Florida's Halifax Health Relies on Standby Power System from MTU Onsite Energy for New 10-Story Emergency...(outages tend to be of short duration&quo...),Health

Date:10/20/2009

outages tend to be of short duration," says James Sawyer, electrical supervisor, Halifax Health. "However, there's always the threat of bigger storms. In 2004, Hurricane Charley was a Category 4 storm that took out the entire grid, forcing us to run on standby power systems in older parts of the medical center campus from midnight until about 6:00 a.m. the next day." While the new MTU Onsite Energy standby power system has not yet been required to run during an extended outage, strong hurricanes are always a possibility. As testimony to the constantly looming danger, the new France Tower has been constructed to withstand a Category 5 storm, Sawyer says.

While there have been several standby power systems installed in the medical center as it has grown over the years, those systems are sized to provide only emergency power for operating rooms and intensive care units and for egress lighting to meet life-safety codes. The older standby generators weren't sized with the capacity to power the HVAC systems. Since current codes require patient evacuation if an area is without air conditioning for longer than 36 hours (a real possibility during a severe hurricane), Halifax Health officials sized the new 4.5 MW MTU Onsite Energy power system to supply all the loads in the new tower, including the HVAC.

System features three paralleled generator sets

The power system for the France Tower consists of three 1,500 kW MTU Onsite Energy generator sets operating in parallel for a total capacity of 4.5 MW. The generator sets are powered by the EPA Tier 2 MTU 12V4000 engine, noted for its high fuel efficiency and ability to accept full rated load in one step. The electrical loads are prioritized and segmented by up to eight automatic transfer switches per generator set. When an outage occurs, all three generator sets
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