120 KVA 400 Hz Vertical Solid State Frequency Converter

Solicitation / RFP / RFQ

This document is a solicitation (Request for Quote - RFQ) for a 400 HZ Transformer. The USCG Base Honolulu Contracting is issuing this solicitation.

• The primary deliverable is one (1) 400 HZ Transformer.

• The solicitation issue date is February 6, 2026.

• The award/effective date is February 25, 2026.

• The offer due date is February 20, 2026, at 12 PM HST.

• Payment will be made via the IPP system and electronically by the USCG Finance Center.

• Offerors must submit their quote via email to micah.j.sandusky@uscg.mil.

• The solicitation incorporates by reference FAR 52.212-1, 52.212-4, and 52.212-5. These clauses are attached.

• This acquisition is set aside 100% for Small Business.

• The North American Industry Classification Standard (NAICS) code is 335311, with a size standard of 800 employees.

• Offerors need to complete blocks 17A, 23, 24, and 30 on the SF1449 form.

• Standard Form 1449 (Rev. 11/2021) is the prescribed form for this solicitation.

Solicitation / RFP / RFQ

This specification details the requirements for a Solid State Frequency Converter (SSFC) designed to power commercial and military aircraft loads, specifically the U.S. Coast Guard C-130J aircraft, with MIL-STD-704E power quality at 400 Hertz, 115/200 volts AC, 3-Phase, 4 Wire, from a utility power supply. The SSFC must be fully compatible with the C-130J aircraft without generating error messages.

• Power Quality: MIL-STD-704E at 400 Hz, 115/200V AC, 3-Phase, 4 Wire.

• Compatibility: Fully compatible with U.S. Coast Guard C-130J aircraft.

• Physical Constraints: Must fit through existing door opening (less than 80” H and 5’-10” W), with a stand height no taller than 18". Disassembly is not allowed except for the stand.

• Environmental: Operable from -40°C to 52°C, 10% to 100% relative humidity, and at altitudes up to 6,600 feet without derating. Unit to be installed indoors.

• Life Expectancy: Minimum 20-30 years, with a Mean Time Between Failures (MTBF) of 24,000 hours.

• Noise Level: Not to exceed 65 dBA at 4.5 feet height and 3 feet from the unit.

• Electromagnetic Interference: Must meet MIL-STD-461B requirements.

• Electrical Characteristics:

  • Input: 480V nominal, 3-Phase, 60 Hz (±10%), 135 Amps max.
  • Output: 120 KVA, 115/200V RMS, 3-Phase, 400 Hz (±0.1 Hz), 0.8 lagging power factor, 347 Amps max.

• Overload Capability: 125% for 10 min, 150% for 30 sec, 200% for 10 sec.

• Monitoring: Minimum three indicator lights (Fault, Functioning/Power, Output Contactor On), alphanumeric display or RS-232 output for detailed parameters, and digital panel meters for voltage and current.

• Diagnostics: Self-diagnostic tests upon startup, fault indication via lights or digital readout.

• Maintainability: Mean-time-to-repair (MTTR) no greater than 30 minutes at module level; no preventative maintenance required.

• Not specified in this document.

• Manufacturer Compliance: Known compliant manufacturers include Unitron, ITW, and FCX. If not listed, a signed letter from an authorized manufacturer representative stating full compliance to C-130J 400 Hz requirements is mandatory.

• Submittals: Manufacturer's data, warranty, operation/installation/maintenance manuals, shop drawings (dimensioned, schematic, wiring), and certified test reports are required.

• Testing: Factory tests include operational checkout, no-load losses, load tests (0%, 50%, 100%), burn-in (16 hours), and specific performance tests. COTR notification and potential witnessing are required.

• Commissioning: On-site commissioning and testing with the C-130J aircraft to verify power is not rejected.

• Not specified in this document.

• Applicable Military Standards include MIL-STD-704E, MIL-STD-461B, MIL-STD-16878D, MIL-W-586-IB, MIL-I-8500. Other publications include NFPA 70, IEEE standards, NEMA standards, and ANSI standards.

• Warranty period is one year from acceptance.

Form / Attachment / Pricing Sheet

This document is a material list with salient characteristics for the "400 Hz Workorder" related to the ASBP 1790 opportunity. It details specific equipment and components required for the project, providing essential specifications for potential bidders.

• 120 KVA 400 Hz Vertical Solid State Frequency Converter: Requires specific input (480VAC, 3-phase, 60 Hz) and output (115/200 VAC, 3-phase, 400 Hz, 347 amp) specifications. Must be floor-mounted on a stand and fit through a doorway (< 80” H x 5’-10” W). On-site commissioning and final testing with a C-130J aircraft are required. Compatibility with U.S. Coast Guard C-130J aircraft is mandatory, with specific compliant manufacturers listed (Unitron, ITW, FCX) or requiring a manufacturer's letter of compliance.
• 400 Hz Motorized Cable Reels (3 total): Two for HH 65, one for C-130J. Each requires 100' of 400 Hz cable and plug, factory-tested. Operates on 120VAC, 60 Hz. Specific compliant models are referenced.
• 28V DC Motorized Cable Reel (1 total): For HH hangar side. Requires 100' of DC cable and plug, factory-tested. Operates on 120VAC, 60 Hz.
• 400 Hz Cable, Plug w/ Pushbutton Controls (3 total): 100' long, 260 amp, single jacket 400 Hz power cable with molded nose contact section and scuff jacket. Includes four push buttons for reel control (on/off, up/down) with level wind and electronic payout/rewind.
• 28 VDC Cable, Plug w/ Pushbutton Controls (1 total): 100' long, two #4/0 AWG single conductor power wires, complying with MIL-C-5756 and MIL-C-7974D. Includes a 28.5 VDC connector.
• Load Point Control Unit (LPCU) for 400 Hz cable reels (3 total): Controls power up to 90 kva, monitors voltage and overload, and includes fault indicators. Specific compliant products are listed.
• Enclosed Circuit Breaker (1 total): 175 amps, 600 V, NEMA 1, min. 65K AIC, surface mounted.
• Commissioning: Includes start-up, training, load bank testing, and actual C-130J load testing. Requires submission of reports and O&M manuals.

This document is critical for bidders to understand the specific technical requirements and quantities of equipment needed for the 400 Hz power system upgrade. It outlines detailed specifications, compliance requirements (especially for C-130J aircraft compatibility), and necessary commissioning services. Bidders must ensure their proposed equipment meets or exceeds these salient characteristics and that they can provide the required commissioning and documentation.