Twentieth century handbook for steam engineers and electricians, with questions and answers; a practical nontechnical treatise .. (1916)
Swingle, Calvin F. (Calvin Franklin), b. 1846 · Chicago, F.J. Drake & company · leaf 1381
Fig. 639 HOUR GLASS TYPE—CHOKE COIL 15,000-35,000 VOLTS … 6,000 volts 4,600 volts Fig. 640 low voltage choke coils The hour glass type has the following advantages onhigh voltages. Lightning Arresters 1347 1. Should there be any arcing between adjacent turns,the coils will reinsulate themselves after the discharge. 2. They are mechanically strong, and…
