0622-07-HV_Transformer-Reqts.xlsx

This is a Requirements List for a sole source procurement of a specialized high voltage pulse transformer. The Naval Surface Warfare Center Dahlgren Division (NSWCDD) seeks one unit of a Stangenes Industries, Inc. Model SI-000000 Pulse Transformer with Filament, part number SI-000000. The transformer must meet specific technical specifications including primary voltage of 46.6 kV at 6.8 kA, secondary voltage of 550 kV at 550 A, a turns ratio of 11.8, pulse width of 3.5 microseconds FWHM, rise time greater than 250 nanoseconds, and duty cycle of 0.044% at 125 Hz. Additional requirements include bifilar windings rated at 130 V and 15 A, and filament windings with primary at 120 V / 8 A and secondary at 64 V / 14 A. The transformer dimensions are approximately 24 inches wide by 24 inches deep by 33 inches high, with an impedance of 6.85 ohms on the primary and 1,000 ohms on the secondary. Only authorized resellers of Stangenes Industries are permitted to submit quotations.

The solicitation (N0017826Q6813) is issued as a Request for Quotation under FAR Part 12 simplified procedures for commercial items and is a sole source acquisition per FAR 6.103-1(b). The anticipated publication date in SAM.gov is July 1, 2026, with an anticipated closing date of July 15, 2026. The contract POC is James Embrey (540-498-5241, james.d.embrey3.civ@us.navy.mil). The procurement falls under NAICS Code 335311 and FSC/PSC Code 6120. Buy American Act requirements apply unless the Trade Agreements threshold is exceeded. The Stangenes Industries transformer is identified as the only commercially available U.S.-manufactured transformer capable of meeting the technical requirements and interfacing with the existing high-power modulator already fielded on Navy assets.