Principles and practice of electrical engineering (1914)
Gray, Alexander, 1882-1921 · New York [etc.] McGraw-Hill Book Company, inc. · leaf 141
INCIPLES OF ELECTRICAL ENGINEERING [Chap.xix lengthen and break. The coil A which produces the magneticfield is called the magnetic blow-out coil. The application of this principle to a contactor switch is shownin Fig. 137. The blow-out coil A produces the magnetic fieldNS, so that if an arc passes… … A Complete switchFig. 137. B Dismantled switch-Contactor switch. 138. Horn Gaps.—The intense heat of an arc causes convectioncurrents of air to flow upward so that, if the switch jaws areshaped as shown in Fig. 138, the arc stream will be blown upwardand will finally break between the arcing tips…
Electrical engineering
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer04inte-337-141.webp)
