NDLI: Modified medium voltage arc flash incident energy calculation method

Content Provider	IEEE Xplore Digital Library
Author	Wu, A.Y.
Copyright Year	2008
Description	Author affiliation: Global Eng. Co., Atlanta, GA (Wu, A.Y.)
Abstract	IEEE Standard 1584-2002 provides a guide for conducting arc-flash hazard analyses for low voltage and medium voltage systems. However, users need to be aware that the models in the guide were based on the measurements of arc incident energy under a specific set of test conditions combined with theoretical work. In the medium voltage arc flash analysis, the incident energy calculation, according to the guide, is a function of system voltage, gap between conductors, the distance from the possible arc point to the worker, the bolted three-phase fault and the arc clearing time from the source-side protecting device. However, the effect of fault current decaying was not considered in the current guide. According to IEEE (Institute of Electrical and Electronic Engineers) recommended short circuit calculation method, the fault contributions from generators, induction and synchronous motors would usually decay over the short circuit period based on their short circuit time constants and excitation system. Therefore, the calculated incident energy from short circuit point of view would be higher than the value if the effect of decaying current were considered.
Starting Page	131
Ending Page	139
File Size	925818
Page Count	9
File Format	PDF
ISBN	9781424425242
ISSN	01902172
DOI	10.1109/PAPCON.2008.4585819
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-06-22
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Induction motors Synchronous motors Generators Fault currents Time domain analysis Circuit faults Rotors decaying three-phase fault current Arc flash analysis Arc incident energy Arc current Arc clearing time
Content Type	Text
Resource Type	Article
Subject	Industrial and Manufacturing Engineering Electrical and Electronic Engineering

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Modified Medium-Voltage Arc-Flash Incident Energy Calculation Method

Arc flash mitigation using active, high-speed switching

Induction motor's contribution to short circuit current

Arc Flash Mitigation Using Active High-Speed Switching

Calculation of the Three-Phase Internal Fault Currents in Medium-Voltage Electrical Installations

A strategic procedure to limit arc flash energy levels

Arcing faults in low and medium voltage electrical systems - Why do they persist?

Improving selectivity & arc-flash protection through optimized instantaneous protection settings

Maximizing protection by minimizing arcing times in medium voltage systems

Modified medium voltage arc flash incident energy calculation method

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