The Measurement of Enameled Wire Specification

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    The enameled wire is a kind of cable wire. The specifications of the enameled wire are all expressed in terms of the diameter of the bare copper wire (the unit is mm). The measurement of enameled wire specification is actually the measurement of the diameter of bare copper wire. It is generally used for micrometer measurement. The accuracy of micrometer can reach 0.01mm. The measurement of enameled wire specification (wire diameter) has direct measurement method and indirect measurement method.

    Direct measurement.In the direct measurement method, the diameter of the bare copper wire is measured directly. The paint skin of the enameled wire needs to be burned first, and the fire method must be used. The wire diameter of the enameled wire used in the series-motor rotor of the electric power tool is very small, and it needs to be burned several times when using fire, otherwise it may blow and affect the efficiency. After burned, the charred leather was wiped clean with a cloth, and the diameter of the bare copper wire was measured with a micrometer. The diameter of the bare copper wire was the size of the enameled wire.

    Indirect measurement. The indirect measurement method is to measure the diameter of the outer circle of the enameled copper wire (including the patent leather), and then according to the diameter of the outer circle of the enameled copper wire (including the patent leather). This method does not use fired enameled patent leather and has high efficiency. If you can know the specific type of enameled copper wire, then check the enameled wire size (wire diameter) is more accurate.

    Whichever method is used, measure different number of roots or sites 3 times to ensure accurate measurements. When the difference between the three measurement data is large, it is possible to use the line and carefully analyze it.

    Whichever method is used, the line should be straightened and measured before measurement to ensure accurate measurement. When the difference between the three measurement data is large, it is also possible that the time line is not straightened. The direct measurement method is generally used for the measurement of the old wire (taken out of the burned-out winding), and the indirect measurement method is generally used for the measurement of the new winding, which is more convenient and faster.

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