Voltage variation at consumers´ terminals

The first part of this report deals with the distribution of voltage-variation characteristic of electricity supply systems in this country, a subject apparently not hitherto investigated, and contains novel suggestions as to the preparation and study of records of this character. The second part deals with the effect of variation upon the performance of different classes of electrical apparatus. The third part contains a general survey of the problem of control of voltage variation from a theoretical standpoint, but leading to conclusions of practical interest. This is followed by a summary of Conclusions. The reader is warned against assuming that calculations and examples representing extreme or exceptional conditions are r¿epresentative of general practice. A clear distinction is drawn in the text between normal and abnormal cases. Further consideration is being given to methods of measurement, more especially instrumental methods. Meanwhile the Director of the Electrical Research Association will welcome comments and suggestions from those who may have occasion to make use of this report.