Lone Star College - North Harris Utilities Replacement
Owner: Lone Star College
Electrical Engineer: Infrastructure Associates
The North Harris campus is a 250-acre development for the Lone Stare College System. The campus has several buildings on it including the health professions building and advanced workforce center, two main central plants, and multiple classroom buildings.
This campus owns the 15 kV electrical distribution system, with over 2,500 linear feet of overhead power lines. The campus has been experiencing more than normal power outages due to overhead lines exposure and weather condition. The owner desired to replace the overhead service with underground distribution to reduce the power outage. IA provided electrical construction documents to design a new 15 kV underground electrical distribution system and replace all existing pole mounted switches with pad mounted switchgears. Primary (15 kV) power to all existing pad mounted transformers serving eight building in the campus were refed and existing transformers were reused. No secondary (480 Volt) distribution changes were made for the existing buildings. A new 5 MW utility (CPE) transformer supplied required power for the campus. Infrastructure Associates also assisted in communication and meetings with Centerpoint Energy power company. Additionally, IA provided the civil engineering plans and profiles drawings necessary so that routing and installation would not conflict with existing underground utilities.