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 153
oil it is therefore drawn off first. Ques. What is the special objection to oil? Ans. Danger of fire. Ques. What kind of oil is used in transformers? Ans. Mineral oil. TR.4XS FORMERS 1.411 Ques. What are the requirements of a good grade oftransformer oil ? Ans. It should show very little… … Fig. 1,969.—Section through Fort Wayne (type A) transformer showing interior of case, cortconductors, and insulation, also division of laminae. The presence of moisture can be detected by thrusting a red hot naDin the oil; if the oil crackle, water is present. Moisture may beremoved by raising the…
Electrical engineering
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