Dynamo electric machinery; its design, construction, and operation; direct-current machines (1915)
Sheldon, Samuel, 1862-1920, Hausmann, Erich, 1886- joint author · New York, D. Van Nostrand Company; · leaf 290
as a portion of the unbalanced load-cur-rent of the branch to which it is directly connected. Thelast will flow in a direction opposite to that indicated in thefigure. According to the foregoing discussion, (6) and (7)^the apportioning is as follows : — A = /„ + (4 - ■ 1)7.1 + BIb + CIc. and /, =… … Fig. 181. The equations of (9) and (10) can be extended to embraceany number of branches. Balancers having three elements,however, satisfactorily meet the requirements of multiple- BOOSTERS. 279 voltage systems for speed control of motors. Commonbranch pressures are 40, 80, and 120 volts…
Electric machinery
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