Electrical news and engineering . ing or from the generator room,or from both, and may be discharged either into the atmos-phere or through ducts into the diflferent sections of thebuilding, for heating purposes. With five units operating,the heat available from this source will be the equivalent kw. per 1,000 cu. ft. of building content—an amount suf-ficient for heating the building in the coldest temperatures. According to ratings, the maximum observable tempera-ture which any portion of the units may attain, as indicatedby thermo-couples, will not be in excess of 105 degreesCentigrade
Electrical news and engineering . ing or from the generator room,or from both, and may be discharged either into the atmos-phere or through ducts into the diflferent sections of thebuilding, for heating purposes. With five units operating,the heat available from this source will be the equivalent kw. per 1,000 cu. ft. of building content—an amount suf-ficient for heating the building in the coldest temperatures. According to ratings, the maximum observable tempera-ture which any portion of the units may attain, as indicatedby thermo-couples, will not be in excess of 105 degreesCentigrade, WTth 40 degrees Centigrade ambient air. Eachthermo-couple indicates the temperature both on the con-trol pedestal near the generator and also in the control are protected by differential relays which openthe main and field circuits, shut dcnvn ventilator fans andclose dampers in the air ducts. .\ generator, complete, weighs ,000 lbs., the rotorlbs. Transformersbe five banks of three transformers connected. of 110,000 which is being delivered to the existing110,000 volt system at Niagara Falls for transmission tovarious points throughout southwestern Ontario. The generator type is vertical, with direct connectedexciter. Each unit will be capable of operating continuouslyat 49,500 Ic^.a., with either voltage or current 10 per centin excess of the rated value. At 80 per cent power factor theover-all efficiency of the generators will be slightly in excessof 97 per cent. The thrust bearing is designed to support a load of1, lbs. This is slightly in excess of the weight of delta to Y to give 110,000 to 132,000 volts, at rated are of the shell type, and individually rated at 25 cycle, ,000. They are per cent efficient at 80 per cent power factor. Theweight of a complete transformer is 100 tons; this includes6,500 Imperial gallons of oil, which is required with eachtransformer for cooling purpo
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Keywords: ., bo, bookcentury1800, bookdecade1890, bookidelectricalnewsen31donm
