Transformer Specs.docx
DOCX document 19 KB Posted
- Attached to
- FY26 750kVA 3-Phase Transformer
- Solicitation number
- FA440726Q1000
About this file
This is a technical specification document for a 750 kVA three-phase pad-mount transformer required by the Department of the Air Force Air Mobility Command under Solicitation Number FA440726Q1000. The transformer must meet DOE 2016 efficiency standards and utilize Envirotemp FR3 insulating fluid. High-voltage specifications include 12470GY/7200 volts at 15 kV class with 95 kV BIL, dead-front primary termination, loop feed configuration, and a 5-position tap changer with 2.5% taps above and below nominal. The transformer requires six 200-amp Cooper bushing wells with removable studs, six 15 kV load-break inserts, three 15-38 kV 300A loadbreak switches, and three Varistar elbow arresters at 15 kV class. Overcurrent protection includes bayonet fuses in series with partial-range current-limiting fuses and three copper bayonet fuse holders.
Low-voltage specifications designate 480Y/277 volts at 1.2 kV class with 30 kV BIL, live-front secondary termination, and radial feed configuration. The unit includes four integral aluminum 12-hole spade bushings, a magnetic liquid level gauge, pressure/vacuum gauge, dial-type thermometer, drain valve with sampler, fill plug, pressure relief device (50 SCFM), and nitrogen blanket. Cabinet construction utilizes 304L stainless steel for the sill, sides, and tank base with Federal Spec Sherwin Williams 6006 black bean brown paint. The solicitation is a small-business set-aside using FAR Part 12 procedures with evaluation criteria of Lowest Price Technically Acceptable (LPTA) and a single award anticipated. Offers must be received by 10:00 A.M. CST on June 5, 2026, from vendors with active SAM registration. The NAICS code is 335311 (Power, Distribution, and Specialty Transformer Manufacturing) and PSC code is 6120 (Transformers: Distribution and Power Station).
View the file
Other files
Show all 11
On GovTribe
Work with this file
- Download the original file
- Contacts named in this file
- Similar government files
- Ask GovTribe AI about this file
Text version
750 kVA pad mount transformer Bldg. 470 kVA - 750 kVA 3 Phase Pad-Mount Transformer Insulating fluid - Envirotemp FR3 Efficiency Standard - DOE 2016 High Voltage - 12470GY/7200 Volts High Voltage kV Class - 15 kV Class High Voltage kV BIL - 95 kV BIL Primary Termination Style - Dead Front Primary Feed Type - Loop Feed Taps - 2 - 2.5% taps above and 2 - 2.5% taps below nominal Tap Changer - 5-position tap changer Tap Changer Switch Location - Frontplate HV Compartment High Voltage Bushings - 200 amp Cooper bushing wells with removable studs (Quantity: 6) Primary Ground Bushing Selection - Combined H0X0 Bushing High Voltage Inserts - 15 kV, 95 kV BIL load-break inserts (Quantity: 6) Loadbreak Switch(es) - 15-38 kV, 300A 2-Position (Quantity: 3) Loadbreak Switch Location - Frontplate HV Compartment High Voltage Arresters - Varistar elbow arresters, 15 kV class, distribution class 15 kV (Quantity: 3) Overcurrent Protection Bayonet Fuses in series with Partial-Range Current-Limiting Fuses (Quantity: 3) Expulsion fuses Bayonet fuses - (Quantity: 3) Bayonet Holder - Copper Bayonet Fuse Holder (Quantity: 3) Low Voltage - 480Y/277 Volts Low Voltage kV Class - 1.2 kV Class Low Voltage kV BIL - 30 kV BIL Secondary Termination Style - Live Front Secondary Feed Type - Radial Feed Low Voltage Bushing Location - LV Frontplate (seg 1) Low Voltage Bushings - Integral aluminum 12-hole spade bushing(s) (Quantity: 4) Bushing Supports - Standard LV Bushing Support Assembly Cabinet hardware - Penta-head cabinet door bolts Cabinet Types - IEEE/ANSI Infrared Viewing Windows - No Window Required Bushing Layout - K 4.5 Loop feed per IEEE C57.12.34-2022 Figure 11 minimum dimensions (without bails) Special Paint - Federal Spec Number Sherwin Williams 6006, Black Bean Brown Cabinet Sill Construction - 304L Stainless steel cabinet sill Cabinet Sides Construction - 304L Stainless steel cabinet sides Tank Base Construction - 304L Stainless steel tank base FM / UL Certifications - UL Listed Liquid Level Gauge - Magnetic liquid level gauge Pressure Vacuum Gauges - Pressure/vacuum gauge Thermometer - Thermometer, dial-type Other Fittings - Schrader valve Drain Valve - Drain valve with sampler in LV Compartment (1") Fill Valve - Fill plug in LV Compartment Pressure Relief Device - Pressure relief device, 50 SCFM Ground Pads - Two-hole ground pads (Quantity: 3) Nitrogen Blanket - Yes Cover Bolted cover Gauges Location Inside Main Cabinet on Front Plate
File details come from the government source that posted it. Updated .