ABB Zenith Paralleling Switchgear (PSG) has become the leader in supplying solutions to simple and very complex systems due to its design flexibility and reliability. Providing customer facilities with reliable power switching systems since 1981. Since the inception of paralleling switchgear, many successful installations have been supplied with a focus on providing reliability. ABB PSG has evolved and adapted to the changing technologies in engine generator design, switchgear controls and monitoring systems. It reflects ABB's continuing commitment to reliable solutions for critical power applications.

Reliability - Systems in which part of the load is very critical may be best served by paralleling one or more generator sets. Under parallel operation all the generator sets are started at once. The first set to reach the proper parameters will assume the most critical portion of the load, with the remaining sets picking up lower priority loads. In addition, by using a load shedding application, the failure of one generator set will not interrupt power to the critical loads, as less important loads can be dropped off the line.

Flexibility - Paralleling power sources allows for a wide variety of choices in the generation, distribution and utilization of the system's power.