Supervisory systems for electric power apparatus

C. E. Stewart: I should like, briefly, to call attention to one or two things of interest. In the first place, supervisory systems have passed the experimental stage. We have had actual service out of the systems so that we know that they are successful in the field for which they are intended. By the end of this year, systems put out by the General Electric Company alone will have supervision over some 2500 oil circuit breakers or their equivalent. We shall have in service a distributor type whereby a dispatcher at a central point will have supervision over breakers located in twenty-two outlying stations.