File:Annual report 1921 (1921) (14768201902).jpg

Identifier: annualreport1921onta (find matches)
Title: Annual report 1921
Year: 1921 (1920s)
Authors: Ontario Hydro Hydro-Electric Power Commission of Ontario Ontario Hydro International Inc
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Contributing Library: Robarts - University of Toronto
Digitizing Sponsor: University of Guelph, University of Windsor, York University and University of Toronto Libraries

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ations in the Niagara River. The supply to the Niagara System from the Niagara High Tension Sta-tion has been practically continuous, power being on the System 99.987 percent, of the total time. In only one instance was there a total interruptiondue to failure of station equipment, and that for a very short period. Whenone realizes the immensity of the net work of lines, the great number of sta-tions and amount of equipment connected to this net-work, the above figuresare truly remarkable. Such results can only be obtained through the installa-tion of first-class, up-to-date equipment and with constant inspection and at-tention to the same. Electrical storms were experienced on sixty-four days during the periodof March 5th to October 17th; seven of these were general to the System, fivebeing particularly severe. The lightning arrester equipment on the high ten-sion lines at the different stations functioned properly, so that in no instancewere any high tension lines put out of action.
Text Appearing After Image:
1922 HYDRO-ELECTRIC POWER COMMISSION 61 In order to take care of the increasing power demands in the variouslocalities, the transformer capacity at a number of stations was increased dur-ing the past year. At Kitchener High Tension Station a bank of three 2,500k.v.a. units replaced a bank of three 750 k.v.a. units; at Etobicoke Station one1,500 k.v.a. three-phase unit was placed in service; at Petrolia a bank of three150 k.v.a. units was replaced with a bank of three 300 k.v.a. transformers;at Oil Springs one 50 k.v.a. three-phase unit was replaced with a 75 k.v.a.three-phase unit; at Port Stanley the capacity was increased from 225 k.v.a.to 300 k.v.a., and at the Essex Distributing Station a 75 k.v.a. three-phasetransformer was replaced with one 150 k.v.a. three-phase unit. At presentthe work of increasing the transformer capacity at the Kent and Essex HighTensions Stations is in progress; at Kent a bank of three 2,500 k.v.a. trans-formers is to replace a bank of three 1,250 k.v.a. u

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