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Slip ring fever serious emergency

Edit: ByTune Electronics Co.,Ltd    Date: 2015-09-15
source:

(1) when the temperature reached 120 degrees or more, replace the carbon brush or measures have failed to reduce the overall temperature of the adjustment brush, because the new carbon brush and slip ring contact area is small and is not smooth, combined with the poor working environment, no matter how much electricity distribution, heat transfer to high temperature short time and therefore does not work well. Due to the high temperature, all the poor working conditions of carbon brushes, brush, temperature short-term will not only fail to reduce, and will probably continue to rise. At this time the most important measures is to identify causes of failure, lower working temperature, improve the working conditions of the carbon brushes, brush holders.

(2) using the method of extraction of fault of carbon brush

If normal operation, current and temperature change, and brush serious rise of temperature, vibration in some brush, and this situation is likely to be caused because a small amount of carbon brush fault (such as resistance increases, reduce spring pressure, and carbon credit card astringent, carbon brush fault discrimination, etc). At this point to accurately judge the causes of fever of carbon brush, be removed to eliminate the "black sheep". The others a working brush again to work correctly, enter the normal equilibrium. The key to this approach is to make accurate judgments, fault carbon brushes the General performance of the vibration is large, large currents, its temperature is higher than the overall temperature.


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