Terminal Elevator Expansion Electrical Project RFP

Description: The installation of a 2750 kVA, 5 kV primary to 480V secondary pad mounted liquid filled transformer with FR3 fluid that has been procured by North Dakota Mill. The electrical contractor shall provide the concrete pad for the transformer. The 2750 kVA transformer will be connected to existing 5kV switchgear via a new 5 kV armored cable and new cable tray. The 480V secondary will be connected to new 480V, 4000A, 3 phase, 3 wire switchboard with distribution sections to feed (2) new 200 hp VFDs for the elevators and 800A motor control center, and various drag and conveyor motors. The new 4000A switchboard and VFDs will be located in the new MCC Room in the Terminal Elevator. The electrical controls will update existing Allen Bradley PLC for VFD controls, slide gate control, and airlocks for the Terminal Elevators and drag conveyor with the electrical contractor providing (2) empty 2" conduits for control wiring by others. The electrical controls shall also in corporate the monitoring of the BS&B controls into the existing PLC.