Substation power transformer supply and delivery
SUBSTATION POWER TRANSFORMER, Solicitation 250325, issued by Mason County PUD No. 3.
At a glance
Mason County PUD No. 3 is seeking a three-phase 60 Hz outdoor oil-immersed substation power transformer rated for Seismic Zone 3 operation. The transformer must meet specific electrical and mechanical requirements with thermally upgraded insulating materials and a 65°C temperature rise rating. Bid deadline is October 21, 2026.
Key facts
- Issuing agency
- Mason County PUD No. 3
- Solicitation number
- 250325
- Posted
- Aug 20, 2026
- Response deadline
- Oct 21, 2026, 6:00 PM EDT
- Place of performance
- Mason County, WA
Official description
Issued by Mason County PUD No. #3. Reference #M2-2026. The intent of this request is to provide the District with a substation power transformer meeting the electrical and mechanical requirements specified herein.
The transformer supplied under this specification shall be an ONAN/ONAF1/ONAF2 three-phase 60 Hz, outdoor, oil immersed, substation power transformer suitable for operation in Seismic Zone 3. All insulating components, oil paper, wire, and enamel shall be made of thermally upgraded materials, which are all compatible for today's industry standard 65°C rise above a maximum 40°C ambient transformer. Project closes Oct 21, 2026 3:00 PM PDT.
Respond to this bid
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