Arc Flash Hazard Analysis and Mitigation

Arc Flash Hazard Analysis and Mitigation
Author: J. C. Das
Publisher: John Wiley & Sons
Total Pages: 640
Release: 2020-12-12
Genre: Technology & Engineering
ISBN: 1119709792
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This new edition of the definitive arc flash reference guide, fully updated to align with the IEEE's updated hazard calculations An arc flash, an electrical breakdown of the resistance of air resulting in an electric arc, can cause substantial damage, fire, injury, or loss of life. Professionals involved in the design, operation, or maintenance of electric power systems require thorough and up-to-date knowledge of arc flash safety and prevention methods. Arc Flash Hazard Analysis and Mitigation is the most comprehensive reference guide available on all aspects of arc flash hazard calculations, protective current technologies, and worker safety in electrical environments. Detailed chapters cover protective relaying, unit protection systems, arc-resistant equipment, arc flash analyses in DC systems, and many more critical topics. Now in its second edition, this industry-standard resource contains fully revised material throughout, including a new chapter on calculation procedures conforming to the latest IEEE Guide 1584. Updated methodology and equations are complemented by new practical examples and case studies. Expanded topics include risk assessment, electrode configuration, the impact of system grounding, electrical safety in workplaces, and short-circuit currents. Written by a leading authority with more than three decades' experience conducting power system analyses, this invaluable guide: Provides the latest methodologies for flash arc hazard analysis as well practical mitigation techniques, fully aligned with the updated IEEE Guide for Performing Arc-Flash Hazard Calculations Explores an inclusive range of current technologies and strategies for arc flash mitigation Covers calculations of short-circuits, protective relaying, and varied electrical system configurations in industrial power systems Addresses differential relays, arc flash sensing relays, protective relaying coordination, current transformer operation and saturation, and more Includes review questions and references at the end of each chapter Part of the market-leading IEEE Series on Power Engineering, the second edition of Arc Flash Hazard Analysis and Mitigation remains essential reading for all electrical engineers and consulting engineers.

NASA Technical Note

NASA Technical Note
Author:
Publisher:
Total Pages: 804
Release: 1963
Genre: Aeronautics
ISBN:
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Advances in High Voltage Insulation and Arc Interruption in SF6 and Vacuum

Advances in High Voltage Insulation and Arc Interruption in SF6 and Vacuum
Author: V. N. Maller
Publisher: Elsevier
Total Pages: 293
Release: 2013-10-22
Genre: Technology & Engineering
ISBN: 1483157652
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Advances in High Voltage Insulation and Arc Interruption in SF6 and Vacuum deals with high voltage breakdown and arc extinction in sulfur hexafluoride (SF6) and high vacuum, with special emphasis on the application of these insulating media in high voltage power apparatus and devices. The design and developmental aspects of various high voltage power apparatus using SF6 and high vacuum are highlighted. This book is comprised of eight chapters and opens with a discussion on electrical discharges in SF6 and high vacuum, along with the properties and handling of SF6 gas. The following chapters focus on high voltage breakdown and arc interruption in SF6 and in vacuum; various types of SF6 gas insulated circuit breakers and metal enclosed switchgear, together with their design considerations; and application of SF6 gas in some insulated equipments. The final chapter addresses the various problems relating to the development of vacuum switchgear and considers some solutions that led to the successful development of vacuum interrupters of acceptable quality. This monograph will be of direct use to engineers in industry and those with electricity supply and utility establishments, as well as graduate students and research workers who want to familiarize themselves with the investigations and the results on the various phenomena relating to SF6 and high vacuum and their practical applications.

The Decline Effect

The Decline Effect
Author: Dean Brooks
Publisher: FriesenPress
Total Pages: 897
Release: 2023-01-31
Genre: Mathematics
ISBN: 1039151892
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A crisis is coming for everyone who uses math and science. For decades now, the classical model of probability (the indifference principle and the Gaussian distribution) has been breaking down and revealing its limitations in fields from economics to epidemiology. Now a new approach has revealed the underlying non-classical principle behind all these 'anomalous' laws: — Pareto’s law of elite incomes — Zipf’s law of word frequencies — Lotka’s law of scientific publications — Kleiber’s law of metabolic rates — the Clausewitz-Dupuy law of combat friction — Moore’s law of computing costs — the Wright-Henderson cost law — Weibull’s law of electronics failures — the Flynn Effect in IQ scores — Benford’s law of digit frequencies — Farr’s law of epidemics — Hubbell’s neutral theory of biodiversity — Rogers’ law of innovation classes — Wilson’s law of island biogeography — Smeed’s law of traffic fatalities The general law behind all these particular laws (and countless others) is the "decline effect". As a system ages or grows in size, the rules of probability subtly change. Entropy increases, rare items become rarer, and average performance measures decline. The human meaning of a decline may be positive (decreasing costs, falling epidemic mortality) or negative (lower customer loyalty, decreasing efficiency), but the mathematical pattern is always the same. The implications are enormous, as these examples show: All epidemic diseases decline in infectiousness and in lethality. HIV-AIDS went from a highly infectious, 95-percent fatal disease, to a survivable condition with a latency of decades. COVID-19 went from a death rate of 7 percent in early 2020, to under 2 percent in 2022. Hereditary dynasties around the world declined smoothly in lifespan, from hundreds of years to tens of years. When democracies replaced monarchies, the decline (in spans of party control) continued.

