The Rotary Uninterruptible Power Supply system (UPS) is the perfect solution for critical applications since failures in power supply could be catastrophic to the business. They use flywheels and/or batteries as an energy storage device which provides short-term energy to the critical load in the event of a power supply loss. These devices also act as a buffer against power surges, spikes and dips.
They are traditionally used in conjunction with stand-by diesel generators, where the storage device provides the back-up power for the brief time period required for the alternative supply to be brought on-line.
Rotary systems are used where the power system being supported is large and the potential for faults is high, due to their robust construction.