Abstract :
Better protection, more efficiency, and quieter operation are brought out in a new line of polyphase a-c motors announced by the General Electric Company´s Small Integral and Medium Induction Motor Departments. Called Tri-Clad∗ 55, the new motors are the result of more than 250,000 man-hours of developmental engineering and research. Built to latest standard National Electrical Manufacturers Association frame dimensions, they feature entirely new and advanced concepts of motor design.
