Hawkins electrical guide. Questions, answers & illustrations; a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications; a practical treatise (1914)
Hawkins, N. (Nehemiah), 1833- · New York, T. Audel · leaf 156
= x^ — — gee | h fc CURRENT AND PRESSURE LIMITING DEVICES 1,675 This device may be connected in series with the motor leads forvoltages up to 2,500; it is designed with an inverse time limit devicewhich may be adjusted to give the desired protection. The field for relays is more extensive for… … .7.7.7. \AM/VW Fig. 2.348.—Diagram showing three wire dynamo protected by double pole double coil over-load circuit breaker (or two single pole breakers with interlock) with bell alarm switches.Complete protection is secured as breaker is connected between armature and series field. obtained by the…
Electrical engineering
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