Disruptive Witness

Disruptive Witness

Author: Alan Noble

Publisher: InterVarsity Press

Published: 2018-07-17

Total Pages: 203

ISBN-13: 0830881093

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What should Christian witness look like in our contemporary society? In this timely book, Alan Noble looks at our cultural moment, characterized by technological distraction and the growth of secularism, laying out individual, ecclesial, and cultural practices that disrupt our society's deep-rooted assumptions and point beyond them to the transcendent grace and beauty of Jesus.


Arc Flash Hazard Analysis and Mitigation

Arc Flash Hazard Analysis and Mitigation

Author: J. C. Das

Publisher: John Wiley & Sons

Published: 2020-12-15

Total Pages: 640

ISBN-13: 1119709806

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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.


Treating Traumatic Stress in Children and Adolescents

Treating Traumatic Stress in Children and Adolescents

Author: Margaret E. Blaustein

Publisher: Guilford Publications

Published: 2019

Total Pages: 545

ISBN-13: 1462537057

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Packed with practical clinical tools, this guide explains how to plan and organize individualized interventions that promote resilience, strengthen child-caregiver relationships, and restore developmental competencies derailed by chronic, multiple stressors. Includes more than 45 reproducibles.


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

Published: 2013-10-22

Total Pages: 293

ISBN-13: 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.