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 135
tandard relays arecalibrated at 6, 8, 10, and 12 amperes, the coils being designed to carry five amperescontinuously, with a temperature rise not exceeding S(>° Fahr. Power to operate relay:The relay requires twenty volt amperes for its operation at full load; the influence of thistype of relay… … \ \ \ \ 25 CTCUES N. \^_ : ^ \^ ^^ ^^^_ ^*v. *»3 ■ .- . . - ES 10 11 12 .3 14 15 16 17 16 Fig. 2.30S.— - Curves 1, 2. 3, and 4 . various cm . bctwuui curves rand 4. 7 ■ combination of £ t limit relay. The combination of 1 1 types are seen in the curve. the first part of ~ ri ut definite ti -three…
Electrical engineering
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