Enhancing emergency power

02.12.09

Another constraint to be considered is the height of customized load control desired. Traditional paralleling systems use custom PLC programming and full interaction with deployment breakers to enable sophisticated load control. As integrated paralleling approaches modularize the paralleling functionality from the dispersal functions the load management tends to become more basic. An example of this is deferring from automatically drop generators off score at low load levels because of the lower level of facility load management integration. The integrated paralleling attitude also tends to rely on permissive and load shed functionality that is implemented at the transfer switch elevation versus internal to the distribution equipment. The traditional paralleling approach, through custom PLC logic, has the internal proficiency of adding or dropping generators, adding or shedding load, and anticipating possible N/E load additions such as a fire pump or elevator. Customizing trouble control logic

Source: Consulting-Specifying Engineer