NEMA equipment subcommittee report on magnet wire testing

摘要

The NEMA equipment subcommittee is in the process of investigating several different magnet wire testing procedures and will be proposing and issuing some of these revisions to MW-1000-1993 in the near future. This paper highlights four of the magnet wire tests being addressed by this subcommittee. They are: (1) high voltage continuity testing using a carbonized foam electrode; (2) dry-out procedures for retesting dielectric breakdown and high voltage continuity; (3) a solderability holder for testing fine wire; and (4) test weights for evaluating thermoplastic flow for a range of copper magnet wire sizes.