[Electric engineering.] . iimmmni- Storage Cells. Fig. 52. when the switch is thrown in, the direction of the chargingcurrent being indicated by the arrows. In this case, wehave assumed that the number of cells to be charged is suf-ficiently great to take up the voltage of the dynamo; if thiswere not the case, a resistance would have to be inserted inseries with the battery, as previously explained. 64. Having made sure that the connections are all right,see that switch E is open and get the dynamo up to III.—ii 54 ELECTRIC TRANSMISSION. § 15 Then measure the voltage of the cells and
[Electric engineering.] . iimmmni- Storage Cells. Fig. 52. when the switch is thrown in, the direction of the chargingcurrent being indicated by the arrows. In this case, wehave assumed that the number of cells to be charged is suf-ficiently great to take up the voltage of the dynamo; if thiswere not the case, a resistance would have to be inserted inseries with the battery, as previously explained. 64. Having made sure that the connections are all right,see that switch E is open and get the dynamo up to III.—ii 54 ELECTRIC TRANSMISSION. § 15 Then measure the voltage of the cells and adjust the fieldrheostat of the dynamo until the voltage of the latter isfrom 5 to 10 per cent, higher than that of the cells. Throwin the main switch and adjust the rheostat until the ammeterindicates the charging current called for by the makers ofthe cells. When the cells are charged for the first time,some makers recommend that they be charged at about one-third the usual rate for the first 3 hours. As the cellsbecome charged, the voltage
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