Review of Work of Sub-Committee on Wave Shape Standard of the Standards Committee

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Abstract
The paper gives a review of the work donie during the past three years by a sub-committee of the Standards Committee of the Institute appointed to make recommendations for changes in the Institute's ruiles regarding the wave shape of alternators. After a very careful consideration of the question and a large amount of experimental work the Sub-Committee last spring made recommendations that for the present the ten per cent deviation rule should be retained without change (except in wording), and that trial use should be made of a supplementary wave shape factor. The new factor, based on the relation between voltage wave shape and interfering effect in telephone circuits, when power and telephone lines parallel each other, is called the ``telephone interference factor.'' The committee invites the broadest discussion and trial use of the new factor. No attempt will be made to decide upon limiting values of the factor until after wide experience shall have been obtainled in its use, and the committee will welcome assistance on the part of any interested in collecting information to this end.

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