Deseret evening news. [volume] (Great Salt Lake City [Utah]) 1867-1920, 1897-02-11
TURN ON THE POWER
Street Cars 10 ba Propelled by Big
Cottonwood Electrical Energy.
THE UTAH POWER COMPANY.
One OF its Large Machines Now Ready
for Uperatiou-IO Commence
Tomorrow.


care OF the Ssit Lake CITY street hsii-
way company WIN oe pfopeiieu Wy
power rom Big Co'ton"oou' iurnisheu
by the Utah Power company, which
was granted a franchise recently,
Tho ,nte,ti,, Urn. In s,a,, nm the
-.
hacnine'y anu MAKE tue chahBe ish'
Monday, and directoro had gathered
here, some from considerable dis
t.no. IN ,t,o... ,ha commencement,
-.
vi opefatiohs' pus owing 10 tue iac'
that there was hitch in the workings
Ii had to be poslpoped. Several Al
t.n,n,s h.v. ba.p ,,.,. IN st.,, M, Inn
'p
mseuinety' Out eaoh TIME u was iouhu
necessary to adjust some minor detail.
The officials are of opinion now. how
.va, that ava,v,,,,,o, min ho q, s..d,-
....
ness 70 s'ar' up tonetro" morning.
The electric power Is transmitted by
the Utah Power compauy from its
wsts, pow., in p,y Co,,onwooa
Po" oo1
canyon, thifteen miles u!stant' Inc
power, at present, will be used Tor
IN, p.S,,
Wy o' y"
the company proposes TO distribute the
power throughout the city for lighting
purposes ana the operation OF station
AIRY motors OF any desired siz,.
The water is obtained from Big
Cottonwood creek, as IL leaves the
plant OF the Big Cottonwood Power
company. From this point 1t IL carried
in wooden tiume along the side of
the mountain on the north side OF the
canyon for about one and three.
quarters miles, where 1t runs into q
large iron standpipe. From the stand
pipe the water is carried down to the
power he use in an iron pipe iorty eight
inches In diameter anu about thirteen
hundred feet long, the fall being about
four hundred and iorty feet.
The electrical apparatus ia furnished
by the Westinghouse Electric &
Manufacturing company Pittsburg,
Pa, the same company that built the
mammoth machines at Niagara Falls.
The system here in use Is the same In
principle rs that employ ed at Niagara,
but differs somewhat In details, due to
local conditions. The final equipment
VIII 90 nsist of three machines OF one
which Ia now ready to rue. These
machines generate Tesla two phase
current OF i've hundred volts pressure
and seventy-two hundred alterations
per minute,
In email houee close to the power
station the current passes through
raising transformers which change "
from two phases to three phases and
raise the pressure from i've hundred
volts TO niteeh thousand volts. THESE
changes are maue 10 feuuce the loss Oh
energy, which always occurs In
transmission over long distance.
The pole Hue ends at the salt Lake
City Railway car barns, IN the rear Of
which power house mas been erected
to receive the current.
For long transmission alternating
current Is far more economical than
direct current, but at present all the
electric street railways are operated by
direct current; hence It Is necessary to
transform the alternating current to
direct to render II suitable for street
Gar motors. For this purpose, there
are placed in the power house al this
end OF the line Two machines called
rotary transformers, somewhat larger,
but otherwise similar to those en-
ployed In the Niagara power house for
the same purpose. The machines are
sometimes called "double enders." as
they have commutalor az one END OF
the armsture anu collector rings at
the other. The collector rings receive
the alternating current which drives
the machine and the comnutRtor
sends out the direct current at the
proper voltage for the street cars.
These machines weigh ABOUT twenty
;hree tons each, run at 4O0 revolutions
pei. minute, and, In appearance are
quite Ike dynamo.
The manufacturers OF the electric
| machinery guarantee the dynamos at
the generating station to deliver to the
wires % per cent OF the power de-
velopeu oy the voter wheels. The
necessary losses In transformation ana