ROTARY ELECTRIC MACHINE AND MEASURING METHOD FOR SHORT-CIRCUITING IN LAMINATED STEEL PLATE OF ROTARY ELECTRIC MACHINE

摘要

PROBLEM TO BE SOLVED: To accurately and easily detect short-circuiting in the core steel plate of a rotary electric machine.

SOLUTION: Multiple laminated steel plates 3 provided with a slot 6 for housing an armature coil are laminated in the axial direction to form a stator core 1. The stator core 1 is integrally fastened with through bolts 8 inserted into multiple through holes 7 provided in predetermined places in the stator core 1 and penetrating the stator core in the axial direction to construct a rotary electric machine. This rotary electric machine is provided with exciting coil installation holes 14 for measuring short-circuiting in the laminated steel plates 3 which penetrate the central part of each through bolt 8. When a short-circuiting portion of the laminated steel plates 3 is measured, a coil 1a for short-circuiting portion measurement is inserted into an exciting coil installation hole 14 and the coil 1a is wound in series between adjoining through bolts 8.

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