Northwestern University - Medium Voltage Distribution Feasibility Assessment

This project consisted of performing an assessment of the existing medium voltage (12.5KV-4160V) power distribution of the Evanston Campus’ Southwest Section. This area of campus serves predominantly student housing and administrative buildings, and is connected to the Southeast Section via the 4160V Tie system. MEPIS surveyed and documented the existing equipment and developed updated site plans and partial block one-line diagram showing the equipment, connections and buildings served.

In addition, MEPIS presented a conceptual design for the replacement of this medium voltage system, presented in the form of Revit drawings and a design narrative. Among the proposed ideas include the following: new underground vaults and electrical rooms at each location to move the equipment out-of-sight, removal of the 4160V system and convert the distribution to ComEd’s 12.5kV, proposed locations for new central emergency generators and associated distributions, new main-tie-main arrangements at central dormitories by using a second ComEd feeder, and new distribution panels and switchboards to distribute the loads at the quads in lieu of transformer secondary taps. The vaults were dimensioned and electrical equipment were given preliminary sizes in these conceptual drawings.