Abstract :
Transformer testing has already received a great deal of attention, and considering the number and variety of articles upon the subject which have appeared, the ground would seem to be quite thoroughly covered, so thoroughly in fact that there would at first sight appear little more to add. But in view of the changes which have been constantly taking place and the rapid advance in transformer design, a general discussion of the subject at this time may be of value. Experience also has led to the adoption of certain methods in commercial transformer testing which for various reasons have proved satisfactory, so that a description of these with their advantages and short-comings will perhaps prove of some interest.
