METHOD FOR TESTING INSULATION IN MANUFACTURING PROCESS OF COIL FOR ROTARY ELECTRICAL MACHINE, AND METHOD OF MANUFACTURING COIL FOR ROTARY ELECTRICAL MACHINE

摘要

PPROBLEM TO BE SOLVED: To enable an insulation test for confirming abnormality between coils of different phases after connection of a neutral point of the coil. PSOLUTION: A method for testing insulation in a manufacturing process of the coil for a rotary electrical machine includes: performing a mounting process for inserting each coil of an U phase, a V phase, and a W phase in a stator iron core firstly in manufacturing the stator coil while arranging inter-phase paper (step 101); performing a neutral point connection process for caulking and connecting the neutral point of each phase coil (step 102); performing a molding process for molding a coil end part (step 103); performing a process of a partial discharge test as an insulation test between different circuit coils of the same phase (step 104); and performing a process for forming a power source terminal (step 105); and next, carrying out a process of various electric tests (step 106). An impulse discharge test of (C) applies an impulse voltage between two phases of each phase coil, and verifies insulation abnormality between the different phases of each phase coil by detecting the existence of occurrence of partial discharge at the time. PCOPYRIGHT: (C)2010,JPO&INPIT