XFR POL 00680

Burlington Electric Department (BED) is requesting quotes for two (2) single-phase, 60 Hz, mineral oil immersed, self-cooled, 65-degree Celsius rise, overhead-type distribution transformers. The transformers must comply with ANSI/IEEE standards C57.12.00, C57.12.20, C57.12.31, C57.12.90, and C57.91. The nominal high voltage rating shall be 13800 Grd Y/7970V with a 95 kV BIL, and the low voltage rating options include 120/240V, 277V, or 240/480V, all at 30 kV BIL. Impedance voltage shall range from 1.60% to 2.25% for the 15-167 kVA range.

All transformers must undergo comprehensive testing including no-load losses at 20-degree Celsius/100% voltage, total losses at 85-degree Celsius/100% voltage, percent impedance at 85-degree Celsius, exciting current at 100% rated voltage, and full wave voltage impulse testing. Manufacturers must provide certified test reports by serial number prior to shipment, signed by authorized factory personnel. The transformers must be PCB-free as indicated on the nameplate, with connectors and terminals accommodating aluminum or copper conductors.

Key delivery and submission requirements include: Quotation due by February 6, 2026, 5:00 PM EST; delivery required no later than February 6, 2026; all responses must be uploaded to BED's secure website using unique login credentials; outline drawings showing transformer dimensions and one-line diagrams are mandatory; and failure to include required information will result in the RFP being deemed invalid and not evaluated. All bids become the property of Burlington Electric Department and are open for public viewing after contract award.

Vendors must provide warranty information, location of nearest manufacturer service shop, average and guaranteed maximum losses, X/R ratio, percent positive impedance, and description of tank corrosion minimization methods. BED reserves the right to accept or reject any or all proposals, negotiate separately with any source, assess financial penalties for failure to meet quoted losses via BED's loss evaluation formula, and cancel orders if goods are not shipped as directed. Delivery is F.O.B. destination with freight allowed to BED dock (hours 7:30 AM to 2:30 PM, Monday-Friday).