Arc flash hazard analysis and mitigation

• Tác giả: J. C Das
• Ngôn ngữ: eng
• ISBN-13: 978-1119709800
• Ký hiệu phân loại: 621.310289 Electrical, magnetic, optical, communications, computer engineering; electronics, lighting
• Thông tin xuất bản: Hoboken, New Jersey : Wiley-IEEE Press, 2021
• Mô tả vật lý: 1 PDF.
• Bộ sưu tập: Tài liệu truy cập mở
• ID: 314854
• Chủ đề: 1. Electric power systems--Protection; 2. Electric power systems--Safety measures; 3. Electric spark--Prevention

Tóm tắt

"An arc flash is an electrical breakdown of the resistance of air resulting in an electric arc which can occur where there is sufficient voltage in an electrical system and a path to ground or lower voltage. Electrical arcs experience negative incremental resistance, which causes the electrical resistance to decrease as the arc temperature increases. Therefore, as the arc gets hotter the resistance drops, drawing more and more current (runaway) until some part of the system melts, trips, or evaporates, providing enough distance to break the circuit and extinguish the arc. An arc flash with 1000 amperes or more can cause substantial damage, fire or injury."-- Provided by publisher.