Distribution Equipment Modernization to Reduce Arc Flash Hazards

This paper discusses a practical approach to allow personnel safe access to switchgear while maintaining pulp and paper mill processes, specifically in existing electrical distribution system unit substation installations where a main breaker was not incorporated into the original design. Various component configurations were evaluated prior to a final solution being implemented. Modernization of existing equipment was determined to be the most efficient and cost-effective solution, allowing mill personnel to work safely on switchgear during periods of mill production.