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 342
d include or straddle threecommutator bars. The normaldeflection will then be twice thatindicated between two segmentsuntil the coils in fault arereached, when the deflection willdrop. When this happens, testeach coil for trouble ; and if indi-vidually they are all right, thetroubleis between the… … Fig. 19. Bar to bar test foropen circuit in coil.
Electrical engineering
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