ANSI/NEMA MW American National Standard Magnet Wire

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Approved as an American National Standard ANSI Approval Date: April 6, 2016 ANSI/NEMA MW American National Standard Magnet Wire Published by: National Electrical Manufacturers Association 1300
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Approved as an American National Standard ANSI Approval Date: April 6, 2016 ANSI/NEMA MW American National Standard Magnet Wire Published by: National Electrical Manufacturers Association 1300 North 17 th Street, Suite 900 Rosslyn, Virginia All rights, including translation into other languages, reserved under the Universal Copyright Convention, the Berne Convention for the Protection of Literary and Artistic Works, and the International and Pan American copyright conventions. NOTICE AND DISCLAIMER (ANSI Accredited Standards Committee) The information in this publication was considered technically sound by the consensus of persons engaged in the development and approval of the document at the time it was developed. Consensus does not necessarily mean that there is unanimous agreement among every person participating in the development of this document. ANSI standards, of which the document contained herein is one, are developed through a voluntary consensus standards development process. This process brings together volunteers and/or seeks out the views of persons who have an interest in the topic covered by this publication. As Secretary of the ANSI Accredited Standards Committee, NEMA administers the process in accordance with the procedures of the American National Standards Institute to promote fairness in the development of consensus. As a publisher of this document, NEMA does not write the document and it does not independently test, evaluate or verify the accuracy or completeness of any information or the soundness of any judgments contained in its standards and guideline publications. NEMA disclaims liability for any personal injury, property or other damages of any nature whatsoever, whether special, indirect, consequential or compensatory, directly or indirectly resulting from the publication, use of, application, or reliance on this document. NEMA disclaims and makes no guaranty or warranty, express or implied, as to the accuracy or completeness of any information published herein, and disclaims and makes no warranty that the information in this document will fulfill any of your particular purposes or needs. NEMA does not undertake to guarantee the performance of any individual manufacturer s or seller s products or services by virtue of this standard or guide. In publishing and making this document available, NEMA is not undertaking to render professional or other services for or on behalf of any person or entity. Nor is NEMA undertaking to perform any duty owed by any person or entity to someone else. Anyone using this document should rely on his or her own independent judgment or, as appropriate, seek the advice of a competent professional in determining the exercise of reasonable care in any given circumstances. Information and other standards on the topic covered by this publication may be available from other sources, which the user may wish to consult for additional views or information not covered by this publication. NEMA has no power, nor does it undertake to police or enforce compliance with the contents of this document. NEMA does not certify, test or inspect products, designs or installations for safety or health purposes. Any certification or other statement of compliance with any health- or safety-related information in this document shall not be attributable to NEMA and is solely the responsibility of the certifier or maker of the statement. Page i FOREWORD This should read ANSI/NEMA MW supersedes ANSI/NEMA MW It has been approved as an American National Standard. This standard is periodically reviewed by the NEMA Magnet Wire Section for revisions considered to be necessary to keep it up to date with changes in technology and regulations. See for additional information. Proposed or recommended revisions should be submitted to: Senior Vice President, Operations National Electrical Manufacturers Association 1300 North 17 th Street, Suite 900 Rosslyn, Virginia MW 1000 was developed by the Magnet Wire Section of NEMA, working closely with representatives of various industries that use magnet wire. At the time this edition was approved, the Magnet Wire Section had the following members: Bridgeport Insulated Wire Company CONDUMEX Elektrisola, Inc. Essex Group, Inc. Magnekón MWS Wire Industries Rea Magnet Wire Company, Inc. Bridgeport, CT México, D.F., México Boscawen, NH Fort Wayne, IN San Nicolas, NL, México Westlake Village, CA Fort Wayne, IN Page ii How to Use This Publication