Ground Support Unit

2026-11-03

DESCIPTION : THIS NOTICE IS A REQUEDT FOR INFORMATION ONLY . The RFI is issued solely for information and planning purposes – it does not constitute as a Request for Quote ( RFQ ) or a promise to issue an RFQ in the future . This RFI does not commit the Government to contact for any supply or service whatsoever . Responses will be treated as information only and will not be evaluated as a proposal . Further , the Government is not at this time seeking quotes and will not accept unsolicited quotes . A return response from the government regarding RFI submissions is not guaranteed . The RFI respondents are advised that the Government will not pay for any information or administrative costs incurred in response to this RFI ; all costs associated with responding to this RFI will be solely at the interested party ’ s expense . Not responding to this RFI does not preclude participation from future announcements or contracts . Respondents should indicate which portions of their response are propriety and should mark accordingly . NOTE : This RFI is not associated with any previous or ongoing RFQs or Fair Opportunity Proposal Requests issued by the DAF . BACKGROUND : The 420th Instrumentation Group has a requirement for a Ground Power Unit ( GPU ) capable of supporting aircraft start - up operations . GPU needs to have the capability of producing at least these specifications :- 600 Amps at 28VDC - adjustable output voltage of 24 - 31 . 9 VDCInput • Voltage range : 3 x 400 V - 10 /+ 15 % 3 x 460 V - 10 /+ 20 %• Frequency : 50 / 60 Hz 5 %• Rectification : 6 pulse • Line current : 29 A • Power factor : 0 . 91 • Inrush current : None , soft startOutput • Current : 600 A continuously ( can be limited to 400 A uponrequest )• Engine Start Capability : 28 V @ 2000A • Voltage : 28 VDC ( or as adjusted - " 24 - 31 . 9VDC "• Ripple : less than 2 % at full load • Voltage regulation :< 0 . 5 % from no load to full load • Voltage compensation : 3 V @ 600 AManual or voltage feed - backvia interlockWeight • Fixed unit approx . 120 kg ( 264 lbs .)• Mobile unit approx . 240 kg ( 582 lbs .) Efficiency • Overall efficiency : 0 . 87 • Stand by losses : 130W • No load losses : 330WEnvironmental • Operating temperature :- 40 ° C to + 56 ° C (- 40 ° F to + 135 ° F )• Relative humidity 10 - 100 % non condensing • Noise level < 65 dB ( A )@ 1mOverload ratings600 A 400 A • 1200 A 800 A for 30 seconds • 1800 A 1200 A for 10 seconds • 2100 A 1400 A for 5 seconds • 2400 A 1600 A for 2 secondsMiscellaneous • MTBF ( proven ): 100 , 000 hours • Ventilation system : min . 25 , 000hours • MTTR : max . 20 minutes • Communication : TCP / IP , USB - mounted on a towable trailer that will raise the power supply and cables 18 off the ground for safety reasons . All responses should include your commercial solution and be directed to the point of contact Jaymi Taplin , jaymi . taplin @ us . af . mil , and Christina Day , christina . day . 6 @ us . af . mil via email .

California

2026-05-10