MAFBTransformers_Specification.pdf

This document is a detailed Transformer Specifications sheet for Malmstrom Air Force Base (AFB), Montana, outlining comprehensive technical requirements for brand new transformers. The specification covers multiple three-phase transformer sizes ranging from 75 kVA to 1500 kVA, with specific technical parameters including primary and secondary voltage configurations, cooling class (KNAN), frequency (60 Hz), and elevation design for 1000m above sea level. Key technical specifications include copper conductors, NEMA TR1 standard compliance, 15 kV class, dead front primary configuration, loop feed design, and a 100 Amp 5-position tap changer. Additional details cover inserts, load-break switching, primary arresters, overcurrent protection, and various gauges and fittings. The document also specifies a standard 1-year warranty and includes requirements for notifications, tank accessories, and packaging.

The specification sheet includes a table listing transformer sizes with their corresponding primary and secondary voltages, recommended number of spares on hand, and the number of facilities backed up by each transformer size. The transformer configurations are designed for reliability and flexibility, with options for different voltage ranges and capacities to support various facility power requirements at Malmstrom AFB. The specifications align with the related Sources Sought notice for the MAFB Transformers contract, which is seeking small business sources for power and distribution transformer manufacturing under NAICS code 335311.