First, review Part 1 for general information. Then in Part 2, locate the specification for the type of insulation and conductor of interest. Part 2 is arranged in numerical order as shown beginning on page 14. The dimensions for each Part 2 MW type are provided in Part 1, beginning with Table 1. The specification in Part 2 will indicate the requirements to be met and will refer to the test procedures and corresponding test values to be attained in Part 3. Part 1 of this publication deals with information common to all types of magnet wire: ordering information, general material requirements, general test conditions, definitions, and manufacturing data in support of thermal rating. This part also includes dimensions with metric equivalents for all bare, minimum insulation increase, and overall dimensions for all Part 2 MW specification requirements. Part 2 consists of product specifications requirements (other than dimensions) for magnet wire with different types of coatings and/or coverings. Insofar as possible, the product specifications are complete on one sheet, since they are arranged to include only one insulation or covering per sheet. The title on each sheet identifies the product. Example: MW 15-C, Polyvinyl Acetal Round Copper Magnet Wire. MW 15-A covers the aluminum version of the same generic product. Part 3 contains the test procedures to be followed and corresponding tables of specific test values to be attained in determining compliance with the requirements given in Part 2. The requirements are consolidated with the test procedures and testing parameters for a given property. An index of the main test paragraphs is provided, beginning on page 14, Part 3 Test Procedures, in the Table of Contents. Annex A provides a cross reference between test procedures in this standards publication and those published by the American Society for Testing and Materials (ASTM). Annex B consists of definitions, requirements, and recommended test procedures for reusable magnet wire packaging, standardized dimensions for spools and reels, and formatting for the labeling of magnet wire products. Annex C provides a cross reference between NEMA and IEC magnet wire specifications. Annex D provides the formulas for determining dimensional requirements of round film-insulated magnet wire and dielectric breakdown, as well as cross-sectional area and resistance calculations. Annex E provides the dimensional criteria for ranges of sizes of rectangular bare, film, and fabric magnet wire products, setting the general rules and guidelines for various traditional yet non-standard rectangular magnet wire products. Annex F provides properties of selected refrigerants determined as suitable alternatives to refrigerant R22 in the Refrigerant Extraction Test, clause Annex G provides recommended winding tensions for round copper and aluminum magnet wire to ensure that wire, as it is de-reeled, is not stretched beyond end user requirements. Annex H provides the test methods and requirements for fully insulated winding wire (FIW) referenced in specification MW 85-C in Part 2. Page iii Summary of Revisions Introductory Material Updated Foreword... i Updated How to Use this Publication...ii Updated Tables of Contents...iv Part added for all normative references, with new references to ASTM B233, UL 746B and UL added for other non-normative references revised to specify aluminum EC 1350 alloys editorially reorganized for improved clarity editorially modified for improved clarity revised to expand and update the Part Numbering Identification (PIN) table...11 Tables replaced with former Tables E-4 and E-5; all subsequent tables renumbered Part 2 MW 36-A revised to reference the Bend method for determining Dielectric Breakdown requirements for specified Heavy film-insulated wire sizes MW 36-C revised to clarify which Dielectric breakdown the requirements are determined according to the Bend method in MW 41-C and 44-C revised to clarify the methods used for determining compliance with Adherence and Flexibility requirements according to wire size MW 86-A, 86-C, 87-A and 87-C added as new specifications Part 3 New Bend method added for determining compliance with Adherence and Flexibility requirements for large round glass fiber or polyester/glass fiber covered bare or film insulated wires... 