Small, Sidney Aylmer, 1876- [from old catalog] · Chicago, F. J. Drake & co · leaf 104
farbelow 300 volts. In this case the sneak current, as it is called, goesfrom A along the german silver spring B, up through Pand through the sneak coil SC. LIGHTNING ARRESTERS—LOW VOLTAGE 105 The sneak coil is of very fine german silver wire, about30 ohms resistance and in a few seconds this coil… … Fig. 36. Lightning Arrester with Magnetic Blow-out Question 18. What type of arrester is used on moder-ate voltage lines ? Answer. One type is shown in Fig. 36. The air gap isbetween the curved plates. The magnet below is excitedfrom the dynamo and the arc when formed is blown up-wards until the…
Electricity
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