The project includes new transformers, panel boards, transfer, paralleling switchgear, associated control systems, construction of a support platform for the generators, switchgear, and a platform for fuel storage tanks and retaining walls.
The plant consists of three 1,750 kW, 5-kV engine generators to provide an N+1 configuration, which offers limited redundancy so that demand load can be met with one generator.
The 5-kV supply system consists of three, pad-mounted 34.5 kV – 4,160Y/2,400V service transformers, each providing separate services to three discrete, 5-kV switchgear busses in the switch-house. The alternate source for each transfer pair is fed from the new 5-kV circuit breakers in the gear.
The switchgear has four other circuit breakers, three of which feed the alternate source connections of the transfer pairs. The fourth feeds a permanent 2,000-kW load bank.
This project further includes the removal of three spans of existing 35-kV overhead power lines and four existing power poles. New underground duct banks with new 35-kV feeders replace the removed overhead construction.
A new concrete pull-vault was installed near the new structure and a new, 35-kV, pad-mounted, five-way distribution switchgear was installed to re-feed the three existing transformers.
Thirty-six thousand gallons of fuel storage supports the facility load for 96-hours. There is a sub-base day-tank integral to each engine-generator and four large fuel storage tanks are located in the spaces beneath the platform that support the generator plant.