The short circuit fault between motor segments is caused by the metal copper chips falling into the V-groove after turning, the carbon chips and other debris falling into the brush due to poor quality, and the invasion of corrosive substances and dust, which causes the mica sheets to carbonize. Especially when the voltage between segments is high, it is more likely to cause a short circuit between commutator segments, causing ring fire and arcing.
When repairing, first clean up the material that causes the short circuit, use the multimeter resistance range or check light to check if there is no short circuit, then use mica and insulating paint to repair it, and it can be assembled after drying.
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Post time: Dec-10-2024