[Electric engineering.] . Fig. 22. Fig. 23. 48. Lamps in Multiple Series.—This method, some-times called parallel series, is a combination of the two 40 ELECTRIC LIGHTING. 16 preceding and is used in a number of special cases. Per-haps its widest use is in connection with the lighting ofelectric street cars; it is also used in mine-lighting work,where lights are operated from the haulage system. Thismultiple-series scheme of connection is shown in Fig. , for example, that we have a pair of mains betweenwhich a constant pressure of 500 volts is maintained, as on astreet railway, and t
[Electric engineering.] . Fig. 22. Fig. 23. 48. Lamps in Multiple Series.—This method, some-times called parallel series, is a combination of the two 40 ELECTRIC LIGHTING. 16 preceding and is used in a number of special cases. Per-haps its widest use is in connection with the lighting ofelectric street cars; it is also used in mine-lighting work,where lights are operated from the haulage system. Thismultiple-series scheme of connection is shown in Fig. , for example, that we have a pair of mains betweenwhich a constant pressure of 500 volts is maintained, as on astreet railway, and that we wish to operate incandescentlamps on such a circuit. We cannot obtain lamps for500 volts and a single 100-volt lampwould be burned out instantly if it wereconnected across the mains. If we wishto use 100-volt lamps, we may connectfive of them in series, as shown. Withsuch an arrangement, the current throughthe series of five lamps would be about4- ampere and the pressure across eachlamp 100 volts. We may connect
Size: 920px × 2717px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookidelectricengi, bookyear1902
