Generator carbon brush fire notes

Generator carbon brush fire notes

1, bad brush grinding, contact area is small. The brush should be reground or the generator should be operated under low load for a long period of time until it has been ground.

2. The connection between the brush and the lead, the lead and the terminal is loose, and the contact resistance is large, causing uneven load distribution. Check the contact between the brush and the copper cymbal and whether the screws in the lead circuit are tight and the contact is good.

3, brush brand does not meet the requirements, or part of the use of different brands of brushes. As a result of checking the brush grade, replace it with a brush specified by the manufacturer or tested as appropriate.

4, uneven brush pressure, or does not meet the requirements. Use a spring to check the brush pressure and adjust it (the pressure of the brush should be in accordance with the manufacturer's specifications, generally 0.2~0.3MPa), paying special attention to uniform pressure of each brush.

5, brush grinding short. Brush grinding must be replaced when it is shorter than the specified value.

6, slip ring and brush surface is not clean, with the degree of unclean, may be in the individual brush, spark may also occur in all brushes. Use a white cloth dipped in alcohol to wipe the slip ring. Wipe the surface of the brush with a clean white cloth. Grind the slip ring with a fine glass sandpaper.

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