Electrical engineer's pocket-book: a hand-book of useful data for electricians and electrical engineers (1901)
Foster, Horatio A. (Horatio Alvah), 1858-1913 · New York, D. Van Nostrand co.; London, E.& F.N. Spon, ltd. · leaf 234
oles of batteryto the cable should not vary appreciably at any given minute. Pronouncedvariation between the readings at given times and unsteady deflection indi-cate defective cable. Insulation Itesistance l»y Uletliod. of 1a»mm of Cliarg-**. The insulation resistance of a cable or other conductor… … Fig. 2. Let It =. Insulation resistance in megohms per mile.(,= Capacity in microfarads per mile.E = potential of cable as charged.e =z potential of cable after a certain time.Depress one knob of key K, and throw key K to the right, and charge thecable for one minute; then throw key K/ to the left,…
Electrical engineering
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