Electrical engineer's pocket-book: a hand-book of useful data for electricians and electrical engineers (1901)
Foster, Horatio A. (Horatio Alvah), 1858-1913 · New York, D. Van Nostrand co.; London, E.& F.N. Spon, ltd. · leaf 623
magnet windings are excited only when a discharge takes placeacross the air-gap. A supplementary gap is provided in the Type BArrester, in shunt with the magnets, thus providing a relief for the coilsfrom excessive static charge without affecting their action upon the maingap. The magnet coils,… … FlG. 17. Type MB for DirectCurrentCircuits up to 850 Volts. Fig. 18. Connections forType B Arresters. LIGHTNING ARRESTEES FOR DIRECT CURRENT. 611 The Type MD Lightning Arrester has been designed for use on directcurrent circuits up to 850 volts. While similar to TypeM, Form C Arrester, it is…
Electrical engineering
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