Twentieth century hand-book for steam engineers and electricians with questions and answers; a practical non-technical treatise .. (1913)
Swingle, Calvin Franklin, 1846- [from old catalog] · Chicago, F. J. Drake & company · leaf 1375
Fig. 639hour 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 tnrns,the coils will reinsnlate themselves after the discharge. 2. They are mechanically strongs and…
