The modern A-C network calculator

PRODUCTION requires power. The urgent necessity of meeting the immediate demands for electric power — due to national defense and natural growth — has created a challenge to the planning engineers. Local loads are increased and additional loads established, resulting in shifting of load centers. Such changes require increased generating and transmitting facilities. To provide for this expansion in power supply requires accurate planning to avoid waste of time, materials, or effort. The first step is the quick solution of all the electrical problems. The A-C. network calculator provides accurate means for solving these problems. Therefore, it is appropriate to present the newly perfected features of the latest A.C. network calculators. These provide the means and methods for faster and more accurate analysis of existing or planned power systems and the solutions of electrical design and operating problems. The essential elements of a power system are reproduced in miniature replica, as illustrated pictorially in figure 1 for a simple radial feed from generator to load. The calculator reproduces systems with many generators or generating stations, transformers, lines, and loads. Readings of the miniature network on the calculator are readily converted into actual system quantities.