Denton Ionwave #9190

Denton seeks 100 kVA station service voltage transformers

The City of Denton is seeking bids for utility station service voltage transformers for its 138 kV transmission system. - Government buyer: City of Denton, through Denton Municipal Electric (DME) and the Purchasing office. - Requested product: 12 100 kVA station service voltage transformers, with the quantity stated as a five-year estimate. No separate quantity is specified in the technical specification. - OEM and model references: ABB Kuhlman equivalent model SSVT-650, catalog number L99N656100C. Compatible grounding-lug examples named are Burndy YA28A5 and Anderson VACL4012BN; no bidding reseller is identified. - Key electrical requirements: 145 kV maximum system voltage, 80,500 V rated primary voltage, 650 kV BIL, 0.2% minimum accuracy, 400 VA burden, 275 kV power-frequency withstand, and 60 Hz operation. Minimum creepage and strike distances are 147 in. and 49 in., respectively. - Construction and compliance: Units must be completely assembled and tested, hermetically sealed, and built with corrosion-resistant components. Requirements include glazed porcelain insulators, specified terminals and grounding connections, stainless-steel nameplates, and sealed, weather-tight secondary compartments. Equipment must comply with applicable EEI, NEMA, IEEE, and ANSI standards, including ANSI C93.1, ANSI C93.2, and IEEE C57.13. - Submittals, testing, and warranty: Bidders must provide product literature, outline drawings, nameplate data, rating verification, proposed manufacturer/catalog number, and delivery schedule. Factory testing information and certified test reports are required; additional evaluation credit may be given for testing that substantially exceeds the minimum requirements. The warranty must cover defects for at least 12 months from first energization. - Delivery: FOB Destination to the Spencer Utility Site or another DME substation as directed. - Other named manufacturers: Burndy and Anderson are cited as examples for compatible grounding lugs; they are not identified as transformer manufacturers or bidders.

Description

The City of Denton is soliciting bids to supply completely assembled and tested station service voltage transformers for use on 138 kV transmission systems. Units are to be priced FOB Destination and delivered to the Spencer Utility Site or other Denton Municipal Electric substations as directed. The solicitation includes technical design, standards, testing, documentation, warranty, and delivery requirements. Sealed submissions must be submitted through IONWAVE or by hard copy; email submissions are not accepted.

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