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Brush the surface is dirty. That most people ignore, normal operation of the generator brush seal in a closed cabinet, set in the middle of the poles brush-shaped gear shaft axial fans, by the rotation of the rotor of graphite carbon powder mill under the brush fever promptly pulled out, to clean the cooling effect. If the door shut lax, or when you forget to close inspection, along with the hot dust outside air into the brush, brush attached to the column, on the one hand affect the brush heat. On the other hand brushes spark cylindrical surface by brush dirty brush dielectric strength between columns is easy enough to ring the fire. Moreover slip ring on a road car with a spiral groove, which is to increase the cooling area of ​​the brush, brush contact with the improvement, the brush more fully cooled while it is easy for the toner pumped. If the door shut lax, fan pumping power shortage outside dust can easily attached to the spiral ditch, the consequences can be imagined. Exciter brush voltage level is relatively low considering the bare, exposed, this is also recommended at regular cleaning maintenance. A few days ago I happened Excitation Brush factory sparkle forced to shut down the event, many reasons, often the little things lead to disaster. We should pay sufficient attention.

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