H - Electricity – 02 – H
Patent
H - Electricity
02
H
318/50
H02H 7/085 (2006.01) G01D 1/14 (2006.01) G01D 9/00 (2006.01) G07C 3/00 (2006.01) H02H 1/00 (2006.01)
Patent
CA 1322778
ABSTRACT A MONITORING SYSTEM A monitoring system for an electric motor comprising a temperature sensor (5) for monitoring the operating temperature of a motor, memory means (4) in which is stored the absolute maximum operating temperature and a predetermined maximum permitted operating temperature of the motor, and indicator means (6) for indicating the sensed temperature as lying:- a) within a safe operating range, below the predetermined maximum permitted operating temperature; b) within a hazardous operating range, between the predetermined maximum permitted operating temperature and the absolute maximum operating temperature; and c) at or above a dangerous operating range, lying at and above the absolute maximum operating temperature. The monitoring system further comprises recording means (3) for recording the number of times the motor is operated beyond the predetermined maximum permitted operating temperature and the number of times the motor is operated beyond the absolute maximum operating temperature.
591445
Bereskin & Parr
Fenner (j. H.) & Co. Limited
Mallett Dudley C.
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