Method and apparatus for testing electric motors

Details Method and apparatus for testing electric motors Method and apparatus for testing electric motors

1974-11-18

1976-03-02

Rolinec, R. V.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

With rotor

318490, G01R 3102

Patent

active

039421112

ABSTRACT:
To determine whether a motor is operative, where visual inspection of rotation is impossible or difficult, the motor is energized by connection to an AC source for a short interval to bring the motor to running speed. After lapse of the short interval, the AC source is disconnected and the motor coasts to a stop. An AC detector determines that AC power has been terminated and closes a switch to connect a voltage detector to a memory. The voltage detector amplifies an EMF generated while the motor is acting as a generator as the motor coasts to a stop. The detected voltage sets the memory which energizes a motor rotation indicator. For improved accuracy in the determination of the operativeness of the motor, the motor is caused to be tested a plurality of times as the result of a single operation of a control member by the test operator. To further facilitate the testing operation, the control is arranged to provide a signal to the testing operator effectively positively indicating the operativeness of the motor while yet permitting the operator to have his visual attention elsewhere. A time delay is provided in the provision of the indication signals effectively preventing spurious indications.

REFERENCES:
patent: 2741738 (1956-04-01), Reid
patent: 3004205 (1961-10-01), Barritt et al.

Affiliated with

Also associated with

Rating

Method and apparatus for testing electric motors does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for testing electric motors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for testing electric motors will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1280937