Assertion: commutator | /r/HasProperty | separated by mica insulation
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Source sentences:
text: Such commutators comprise a plurality of copper segments, separated by mica insulation, and supported on mica-covered V-rings, and it is desirable to give each commutator several seasoningA cycles after its nal assembly on the rotor-member of the dynamo-electric machine, and after the electrical connections have been completed between the ycommutatornecks and the armature-conductors. '