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 179
be mounted on the station switch-board together with the usual indicating instruments, oron a separate frame. Such rheostats consist essentiallyof high-resistance wire or ribbon with numerous taps con-nected to a series of contact studs over which moves a GENERATORS. 167 contact arm. The resistance… … Fig. 95. placed on the back of switchboards with the regulatinghandle projecting in front. The resistance units are of thecard form, and are constructed by winding the resistanceribbon on tubes of asbestos which are subsequently pressedflat. These cards are then assembled, with interposedasbestos,…
Electric machinery
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer04inte-140-47.webp)
