High Resistance Grounding—Avoiding Unnecessary Pitfalls

Autor: R.A. Hanna, J. Dickin, David W. Murray, T. Morin
Rok vydání: 2009
Předmět:
Zdroj: IEEE Transactions on Industry Applications. 45:1146-1154
ISSN: 0093-9994
DOI: 10.1109/tia.2009.2018948
Popis: The high resistance grounding (HRG) of 480-4160-V industrial power systems increases service continuity, enhances personnel safety, and reduces equipment damage when a ground fault occurs. HRG allows maintenance personnel to quickly and safely locate a ground fault while avoiding unscheduled downtime. An abundance of literature has been published on HRG practices since the mid-1970s. Recent years have seen increased application and misapplication of transient voltage surge suppressors and uninterruptible power supplies in HRG power systems. These misapplications and their solutions are discussed. Additionally, engineering oversights in the design of HRG systems are addressed, as well as operations and maintenance issues associated with an HRG system.
Databáze: OpenAIRE