Electricians' operating and testing manual; a hand book for men in charge of electrical apparatus, repair men, trouble men, lamp trimmers, and electricians generally (1916)
Horstmann, Henry Charles, Tousley, Victor Hugo, 1875- joint author · Chicago, F.J. Drake & co · leaf 138
th two windings and is really a trans-former, the primary circuit of which is connectedacross the mains and the secondary in series with themain current. In Figure 88 S is a double throwswitch, by means of which the primary coils Y can beconnected so as to raise or lower the voltage of the line.By… … Figure 88 prevent serious short circuiting of any of the secondarycoils while the contacts of C are moved from one seg-ment to another. It will be seen that C is split andtiiat therefore during the time that it bridges two seg-ments the currents induced in the coil between themmust pass through L.…
Electrical engineering · Electric testing
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