Case Study 8

A Large Telecommunications Company.

A large telecommunications company required upgrades to the emergency power generator controls for one of their major metropolitan data centers. The existing ISO switchgear was commissioned in April 2000. The switchgear supported three Caterpillar 3516 2MW generators and supplied emergency power to three 1600A ATSs. The company expanded the facility and added an additional 2000A ATS and needed a fourth generator to support the n+2 requirement. The ISO price to add the fourth generator cubicle exceeded the company’s budget. Other problems included a failed touch screen and ISO’s lack of service.

The company contracted Prime Power Services to upgrade the existing system to meet all specifications as designated by the design engineers. The solution was to replace all controls with new digital controls including Woodward Easygens, Basler generator protection relays, and GE Max-on redundant RX3i PLCs. The new breaker section included Square D Master Pack breakers that were connected to the existing switchgear. The transfer of controls for each of the generators was completed successfully without interruption to the facility. With thorough planning, each generator was re-commissioned with the new controls and put back in service within two weeks