Reducing high frequency ground currents to zero - Patented system solution provides a more effective grounding method

摘要

TECHNOLOGY AND THE electrical/ electronics industry have changed at a dizzying pace. Among these many changes is the growing use of adjustable speed drives (ASDs) or variable frequency drives (VFDs) with motors. An unforeseen consequence of using VFD's with motors is the production of high frequency ground currents. These ground currents can and often do affect sensitive devices - as well as causing costly unplanned downtime in ASD/VFD applications. When these problems arise, technicians often take a trial-and-error approach, such as installing line and/or load reactors or EMI filters. Too often, these attempts prove ineffective and overly costly in terms of both time and dollars wasted.