Abstract :
The present trend to interconnection and the installation of large capacity stations, with the changing character of city load, make relief of the operating crew of a system of the greatest importance. This can best be done by the use of automatically controlled substations in the various types of service. Equipment for each class of service is in successful operation showing great dependability and any particular problem of the operating companies can be attached, keeping in mind certain fundamentals of design, construction and application.
