REDUNDANT POWER SUPPLY, IN PARTICULAR FOR DATA CENTERS, AND METHOD AND COMPUTER PROGRAM FOR THE OPERATION THEREOF

A redundant power supply is provided having a first power supply, which is connectable to a busbar by a first tie switch and is disconnectably connected to a first load by a first line system, and having a second power supply, which is connectable to the busbar by a second tie switch and is disconnectably connected to the first load by a second line system, and having a third power supply, which is connectable to the busbar by a third tie switch and is disconnectably connected to a second load by a third line system, and having a fourth power supply, which is connectable to the busbar by a fourth tie switch and is disconnectably connected to the second load by a fourth line system. All of the tie switches are open during trouble-free operation.