B032-26 15.5KV OUTDOOR VACUUM BREAKERS

Brownsville Public Utilities Board (BPUB) is soliciting bids for the procurement and delivery of five (5) 15.5 kV outdoor vacuum circuit breakers for the Titan Substation. The breakers must be three-pole, single-throw, free-standing, dead-tank, outdoor substation equipment rated for 1200 amps continuous current and 40 kA short-circuit interrupting capability. Equipment must meet or exceed ANSI C37.04, ANSI C37.09, ANSI C37.10, ANSI C37.11, ANSI C37.12, NEMA SG-4, and IEC 62271-100 standards with a maximum interrupting time of 3 cycles.

Key dates include a question submission deadline of March 20, 2026, bid submission deadline of March 25, 2026 at 5:00 PM CST, public bid opening on March 26, 2026 at 10:30 AM CST, bid evaluation period March 27 through April 22, 2026, final recommendations on April 23, 2026, and board approval on May 11, 2026. Delivery must occur within the last quarter of 2026 to the BPUB Warehouse at 1495 Robinhood Drive, Brownsville, TX 78521.

Bidders must demonstrate a minimum of five years in business providing similar equipment and must provide references from at least three similar utility entities. The equipment enclosure must be NEMA 4X stainless steel rated, with silicon rubber bushings rated for coastal applications and a minimum creepage distance of 24 inches. All breakers must include two independent trip coils, multi-ratio current transformers (1200/5 with C400 accuracy class and 2.0 rating factor), and complete spare parts packages as specified. The breaker must be rated for ambient temperatures from -30 degrees Celsius to +45 degrees Celsius and withstand wind loads up to 150 mph and seismic Zone 1 conditions.

Proposal submissions must include detailed technical drawings, performance data, schematic diagrams, outline dimensions, static and dynamic loads, bushing current transformer characteristics, and certification of ratings. All submittals must be made electronically via BidNet or in sealed envelopes addressed to Diane Solitaire, Purchasing Department. Successful vendors must execute a contract and furnish a supply bond, with liquidated damages of $500.00 per day per transformer for late delivery. Pricing must remain firm for 90 days from bid opening and for one year after purchase order award.