Abridgment of short-circuit testing on Alabama power company system: Its procedure and effects on operation

This paper sets forth the reasons for making short-circuit tests upon the system of the Alabama Power Company and describes the methods of testing. The results of the early tests clearly demonstrated the necessity for making such tests and the need for adequate facilities to gather data essential to a full knowledge of the limitations of electrical equipment under actual operating conditions. A description of the modern test equipment installed in the last two years, and the method of procedure in making tests are given. A discussion of the results obtained brings out the point that the expenditures for complete testing facilities have been fully justified and have resulted in the installation of better equipment, improved protection, and a higher grade of service to customers.