Description
The Grand River Dam Authority (GRDA) is soliciting quotations for a series of three‑phase pad‑mounted distribution transformers (often called “CBC Ammunition Transformers”) ranging from 150 kVA to 2 500 kVA. The contract requires delivery to GRDA’s transmission warehouse in Pryor, OK, and includes full technical documentation, testing certifications, and a 36‑month warranty (or 18 months post‑installation). Bids must be submitted online by early October 2026, with an extended Q&A window and a requirement for non‑collusion certificates on bids over $5,000.
• Provide pad‑mounted, liquid‑immersed transformers meeting IEEE C57.12 series specifications (13.8 kV primary, 480Y/277 V secondary, dead‑front, five HV tap positions).
• Supply all required accessories (fault indicator, temperature gauge, pressure‑vacuum gauge, drain valve, grounding lugs, lifting provisions) and deliver approved drawings in searchable PDF format.
• Meet environmental and durability requirements (IP‑65, ANSI 70 gray finish, corrosion‑resistant hardware, operation –20 °F to 104 °F, wind ≤ 90 mph, seismic Zone 1).