Specifications include, but are not limited to: Quantity: • 150kVA – Two (2) transformers • 300kVA - One (1) transformer Frequency: • 60 Hz Primary Voltage: • 7.2/12.47kV Grounded Wye Secondary Voltage: • 277/480V System Voltage: • 12.47kV phase-to-phase nominal Standards: • C57.12.00 IEEE General Requirements for Liquid Immersed Distribution, Power and Regulating Transformers • C57.12.25 IEEE Standard Requirements for Pad-Mounted, Compartmental-Type, Self-Cooled, Single-Phase, Distribution Transformers with Separable Insulated High Voltage Connectors • C57.12.28 Pad-Mounted Equipment Enclosure Integrity • C57.12.34 IEEE Standard Requirements for Pad-Mounted, Compartmental-Type, Self-Cooled, Three-Phase, Distribution Transformers • C57.12.90 IEEE Standard Test Code for Liquid-Immersed Distribution, Power and Regulating Transformers • ASTM D3487 Standard Specification for Mineral Insulating Oil Use in Electrical Apparatus • US DOE – 2016, or newer, US Department of Energy efficiency standards for liquid-immersed medium-voltage distribution transformers Construction: • All transformer units shall be newly constructed and manufactured in North America. Repaired, rebuilt, or remanufactured units will not be accepted
