. The Street railway journal . PUMP ROOM, SALFORD reading the voltage between midwire and either side of the three-wire system. The switchgear and instruments are similar to thoseon the other boards. There are eighteen traction feeder cables and four insulatedreturn feeders taken from the works to the section boxes on. VIEW ABOVE BOILERS GENERATING UNIT, SALFORD center panel are mounted two illuminated dial dynamo voltmetersand two bus-bar voltmeters of similar design. Each dynamo panel carries an ammeter, circuit breakers, treble-pole main switch operated by two handles (one taking the positi
. The Street railway journal . PUMP ROOM, SALFORD reading the voltage between midwire and either side of the three-wire system. The switchgear and instruments are similar to thoseon the other boards. There are eighteen traction feeder cables and four insulatedreturn feeders taken from the works to the section boxes on. VIEW ABOVE BOILERS GENERATING UNIT, SALFORD center panel are mounted two illuminated dial dynamo voltmetersand two bus-bar voltmeters of similar design. Each dynamo panel carries an ammeter, circuit breakers, treble-pole main switch operated by two handles (one taking the positiveswitch and the other the negative and equalizer switches) and afield regulating and break-switch. Each feeder panel carries two ammeters, circuit breakers, mainswitches, wattmeters and lightning arresters. The capacity ofthe feeder switch-gear varies from 300 amps, on some feeders to750 amps, on others. The circuit breakers used on this board areof the I. T. E. pattern. The main switches are of the chopperpattern, with multiple contacts. The field regulating switcheshave fifty contacts and a shunt-break attachment, and are inter-locked with the main switches. The lightning arresters are ofI he Garton-Danicls pattern. The recording instruments arc byElliott Brothers. The wattmeters are of the Thomson switch-bo
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
