. Factory and industrial management. overhead transmission line and for the station lighting. Oneach dynamo panel is one amperemeter, one voltmeter, one field rheo-stat, one voltmeter switch, one loo-ampere switch, one minimum-cur-rent circuit-breaker and one pair of single-pole circuit-breakers. Themiddle, or line, panel has a rheostat, used in starting the gas enginesby driving the dynamos as motors, an amperemeter, and two bipolarswitches, one for the engine-starting resistance and one for controllingthe lighting circuits in the station and its vicinity. Current is taken to the upper statio
. Factory and industrial management. overhead transmission line and for the station lighting. Oneach dynamo panel is one amperemeter, one voltmeter, one field rheo-stat, one voltmeter switch, one loo-ampere switch, one minimum-cur-rent circuit-breaker and one pair of single-pole circuit-breakers. Themiddle, or line, panel has a rheostat, used in starting the gas enginesby driving the dynamos as motors, an amperemeter, and two bipolarswitches, one for the engine-starting resistance and one for controllingthe lighting circuits in the station and its vicinity. Current is taken to the upper station on two copper-wire cables,each 600 metres (1,968 feet) long and of 75 square millimetres crosssection (about No. 00 B. & S. gauge). About 8 per cent, loss is en-countered on this line at full load. The line is attached to 50 double-bell porcelain insulators, sup-ported by treated pine poles having pointed metallic caps. These aregrounded by copper ground wires on each pole. To protect the in- A FUNICULAR ELECTRIC RAILWAY. 365. GENERAL VIEW OF THE RAILWAY LINE AND ITS SURROUNDINGS. stallation as far as possible against lightning, a double-pole lightningarrester is placed at each end of the line. The upper station contains a battery of 114 cells of Pollak accumu-lator, these having been made at the Marly works, near dimensions and constants are: Capacity, 402 ampere-hours atthree-hours discharge, or 276 ampere-hours for one-hour maximum charging current is 180 amperes. Sometimes,though, when the descending car is full and the car coming up isempty, as happens often in the evening, the motor works as a dynamoand its current of about 200 amperes charges the accumulators. Cur-rent on discharge varies up to 250 amperes according to the weight ofthe loads of passengers. The battery is intended to aid the generatingstation at the moments of heavy load, when it discharges in parallelwith the generators. At times of small load it receives its charge, asi
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Keywords: ., bookcentury1800, bookdecade1890, booksubj, booksubjectengineering
