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 320
uit 318 Operating and Testing both outside mains are carried through the meter, onethrough each of the series coils. The shunt field isconnected by means of a wire tap to the neutral main.The Thompson three-wire meter is shown in Figure187. In some types of three-wire meters no neutraltap is used,… … Figure 187 Figure 188 inaccessible the possibility of tampering with the meteris reduced. It has, however, the disadvantage in thatan added resistance must be placed in series with theshunt field when used on direct current circuits withthe consequent increase in the power consumed by themeter.…
Electrical engineering · Electric testing
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