Title :
NEC design compliance, system protection and Arc Flash Hazard
Author :
Simpson, Ronald H.
Author_Institution :
GE Energy, Alpharetta, GA, USA
Abstract :
The National Electric Code specifies limits on settings of transformer overcurrent protective devices that directly affect system protection. However, compliance with NEC design guidelines does not assure adequate system protection. The result can be zones of poor or non-existent protection and “Extreme Danger” Arc Flash Hazard Ratings (AFH). This paper discusses existing system protection in a large paper mill and makes recommendations for improving that protection and lowering AFH Ratings.
Keywords :
arcs (electric); health hazards; paper mills; power transformer protection; NEC design compliance; National Electric Code; extreme danger arc flash hazard ratings; paper mill; system protection; transformer overcurrent protective devices; Arc Flash Hazard; NEC Design Guidelines; System Protection;
Conference_Titel :
Pulp and Paper Industry Technical Conference (PPIC), Conference Record of 2012 Annual IEEE
Conference_Location :
Portland, OR
Print_ISBN :
978-1-4673-0406-1
DOI :
10.1109/PPIC.2012.6293012