How to Know if the Carbon Brush is Damaged?

[Cunha]

The brush overheats during operation, produces loud noises, or is damaged; excessive sparking occurs during brush operation. The contact area between the carbon brush and the slip ring is less than 70%. The spring pressure of the carbon brush is inappropriate, etc. Look inside through the cooling hole next to the carbon brush cover. If obvious sparking is visible, it indicates the carbon brush is damaged and should be replaced. Impact of damaged carbon brushes on performance. Failure to replace them promptly can damage the rotor's copper segments and also lead to poor contact during operation. It is also detrimental to the coils, reducing the machine's power output. The machine will overheat, decreasing its service life.