6000 HP Synchronous Soft Start



About The Project

When starting equipment for a 50-year-old air compressor was evaluated, it was determined to be unreliable with a high arc flash hazard level. Furthermore, the across the line starting technique was spiking demand charges from the utility.

The owner of the equipment (a major aerospace manufacturer in the Puget Sound) asked the team at Access for reliable starting equipment that would reduce strain on their mechanical equipment and keep the voltage for the 26kV grid stable.

Access Electric Supply teamed up with Motortronics to develop an 800 amp soft start rated for 4160V and a new synchronous excitation package. The end solution provided greater reliability and stability of their electrical system and helped migrate their equipment into the latest technology. The outcomes on all aspects were significant.