Brush wear monitor

Details Brush wear monitor Brush wear monitor

G - Physics

01

R

324/17

G01R 31/34 (2006.01) G08B 21/18 (2006.01)

Patent

CA 1217816

Abstract A brush wear monitor system for dynamoelectric machines includes a sensor imbedded in a brush to pro- vide a signal indicating a predetermined amount of brush wear. The brush wear signal is provided through an isolation network to an indicator circuit. The indi- cator circuit includes a first indicating lamp which is illuminated in the absence of a signal from the brush wear sensor to indicate normal operation and a second indicator lamp which is illuminated only in response to receipt of a brush wear signal from the sensor. Upon receipt of a signal the first indicator lamp is extin- guished and the second indicator lamp is illuminated. A manually operated test switch is provided to check the operation of the indicator circuit.

453822

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