NEMA 6-MW magnet wire Technical Committee chairman's report-2005

Abstract

The most recent issue of NEMA MW 1000, published in 2003 consists of three major parts. Part 1 covers general information about the standard, definitions of terminology and dimensional information that applies to the majority of the standards in Part 2. Part 2 provides specific requirements for more than 60 different magnet wire specifications. Part 3 provides actual test procedures and specific test requirements by AWG size for many of the procedures. Since 2003 there have been a number of changes made in each of these parts of MW 1000. In Part 1, new dimensional requirements have been developed and added for 8-13.5 single build products and additional definitions have been provided for minimum insulation increases and maximum OD's for a number of insulation builds and size ranges. Also, standard dimensions for half AWG sizes have been added for single build from 8-29.5 AWG, for heavy build from 4-29.5 AWG and for triple and quadruple builds from 14-29.5 AWG. In Part 2, several new standards such as MW 37-C and MW 38-C have been added and some of the requirements for other standards have been modified. In Part 3, many tests such as the adhesion and flexibility procedures and requirements have been modified and revised. Finally, some routine test procedures in Part 3 have been reclassified to become periodic test procedures and some periodic test procedures have been modified to allow testing with sizes other than 18 AWG