. Electric railway journal . Current Lines PerAmp. 76 1680 FLUX DENSITY NO. 210 CONTROLLER WITH DIRECT FLUXBLOW-OUT extending the entire length of the contacts is clearlyshown by the results obtained with the H1A and TlAcontrollers which have pole-piece blow-out and field-typeblow-out respectively. There is, however, a slight de-crease in the flux density at the center of the controlleras compared with the ends. , □ n Current Lines Per —,Amp. 6972747372777572707172 70. Current Lines PerAmp. 320 4S0 280 FLUX DENSITY B-18 CONTROLLER WITH 4000 LINES PERSQ. CM. AT CONTACTS NEA
. Electric railway journal . Current Lines PerAmp. 76 1680 FLUX DENSITY NO. 210 CONTROLLER WITH DIRECT FLUXBLOW-OUT extending the entire length of the contacts is clearlyshown by the results obtained with the H1A and TlAcontrollers which have pole-piece blow-out and field-typeblow-out respectively. There is, however, a slight de-crease in the flux density at the center of the controlleras compared with the ends. , □ n Current Lines Per —,Amp. 6972747372777572707172 70. Current Lines PerAmp. 320 4S0 280 FLUX DENSITY B-18 CONTROLLER WITH 4000 LINES PERSQ. CM. AT CONTACTS NEAREST THE BLOW-OUT COIL the top contacts but 1800 lines per square centimeterwere found. A still greater variation was found in theNo. ,210 controller which showed 2120 lines per squarecentimeter for contacts adjacent to the blow-out coil,and this decreased to 360 lines per square centimeterat the top of the controller. The uniformity of flux obtained by using a long coil The results obtained with the metallic-shield type ofblow-out used in the Dick-Kerr controller show a greatirregularity of flux due to the number of poles used. Saturation of the Iron in Pole Pieces In connection with these tests a great number andvariety of saturation curves were also made from the 678 results obtained. Thesecurves show how the fluxdensity increases with thecurrent up to the saturationof the cores and pole of these curves rep-resenting the center con-tacts of the T1A controlleris
Size: 1331px × 1878px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyorkmcgrawhillp
