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 373
nof Secondary Coils. The transformers are enclosed in cast iron or sheet iron tanks filled withtransil oil. The oil, in addition to being an insulating and cooling medium,serves to dampen any sudden movement of the secondary coils. These transformers are connected to the regular constant potential… … Fig. 27. Diagram of Connections. The full-load efficiency of this type is practically the same as that of aconstant potential transformer of the same capacity. The power factor ofthe system at full load is about 85 per cent, due to the reactance of alternat-ing arc lamps. At fractional loads, the…
Electrical engineering
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