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Overhead Dual Voltage 7200/14400 V Transformers per Spec E88-4

Publication Date
12/03/2018 10:51 AM EST
Closing Date
01/03/2019 09:00 AM EST
Issuing Organization
City of Danville
Solicitation Number

Specifications include, but are not limited to: •Units shall meet all applicable ANSI standards with certication and test results available •Conventional protection •60 hertz •95 kV BIL •Primary no-load taps, 2-2.5% above and 2-2.5% below 7200 volts •Average winding rise shall be limited to no more than 650 C •Pressure relief valve meeting ANSI C57.12.20 •Single set of mounting brackets •Be filled with virgin “PCB-Free less 1-ppm” mineral oil dielectric fluid with a maximum allowable concentration of less than 1-ppm PCB. A letter from the manufacturer is required to certify that only “PCB-Free” oil is used in the manufacturing process. “Less than 1 PPM PCB” or “PCB-Free” shall be etched or otherwise permanently written on the nameplate. •15-75 KVA units shall utilize interlaced secondary windings. •Transformer tank heights (not including bushings) are limited to the following dimensions: 15 KVA- 27”, 25 KVA- 27", 50 KVA- 30", 75 KVA- 40", 100 KVA- 45", and 167 KVA- 45".

https://www.danville-va.gov/bids.aspx?bidID=2077 (opens in a new window)

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