Cyclopedia of applied electricity : a practical guide for electricians, mechanics, engineers, students, telegraph and telephone operators, and all others interested in electricity (1905)
American School (Chicago, Ill.) · Chicago : American School of Correspondence · leaf 426
rc-over testshould be made with theouter surface of the insu-lator l)otli wet and dry. Forthe purpose of this test theinsulator should be screwedonto an iron ])in, or onto awooden pin that has been covered with tinfoil. One wire of thetesting circuit should then be secured in the groove of the… … Transformer Di.scharyint; Ik-twefU Sheets ulTiufoil Around a Glass Plate. 390 INSULATORS depends on the conditions of that surface and of the air. In lightair, such as is found at o;reat ekvations, an arc will jump a greaterdistance than in dry air near the sea level. A fog increases thedistance…
Electrical engineering
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