Electrical machinery; a practical study course on installation, operation and maintenance (1921)
Annett, Fred Anzley · New York [etc.] McGraw-Hill book company · leaf 321
ECTRICAL MACHINERY exercised to make the connections in such manner that themagnetic poles created by the current through thorn shall havethe correct polarity. If the poles created by the shunt-fieldwinding are those indicated by N and S in Fig. 336, the con-nections for an interpole machine would… … Fig. 337.—Series and interpole winding on tluee-vvire generator. When dealing with three-wire systems of large demand orhaving heavy peak loads at certain houiN of the (hiy, thesame factors govern as in any other electrical system, and itmay become necessary or advi.sable to install several units…
Electric machinery
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