between 6AM and 6PM. However, the times may fluctuate.

2.2. The performance period for this contract shall be between 1 April 2026 and 30 December 2026.

2.3. The Contractor shall be responsible for transporting the material to the construction site. The Government will make every effort to provide the Contractor the maximum amount of notice possible.

2.4. Notification of date and time of delivery will be made as early as possible for all materials. A minimum of 48 hours prior to the required delivery date, the Contractor will contact the 819 RHS Project Manager to coordinate the date/time and specific location of deliveries.

2.5. In the event of adverse weather events prohibiting safe delivery of material, the 819 RHS Project Manager will contact the contractor to coordinate rescheduling of delivery within the following 48 hours.

3. Military Installation Requirements.

3.1. All mud, dirt, debris, foreign objects, trash, or spills caused by the contractor (including Sub-Contractors) on a street or parking lot, used as access to the work site or staging area shall be cleaned off the same day or as soon as practicable or requested by the CO.

3.2. The Contractor shall immediately report to the CO to discuss any issues or incidents which may indicate potential imminent risk to Government personnel or the environment. Following the notification, the Contractor shall be available to the CO for instructions regarding remediation of the release. Contractor should be aware of “you spill, you dig” policies, which means if you are the cause of the spill then you are responsible for the cleanup. To report a release or spill, contact the CO immediately.

3.3. The Contractor shall follow existing security procedures and instructions applicable to MHAFB. The Contractor is responsible for providing required documents in a timely manner to maintain the submitted work schedule. Delays caused by documents not being submitted early enough are the responsibility of the Contractor.

3.4. The contractor shall adhere strictly to existing security procedures and instructions applicable to accessing MHAFB. Contractor personnel attempting to access MHAFB shall hold a current, valid identification (ID). The U.S Government shall not be liable for delays resulting from pass coordination/approval. Contractor shall allot time into its schedule for obtaining base access.

4. Emergency Situations.

4.1. Installation access may be restricted at any time. Restricted access is reserved for emergency actions, exercises, or increased installation security.

5. Contractor Responsibility.

5.1. The Contractor is responsible for the wellbeing of their workers. The Government will not be responsible for supplying food or water to the Contractor’s workers. The Contractor should bring enough food and water for his/her workers to last the entire delivery period.

5.2. The Contractor shall provide the name and phone number of a supervisor that can make decisions for the Contractor and who is responsible for the performance of the work. The supervisor shall be designated in writing when the contract is awarded and must always be available during work hours. The supervisor shall read, write, and speak fluent English. Additionally, the supervisor shall have sufficient technical knowledge with regard to the requirements prescribed in this document. The identified Government representative shall have the right to request a replacement for any individual not deemed acceptable to the Government at any time.

PART II – Material Specifications

1. GENERAL: The 819th RED HORSE Squadron requires 2 different types of material to construct a Water Loop at the Mountain Home AFB CSTR Site.

1.1. This delivery shall be coordinated with the 819 RHS Project Manager and 366 CES High Voltage Shop Work Leader.

2. TRANSFORMER MINIMUM SPECIFICATIONS: The service transformer must (at a minimum) comply with the following salient characteristics:

2.1. Physical Characteristics

2.1.1. Liquid-filled Transformers: ANSI C57.12.22; three-phase, pad mounted, mineral oil insulation, self-cooled transformer unit.

2.1.2. Capacity: 500 KVA

2.1.3. Transformer:

2.1.3.1. Separate high- and low-voltage compartments.

2.1.3.2. Impedance: 5.75 percent, or ANCI Standard.

2.1.3.3. Basic Impulse Level: 95 kV.

2.1.3.4. Primary taps: Externally-operated manually type tap changer. Two 2-1/2percent above and two 2-1/2 percent below rated voltage.
2.1.3.5. Cooling and Temperature Rise: ANSI C57.12.22; Class OA. 65 degreesC, self-cooled.

2.1.3.6. K factor rating:

2.1.3.6.1. K-4 for systems with 50% connected non-linear electronic loads. General transformers.

2.1.4. Primary Voltage: 12,470 volts, delta connected; Primary Voltage: 12,470 volts, delta connected

2.1.5. Secondary Voltage: Wye connected, 208/120 VAC, 3 phase, 4 wire

2.1.6. Accessories: ANSI C57.12.22 standard accessories and dial type thermometer,liquid level gauge, one-inch drain valve and sampling device.
2.1.7. Cooling and Temperature Rise: ANSI/IEEE C57.12.01; Class AA. 220 degree Cinsulation class with 150 degree C rise over 40 degree C ambient.
2.1.8. Primary Terminations: Bushing wells to ANSI/IEEE 386; provide six for loop feed.Include bushings for insulated load break connectors.

2.1.9. Three primary switches. Primary Switching: Internal oil-immersed gang-operated load break switch.

2.1.9.1. A-left side switch for normal incoming.

2.1.9.2 B-right side for either feed thru or possible normally open back feed capability .

2.1.9.3 Primary switch for transformer.

2.1.10. Primary Overcurrent Protection: Oil immersed, wet well, bayonet- type fuse link. Accessible from exterior front of transformer cabinet.

2.1.11. Secondary Terminations: Spade lugs.

2.1.12. Other Accessories: Primary lightning arrestors (10 KV).

2.1.13. Finish: All pad-mounted equipment shall be painted to meet ANSI standards for corrosion resistant coatings. Color of all equipment shall match Federal Standard 595B, color 20095. This coating shall be a factory finish.

2.1.14. Switch: (3) 2 Position LBOR – isolating switch for transformer Line A & B

3. Specifics.

4.1. Shipping must be included in the quotation.

4.1.1. Contractor shall deliver to 1030 Liberator Street, Mountain Home AFB ID, 83648 .1.2. Delivery timeline will be within timeline provided in quote, upon final award of the contract

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