Transformers

Description of Services: Replace Live-Front and Unfused Transformers, Cannon AFB, NM. Remove and dispose of 16 pad-mounted transformers (See Appendix 1 & 2 in attached Statement of Work) in accordance with IEEE 799-1987, CAFB & MAFR Civilian Contractor Environmental Guide-2018, and UFGS 26 00 00.00 20 and UFGS 26 12 19.10. The existing concrete pads for transformers shall remain and be reused. The Contractor shall remove and dispose of existing transformers in accordance with UFGS 02 41 00. The contractor shall install new transformers that meet the following specifications: New transformers shall utilize environmentally friendly oil (i.e. FR3 or equivalent) and dead front fused (bay-o-net style or equivalent). The high and low voltage compartments shall be located side by side, separated by a steel barrier. When facing the transformer, the low voltage compartments shall be on the right. Terminal compartments shall be full height, air-filled, with individual doors. The high voltage door fastenings shall not be accessible until the low voltage door has been opened. Dead front bushings shall be either universal wells or one-piece integrated for use with separable connectors. Bushings shall be externally clamped and front removable. Switch to be 3-position for use on an alternate feed system with feed A feed B, or off. Switch to be 4-position “sectionalizing” type for use on an extended radial or loop-feed system with feed A, feed B, isolated-from-either-side, or through-feed to both sides. Switch to be 2-position switches to be used as “sectionalizing” switches on extended radial or loop-feed systems with feed-from-the-left, feed A, isolated B, or through-feed-to-both sides Assume that additional primary wiring will need to be pulled to each location from the existing source. Tests shall be conducted in accordance with the provisions of ANSI C57.12.90 and UFGS 26 12 19.10.

Division 26 -

Electrical, Medium-Voltage Transformers, Low-Voltage Transformers.