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Arc flash is an important consideration for personnel safety. This paper shows test results for overhead arc flash scenarios and arc flash in a padmounted switch. Both scenarios result in more incident energy than expected. For overhead arc scenarios, longer arc lengths are considered when analyzing arc flash. For the padmounted switch, an equation is(More)
With the advent of deregulation, distributed generation will play an increasing role in electric distribution systems. Various new types of Distributed Generation (DG), such as micro-turbines and fuel cells, are now being developed in addition to the more traditional solar and wind power. A common belief among developers is that DR will improve power(More)
A test program was completed to measure arc-flash incident energy from actual 480-V utility equipment to determine the most appropriate flame resistant clothing for utility workers. The equipment tested included self-contained and current transformer-rated meters, pad-mounted transformer secondary cubicles, power panels, and network protectors. Testing was(More)
  • T. A. Short
  • 2011
Arc flash is an important consideration for personnel safety. This paper explores available ways to evaluate arc-flash severity for primary distribution systems, both in equipment and open air. Results from staged tests and from utility monitoring data suggest the need to use longer arc lengths than normal as input into open-air arc-flash calculations.(More)
is a peer-reviewed electronic journal of the International Association for Statistical Education (IASE) and the International Statistical Institute (ISI). SERJ is published twice a year and is free. SERJ aims to advance research-based knowledge that can help to improve the teaching, learning, and understanding of statistics or probability at all educational(More)
Arc flash on distribution circuits is a safety issue that can impact work practices for line and substation workers. This paper shows test results for arc flash events in medium-voltage switchgear cubicles and live-front transformer enclosures. Both scenarios can result in more incident energy than the prediction of the IEEE 1584-2002. Much higher than(More)
This paper presents an analysis based on recent Electric Power Research Institute research in which a comparison is made between the “loss factor” calculated directly from annual simulations and a loss factor estimated variously from established equations and published papers and articles. The analysis provides new insights into the use of(More)