. Journal of electricity . ding. THE OIL CONSERVATOR BY W. C. SMITH (The latest development in oil immersed transform-ers, described here by a transformer sales engineerof the General Electric Company, is of especial in-terest to men of the West where this type of trans-former is used extensively. Those who know thefaults of the oil transformer will appreciate the an-nouncement that the Oil Conservator eliminatesbreathing, tends to avoid the possibility of ex-plosion and to eliminate oil decomposition.—TheEditor.) In oil immersed transformers, the oil performstwo functions, that of an insulati
. Journal of electricity . ding. THE OIL CONSERVATOR BY W. C. SMITH (The latest development in oil immersed transform-ers, described here by a transformer sales engineerof the General Electric Company, is of especial in-terest to men of the West where this type of trans-former is used extensively. Those who know thefaults of the oil transformer will appreciate the an-nouncement that the Oil Conservator eliminatesbreathing, tends to avoid the possibility of ex-plosion and to eliminate oil decomposition.—TheEditor.) In oil immersed transformers, the oil performstwo functions, that of an insulating and of a coolingmedium. To preserve these qualities it is necessaryto maintain its dielectric strength and its ability tocirculate freely. The Oil Conservator has been de-veloped for preserving these qualities of transformeroil. It will also prevent deterioration of the solidinsulation and will eliminate explosions due to theignition of combustible gases which may collect abovethe oil in the ordinary transformer The Oil Conservator which is a newform of tank for static transformers The oil conservator consists of an auxiliarytank mounted above the main tank and connected to its highest point by asuitable pipe. Under op-erating conditions the oilcompletely fills the maintank. The size of theauxiliary tank is gov-erned by the expansionand contraction of the oildue to changes in tem-perature. At the lowestoperating temperature,the oil must not contractso as to allow air to enterthe main tank and at themaximum temperaturethe oil must not overflowthe conservator. The pipe between thetwo tanks is of such asection that oil expansionwill take place withoutallowing free circulationof oil. The presence of moisture in transformers hasa most harmful effect, not only on the oil but on thesolid insulation. Oil having a dielectric strength of22 kv. between one-inch disks spaced 1/10 inch apartcontains not more than eight parts of water in onemillion parts of oil. An additional IOI
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectelectricity, bookyear
