. Electrical world. dfrom these switches to the distributing switchboard, which containsthe necessary instruments for controlling the branch circuits. The motor station contains a 350-hp twin motor, which, througha rope drive, formerly operated the chief transmission system ofthe mills. This twin motor, which consists of two dynamos, is nolonger used as a motor, but serves as a reserve generator operatedby a steam engine in case the outside transmission system fails. Every motor is operated at 650 volts and is furnished with a sep- arate control panel including two-pole switch and ammeter. The
. Electrical world. dfrom these switches to the distributing switchboard, which containsthe necessary instruments for controlling the branch circuits. The motor station contains a 350-hp twin motor, which, througha rope drive, formerly operated the chief transmission system ofthe mills. This twin motor, which consists of two dynamos, is nolonger used as a motor, but serves as a reserve generator operatedby a steam engine in case the outside transmission system fails. Every motor is operated at 650 volts and is furnished with a sep- arate control panel including two-pole switch and ammeter. Thepresent motor equipments of the mills include one 135-hp motor, five60-hp motors and tw-o 30-hp motors. SCHEDULES. The following charges are made to power users: For all purposes, except lighting, cents per kw-hour. Therebates are the same as those given below for lighting circuits; butthere is a minimum annual charge of $ (50 francs) per kwcapacity of the individual station used by the consumer. The lowest. FIG. 9.—RAILWAY .MUTUk price, namely, cents, applies only from midnight to the motors are used at night during lighting hours special termsare made. Light consumers are charged cents per kw-hour., and aminimum of $ per annum. In the following table the second column gives the rebate forusing more than the amount specified in the first column opposite: Dollars. Rebate. 2 per cent. 4 6 8 10 • 15 •• 20 Larger special discounts are given to consumers using more than$1,158 (6,000 francs) of power. The minimum annual cost per horse-power using separate poly-phase stations is $ for low-tension motors and $ for high-tension (2,000-volt) motors of 50-hp or greater capacity. The single-phase circuits may be used continuously except fortwo to four-hour intervals, on Sundays and holidays. The polyphasesystem gives current every day except Sunday and holidays from 6\ to 7 As the r
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectelectri, bookyear1883
