Twentieth century handbook for steam engineers and electricians, with questions and answers; a practical nontechnical treatise on the care and management of steam engines, boilers and electric machinery (1922)
Swingle, Calvin Franklin, 1846- [from old catalog] · Chicago, F. J. Drake & company · leaf 1380
ng Switches.—Lightning arresters with dis-connecting switches are desirable in order that they may be Lightning Arresters 1345 disconnected from the line for proper inspection, adjust-ment, cleaning, etc., without opening the line circuit. The disconnecting switches, except the 2,500-voltswitches,… … Fig. 637horn arrester for constant current circuits Choice Coils.—The proper selection of choke coils is animportant feature tt lightning protection. Choke coilsshould be used with lightning arresters except, when thearresters are used to protect cable systems. Three types of choke coils are shown…
