Electrical tables and engineering data; a book of useful tables and practical hints for electricians, foremen, salesmen, solicitors, estimators, contractors, architects and engineers (1916)
Horstmann, Henry Charles, Tousley, Victor Hugo, 1875- joint author · Chicago, F.J. Drake & co · leaf 194
d, the speedcontrol should be by means of field regulation. Foralternating current, the squirrel cage type of arma- 192 ELECTRICAL TABLES AND DATA mre may be used, but if speed control is desired, awound armature should be provided. The latter ismuch preferable for automatic control. The… … Figure 17. for larger machines. For example: a 30-ton com-pressor requires a 52 H.P. motor; a 300-ton com-pressor requires a 470 H.P. motor. When the ice-making capacity of compressor is given, the motorH.P. required w^ill in general be about double thefigure given in the curve. Refrigerators.—All…
Electrical engineering
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
