. The Street railway journal . eter, rheostatand oil-switch handles, synchronizing plug, and at the bottom DETAILS OF HIGH-TENSION OIL SWITCH IN HIGH-TENSIONTOWER. OIL TANK OF SWITCH IS DISCONNECTKD,AND OPERATING TACKLE IS AT RIGHT a double-pole, single-throw field switch with discharge re-sistance. On the line panel are mounted a frequency indicator,power-factor indicator, 150-scale voltmeter with switch, oil-switch handle, and two Stanley integrating wattmeters. ALincoln synchronizer is swung from a bracket at the end of theboard. To guard against accidents only no-volt secondarycircuits are
. The Street railway journal . eter, rheostatand oil-switch handles, synchronizing plug, and at the bottom DETAILS OF HIGH-TENSION OIL SWITCH IN HIGH-TENSIONTOWER. OIL TANK OF SWITCH IS DISCONNECTKD,AND OPERATING TACKLE IS AT RIGHT a double-pole, single-throw field switch with discharge re-sistance. On the line panel are mounted a frequency indicator,power-factor indicator, 150-scale voltmeter with switch, oil-switch handle, and two Stanley integrating wattmeters. ALincoln synchronizer is swung from a bracket at the end of theboard. To guard against accidents only no-volt secondarycircuits are taken to the alternating-current boards. DIRECT-CURRENT SWITCHBOARDThe direct-current railway switchboard is composed only ofgenerator panels. All the positive machine leads are carriedfrom the generators directly to the line panel, which is mountedon the wall where the two feeders leave the building. This ispurely an emergency device, intended not to be opened underload, but merely to enable the two parts of the system to be. 64 STREET RAILWAY JOURNAL. [Vol. XXIII. No. 2. worked independently, if necessary. For this reason it wasplaced away from the main boards, where its switches are notso likely to be opened under the excitement that sometimesaccompanies station trouble. On each of the three generatorpanels are mounted a 1500-amp. I-T-E circuit breaker, 1500-scale ammeter, rheostat handle, one single-pole, single-throw,
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