Without Disruption (ARC)

Without Disruption (ARC)
Author: Carrie French
Publisher: Carrie French
Total Pages: 298
Release: 2021-10-26
Genre:
ISBN:
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In pursuit of a different life, Harrison leaves everything behind - his family, his community, and even his own name. He can never go back. Global society is united with a simple guarantee: everyone can achieve stable, lasting happiness for one hundred years in a curated lifestyle that brings them joy. Well... not unlimited joy, just mild contentment. No more, no less. Every element of life is controlled by Vie - an AI system that is worshipped as divine. She guides members into 'harmony' with in-ear alerts, retina screens, and vast, immersive simulations. Harrison is ambitious and impulsive with a curious habit of recalling hazy memories that never happened. The course of his life is punctuated with hasty decisions, emotional compromises, and genuine attempts to play by the rules. He's not only running out of options; he's running out of time. Is Harrison's will strong enough to break Vie's authoritarian hold? Or will he finally learn to settle for mediocrity, just like everyone else? The threat of 'eviction' is looming, and Harrison's death day might come sooner than he thinks. For fans of Alduous Huxley, Ray Bradbury, Lois Lowry, and Ira Levin, this thought-provoking dystopian novel sparks questions about the diversity of joy and the resilient fight for independence.

Electro Static Discharge

Electro Static Discharge
Author: Michel Mardiguian
Publisher: John Wiley & Sons
Total Pages: 239
Release: 2011-09-20
Genre: Technology & Engineering
ISBN: 1118211073
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A thorough and concise treatment of ESD Recognizing its methodic, step-by-step attack of the electrostatic discharge (ESD) problem, the initial release of this book was quoted by specialists as "the most thorough and concise treatment of the broad ESD continuum that is available." Now in its Third Edition, this book delivers the same trusted coverage of the topic while also incorporating recent technological advances that have taken place in the engineering community. The book begins with the basics of ESD for humans and objects, and goes on to cover: Effects of ESD coupled to electronics Principal ESD specifications ESD diagnostics and testing Design for ESD immunity To help with troubleshooting, many ESD case histories are given along with their successful fixes. Electrostatic Discharge is essential reading for all designers who want to avoid component failures, no trouble found incidents, and random errors.

Electric Furnaces

Electric Furnaces
Author: Wilhelm Borchers
Publisher:
Total Pages: 250
Release: 1908
Genre: Electric furnaces
ISBN:
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D'Arc

D'Arc
Author: Robert Repino
Publisher: Soho Press
Total Pages: 400
Release: 2017-05-09
Genre: Fiction
ISBN: 1616956879
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With the fragile interspecies peace that followed the War With No Name under assault from land and sea, Sheba and Mort(e) have no choice but to take up their arms and enter once again into the conflict that threatened to tear them apart. “Repino's dog, cat, and beaver soldiers are nakedly real, as honest as any characters in modern fiction. As horrible as it may sound, may The War With No Name never end." —Corey Redekop, author of Husk In the aftermath of the War With No Name, the Colony has been defeated, its queen lies dead, and the world left behind will never be the same. In her madness, the queen used a strange technology to uplift the surface animals, turning dogs and cats, bats and bears, pigs and wolves into intelligent, highly evolved creatures who rise up and kill their oppressors. And now, after years of bloodshed, these sentient beasts must learn to live alongside their sworn enemies—humans. Far removed from this newly emerging civilization, a housecat turned war hero named Mort(e) lives a quiet life with the love he thought he had lost, a dog named Sheba. But before long, the chaos that they escaped comes crashing in around them. An unstoppable monster terrorizes a nearby settlement of beavers. A serial killer runs amok in the holy city of Hosanna. An apocalyptic cult threatens the fragile peace. And a mysterious race of amphibious creatures rises from the seas, intent on fulfilling the Colony’s destiny and ridding the world of all humans. No longer able to run away, Sheba and Mort(e) rush headlong into the conflict, ready to fight but unprepared for a world that seems hell-bent on tearing them apart. In the twilight of all life on Earth, love survives, but at a cost that only the desperate and the reckless are willing to pay.