Specifications include, but are not limited to: •Units shall meet all applicable ANSI C57 standards•Windings to be oil immersed, self-cooled with a maximum average temperature rise of 650C at continuous load rating operation •Primary winding: Single-phase, 7.2/14.4kV for dual voltage, suitable for use on a 12.47/7.2 and 24.9/14.4kV (when switched) multi-grounded Y systems•Secondary winding: Single phase 240/120V center grounded •60 hertz•125kV BIL •Low-profile ANSI Type II configuration •Units shall be filled with virgin “PCB-Free” mineral oil dielectric fluid with a maximum allowable concentration of less than 1-ppm PCB. “Less than 1 PPM PCB” or “PCB-Free” shall be etched on the nameplate.•Units shall be equipped with a non-resettable device, that detects, provides external indication, and provides pressure relief for internal transformer faults. The approved device is manufactured by IFD Corporation or approved equal.•Units shall have a minimum efficiency as mandated by CFR Title 10 Chapter II Part 431 (DOE 2016 Efficiency Standards)•Units to be green Munsell 9GY 1.5/2.6 in color•Units shall meet tamper resistance requirements and provide provisions for pentahead bolt and padlock