The Superdome folks might want to get their money back on this one. An electrical device whose sole purpose was to prevent a power outage caused the Super Bowl blackout, the stadium's power company said Friday.
Officials of Entergy New Orleans said the relay device had been installed in switching gear to protect the Superdome from a cable failure between the company's incoming power line and lines that run into the stadium.
Company officials said the device performed with no problems during January's Sugar Bowl and other earlier events, but has been removed and will be replaced. All systems at the Superdome are now working and the dome will host a major Mardi Gras event Saturday night, said Doug Thornton, an executive with SMG, the company that manages the stadium for the state.
After Entergy New Orleans blamed the device, the manufacturers of the relay, S&C Electric Co. of Chicago, said a low “trip setting” on the equipment caused the partial blackout and that the outage would have been avoided if the operator of the relay device had set the trip threshold higher.