Insulating material used to electrically separate the commutator segments

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The insulating material used to electrically separate the commutator segments is typically made of mica, a natural mineral known for its excellent insulating properties and heat resistance. Mica sheets are cut and inserted between the segments to prevent electrical arcing and shorts. Other materials used for insulating commutator segments may include synthetic resins, fiberglass, and ceramics. Proper insulation is essential to ensure the smooth and efficient operation of a motor or generator.
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