Electricians' operating and testing manual; (1910)
Horstmann, Henry C. [from old catalog], Tousley, Victor Hugo, 1875- [from old catalog] joint author · Chicago, F. H. Drake & co · leaf 112
rating and Testing draw the plug. This throws the whole accumulatedforce of the machine into the bad line, and if there isany possibility whatever the current will jump thebad place and often times operate the circuit success-fully thereafter. This practice is known as jumpingin, and should never… … Figure 75 To shut down the dynamo we close the switch shownat S, Figure 74. This shunts the current around thefields, and leaves them wtihout magnetism, thus caus-ing the current to sink to zero. On no account exceptthat of extreme emergency must a series circuit oper-ating at high potential be…
Electrical engineering · Electric testing
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