5 Table 31 revised to indicate that elongation requirements for film-insulated round wire also apply to bare wire Tables 34 and 35 (formerly Tables 38 and 39) expanded to include sizes AWG Annex C Revised to remain current with NEMA and IEC standards activities through C-1 Annex E Revised to move Tables E-4 and E-5 to Part 1 as Tables 13 and 14...E-1 Page iv Contents Foreword... i How to Use This Publication...ii Part 1 General 1.1 Scope References Normative References Other References Definitions Materials Conductors Round, Square, Rectangular, Copper, Aluminum Insulating Materials Manufacturing Application of Insulation Intermediate Sizes Joints Packaging Test Conditions and Parameters Safety Statement Selection of Specimens Ambient Conditions of Test Power Frequency Mandrels Rectangular and Square Wire Round Wire Periodic Conformance Retests Units Of Measure Thermal Class Of Magnet Wire Ordering Information Product Identification Number Minimum Ordering Data De-Reeling (Winding) Tension...12 Page v Tables Table 1 Table 2 Table 3 Table 4 Table 5 Table 6 Table 7 Table 8 Table 9 Table 10 Table 11 Table 12 Table 13 Table 15 Table 16 Table 17 Table 18 Table 19 Table 20 Table 20 Table 21 Table 22 Table 23 Dimensions for Bare and Film-Insulated Round Magnet Wire...13 Round Copper Wire, Ultra-Fine Sizes by Resistance...23 Dimensions for Round Film-Insulated Self-Bonding Magnet Wire...24 Dimensions for Single Glass Fiber Covered Round Bare Single Film-Coated and Heavy Film-Coated Wire...28 Dimensions for Double Glass Fiber Covered Round Bare Single Film-Coated and Heavy Film-Coated Wire...30 Dimensions for Single Polyester Glass Fiber Covered Round Bare Single Film-Coated and Heavy Film-Coated Wire...32 Dimensions for Double Polyester Glass Fiber Covered Round Bare Single Film-Coated and Heavy Film-Coated Wire...34 Dimensions, Radii, and Cross-Sectional Area for Standard Rectangular Bare Wire...36 Bare Rectangular Conductor Tolerances...38 Film-Insulated Rectangular Magnet Wire Increase in Thickness and Width Due to Film Coating...38 Dimensions of Square Bare Wire...38 Heavy and Quad Film-Insulated Square Magnet Wire Increase in Dimensions Due to Film Coating...39 Increase in Dimensions for Glass Fiber Covered Rectangular Magnet Wire...41 Single Glass Fiber Covered, Heavy Film-Insulated Square Copper Magnet Wire Minimum Increase and Maximum Overall Dimensions Due to Insulation...43 Single Polyester Glass Fiber Covered Heavy Film-Insulated Square Copper Magnet Wire Minimum Increase and Maximum Overall Dimensions Due to Insulation...44 Double Glass Fiber Covered, Bare or Heavy Film-Insulated Square Copper Magnet Wire Minimum Increase and Maximum Overall Dimensions Due to Insulation...45 Double Polyester Glass Fiber Covered, Bare or Heavy Film-Insulated Square Copper Magnet Wire Minimum Increase and Maximum Overall Dimensions Due to Insulation...46 Comparison Between AWG and IEC R-40 Series Bare Wire Diameters...47 Comparison Between NEMA and IEC Increases and Overall Diameters (inches)...49 Comparison Between NEMA and IEC Increases and Overall Diameters (mm)...51 Dimensions for Tape-Covered Round Magnet Wire (inches)...53 Increase in Dimensions of Rectangular Wire Due to Tape Covering...55 Dimensions for Tape-Covered Square Magnet Wire (inches)...55 Page vi Part 2 Properties and Requirements Specification Number Thermal Class Round Rectangular and Square MW 5-C Polyester (Single and Heavy) 155 X 2 MW 15-A Polyvinyl Acetal (Single and Heavy) 105 X 3 MW 15-C Polyvinyl Acetal (Single, Heavy, Triple, Quad) 105 X 4 MW 16-C Polyimide (Single, Heavy, Triple, Quad) 240 X 5 MW 18-A Polyvinyl Acetal (Heavy and Quad) 105 X 6 MW 18-C Polyvinyl Acetal (Heavy and Quad) 105 X 7 MW 19-C Polyvinyl Acetal with Self-bonding Overcoat (Types 1, 2, and 3) Page No. 105 X 8 MW 20-C Polyimide (Heavy and Quad) 240 X 9 MW 24-A MW 24-C MW 28-A MW 28-C Polyamide (Single and Heavy) Polyamide (Single, Heavy, Triple) Polyurethane Overcoated with Polyamide for Solderable Applications (Single and Heavy) Polyurethane Overcoated with Polyamide for Solderable Applications (Single and Heavy) 155 X X X X 13 MW 30-C Polyester (amide)(imide) (Single, Heavy, Triple) 180 X 14 MW 31-A Paper Covered 90 or 105 X 15 MW 31-C Paper Covered 90 or 105 X 16 MW 33-A Paper Covered Bare Rectangular and Square 90 or 105 X 17 MW 33-C Paper Covered Bare Rectangular and Square 90 or 105 X 18 MW 35-A MW 35-C MW 36-A MW 36-C MW 37-C MW 38-C Polyamideimide (Single and Heavy) Polyamideimide (Single, Heavy, Triple, Quad) Polyamideimide (Heavy and Quad) Polyamideimide (Heavy and Quad) Polyamideimide (Single, Heavy and Triple) Polyester (amide)(imide) overcoated with polyamideimide (Heavy and Quadruple) 220 X X X X X X 24 MW 41-C Glass Fiber Covered (Single and Double) 155 X 25 MW 42-C Glass Fiber Covered (Single and Double) 155 X 26 MW 43-C MW 44-C MW 45-C Glass Fiber Covered Silicone Treated (Single and Double) Glass Fiber Covered Silicone Treated (Single and Double) Polyester Glass Fiber Covered (Single and Double) 200 X X X 29 Page vii Specification Number MW 46-C MW 47-C MW 48-C MW 50-C MW 51-C MW 52-C MW 53-C Polyester Glass Fiber Covered (Single and Double) Polyester Glass Fiber Covered Silicone Treated (Single and Double) Polyester Glass Fiber Covered Silicone Treated (Single and Double) