Suggested specifications for testing high-voltage insulators

As an outcome of the New York meeting of the Institute, last December, at which meeting were presented and discussed two papers bearing on the subject of insulator testing, the High-Tension Transmission Committee is endeavoring to draw up a “model” or “skeleton” insulator test specification, which may be approved either by the High-Tension Transmission Committee or the Standards Committee or by the Board of Directors. In pursuance of this object, the Committee has secured two tentative specifications (1) that of Mr. Peek, written from the point of view of the expert tester and scientist, and (2) that of Mr. Sanford, written from the point of view of the manufacturer. The Chairman of the Committee has prepared a single specification (3) from these two, in the light of comments thereon received from the High-Tension Transmission Committee and others, and has endeavored to embody in a single specification, the best features of the other two. These three specifications follow.