400 Hz Converter

Amendment / Modification

This amendment (0001) to solicitation N0017826Q6726 revises the Sole Source Justification and makes changes to the Statement of Work. Additionally, it extends the solicitation closing date.

• Section A - Solicitation/Contract Form: The Response Due Date has been changed from 10 Apr 2026 to 07 May 2026.
• Section B - Supplies or Services & Prices or Costs:
  • CLIN 0004 (Shipping) has been added.
  • CLIN 0002 (Installation & Startup Service) has been modified to clarify the description.
  • CLIN 0003 (Product Service Code) has been modified to change the description from 'Shipping' to 'Travel' and the Product Service Code from V112 to V211.
• Section E - Inspection and Acceptance: Inspection and acceptance locations for CLIN 0004 have been added.
• Section F - Deliveries or Performance: Delivery information for CLIN 0004 has been added, specifying delivery 18 weeks from the Date of Award.

The proposal submission deadline has been extended to May 6, 2026.

Statement of Work (SOW)

To establish a fully redundant 400Hz power system for mission-critical test and evaluation at the Naval Surface Warfare Center, Dahlgren Division (NSWCDD) laboratory.

• Provide one (1) Series SFC, 100kVA, Static Frequency Converter (Model SFCD00100NLJ) with specific electrical ratings (100kVA, 80kW, 480Y/277V input, 115V/400Hz output), NEMA 1 enclosure, and dimensions.

• The converter must utilize 12 Pulse PWM Solid-State Technology, Double Conversion Topology, and Galvanic Electrical Isolation.

• Key performance specifications include output frequency regulation of +/- 0.4Hz and voltage regulation of +/- 1%.

• The contractor must install the new SFC to create a redundant power configuration alongside the existing converter.

• This includes providing and installing a 225A 480V distribution panel and a 600A manual transfer switch.

• All installation, comprehensive testing, and coordination with the existing system must be completed within a strict five (5) consecutive day period.

• Startup services must verify independent system operation and coordination with the legacy system, ensuring seamless manual failover.

• Delivery: FOB to NSWCDD, Dahlgren, Virginia.

• Installation: Must be completed within a strict five (5) consecutive day period.

• Travel: Three (3) technicians required to Dahlgren, Virginia.

• One (1) year standard warranty for the Static Frequency Converter, including parts and on-site service.

• Government will provide a structure with 6 inches of rear clearance, verify existing cables, and position the SFC.

• Government will coordinate access and schedule installation services.

• Travel and scheduling must be coordinated with the technical point of contact.

Statement of Work (SOW)

To procure and install one (1) Series Static Frequency Converter (SFC), 100kVA, for the Naval Surface Warfare Center, Dahlgren Division (NSWCDD) to ensure operational capabilities.

• Provide one (1) Series SFC, 100kVA, model SFCD00100NLJ, with specific input/output voltage, frequency, phase, and enclosure requirements.

• The SFC must meet detailed technical specifications including:

  • 12 Pulse PWM Solid-State Technology
  • Double Conversion Topology
  • Galvanic - Electrical Isolation Converter Design
  • Output Frequency Regulation: 400Hz (+/- .4HZ)
  • Output Voltage Regulation: +/- 1% (Linear load)
  • Harmonic Distortion: < 3% (Linear Load)
  • Noise Level: 67 dB
  • Overload Capability: 110% Continuous, 125% 10 Minutes
  • Protection features including Over/Under Voltage Alarm, Output Short Circuit, etc.
  • LCD Real Time Status/Clock and Self-Diagnosis indicators.

• Remote Monitoring & Communications, Automatic Line Drop Volt Compensation, and 28VDC E&F Circuitry are NOT required.

• Deliver the SFC to NSWCDD in Dahlgren, Virginia.

• Provide installation services, including verifying power input specifications and reconnecting existing power cables.

• Ensure the SFC is operational per OEM specifications.

• Delivery to NSWCDD, Dahlgren, Virginia.

• Installation services to be performed at NSWCDD, Dahlgren, Virginia.

• Government will provide a structure with rear clearance, verify existing cables, and unload/position the SFC.

• Contractor travel is anticipated: three (3) technicians to Dahlgren, Virginia for five (5) days, in accordance with Federal Travel Regulations.

• Coordination with the technical point of contact is required for installation and access.

Solicitation / RFP / RFQ

This solicitation is for the procurement of a 400 Hz Converter. The specific model number is SFCD00100NLJ.

• One (1) unit of the Series SFC, 100kVA, Static Frequency Converter.

• Installation and startup services for the converter.

• Shipping of the converter.

• The contractor shall provide DoD unique identification or a DoD recognized unique identification equivalent, as per DFARS 252.211-7003.

• Pricing Arrangement: Firm Fixed Price for all items and services.

• Contract type is not explicitly stated, but the document is a solicitation (SF 1449).

• Period of Performance: 18 weeks from the date of award.

• Offer Due Date: April 10, 2026, 12:00 PM.

• Submission instructions are detailed within the solicitation, including requirements for electronic submission of payment requests and receiving reports via Wide Area WorkFlow (WAWF).

• Evaluation criteria are not detailed in the provided sections (Section M is empty).

• The acquisition is marked as UNRESTRICTED.

• The solicitation includes various FAR and DFARS clauses related to contract terms, conditions, invoicing, inspection, acceptance, and unique item identification.

• The government will inspect and accept supplies or services within 15 to 30 calendar days of delivery or completion.

• Deliveries to NSWC Dahlgren are accepted Monday through Friday, 7:00 a.m. to 2:30 p.m. local time.