. The Street railway journal . nt 5 points below the maximumreached on the last preceding weekly overcharge. Weekly Overcharge.—On Sunday morning the battery mustbe given an overcharge, this being similar to the ordinarycharge, except that it is continued longer. When the batterybegins to gas take specific gravity readings of the pilot cellat fifteen-minute intervals; continue the charge until thosereadings show no increase in gravity for three-quarters of anhour, when the current should be cut off, the battery being full. Thunder Storms.—On account of danger from lightning andburning out, it
. The Street railway journal . nt 5 points below the maximumreached on the last preceding weekly overcharge. Weekly Overcharge.—On Sunday morning the battery mustbe given an overcharge, this being similar to the ordinarycharge, except that it is continued longer. When the batterybegins to gas take specific gravity readings of the pilot cellat fifteen-minute intervals; continue the charge until thosereadings show no increase in gravity for three-quarters of anhour, when the current should be cut off, the battery being full. Thunder Storms.—On account of danger from lightning andburning out, it is advisable during severe thunder storms tokeep the Weston voltmeter cut out of circuit by keeping itsswitch on the off point, except when readings are being it is possible to adjust the bus to the battery floating voltage—that is, 540 volts, the battery should be floated directly onthe system without the booster, and in case it is advisable, asfar as practical, to keep the booster out of service at such FIG. OF BATTERY ROOM. Pilot Cell Readings.—While the battery is on the system,read and record once every hour the specific gravity of cellNo. 169. Read and record once every day the average electro-lyte temperature of this cell, and also the temperature of theroom. It is of assistance to chalk on the outside of the pilotcell tank each week the maximum gravity reached after theweekly overcharge, this reading being used as a standard foroperating the battery during the following week. Read andrecord at the end of each charge and the end of each dis-charge the pilot cell gravity. The proper height of the elec-trolyte of the pilot cell should be marked in any convenientmanner, and then enough water put into this cell each day inorder to keep the electrolyte at this constant height. Weekly Readings.—A complete individual cell specific grav-ity reading of the entire battery should be taken at noon onSunday. A second complete individual cell spe
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
