Title :
Motor overload protectors on shipboard
Author :
Grigg, J. C. ; Watkins, J. E.
Author_Institution :
Bureau of Ships, United States Navy Department, Washington, D. C.
Abstract :
At the present time, the bureau of Ships uses separately mounted-magnetically or thermally-actuated relays to protect a-c motors from overload, single-phase, and locked rotor conditions. With the advent of silicone-insulated motors requiring different overload relay characteristics, the development of relays operating on the actual motor winding temperature was undertaken.
Keywords :
Electrical resistance measurement; Relays; Resistance; Rotors; Steady-state; Temperature measurement; Windings;
Journal_Title :
Electrical Engineering
DOI :
10.1109/EE.1948.6444498
