Under normal circumstances, of course, there should be no ignition. The generator slip ring will be pitted to varying degrees due to frequent ignition of the carbon brush. Haha, the bottom line is that it is. must be The generator slip ring has been rotated to restore its smooth surface.
The surface area of the slip ring is one thing. The most important thing is the carbon brush itself. You can't just look at the wear of the carbon brush. You should also check if the gap is significant. between the brush holder and the carbon brush is suitable, and the circlip. Whether the elasticity of the carbon brushes is appropriate and whether the brushes are discolored. In addition, you can also use a clamp meter to check whether the current distribution of each carbon brush. is uniform. If it is uneven it will cause the individual carbon brushes to spark. The quality of the broomss carbon brushes themselves is also very important, some manufacturers' carbon brushes simply like to waste toner. inevitably catches fire. In short, it depends on the real situation! Hope this helps!
Consequences caused by sparks from the carbon brushes of the generator:\x0d\Slight sparks from the carbon brushes in the generator have no effect if not dealt with in time, the sparks will become increasingly larger, causing significant heat and burning the engine. carbon brushes and slip ring, causing the excitation circuit to be interrupted or the brush holder to burn. \x0d\\x0d\Generator carbon brush ignition processing methods and precautions:\x0d\1 The brushes are poorly ground and the contact area is small. The brushes must be ground or the generator must operate for a long time under low load until. Grind until it's good.\x0d\2 The connection eBetween the brush and the lead wire, the lead wire and the terminal block are loose and the contact resistance is large, causing uneven load distribution. Check the contact between the brush and the terminal block. copper braid and if the screws of the connection circuit are tight, whether the contact is good.\x0d\3 The brand of the brush does not comply with the regulations, or brushes of a different brand are used. To check the brand of the brush, replace it. with the brush specified by the manufacturer or adapted after testing.\x0d\ 4 Brush pressure is uneven or does not meet requirements. Use a spring scale to check brush pressure and make adjustments (brush pressure should agree with this). manufacturer's regulations, generally 0.2 ~ 0.3 MPa). Pay special attention to making the pressure of each brush uniform.\x0d\5 Brushes are worn when the brushes are shortened to thespecified value, they must be replaced. x0d\6 Slip ring and brush surfaces are dirty. Depending on the degree of dirt, this can occur on individual brushes or on individual brushes. Sparks occur on all brushes. Use a white cloth dampened with a little alcohol to wipe. slip ring, wipe the brush surface with a clean white cloth, and cover the grinding tool with fine sandpaper to grind the slip ring.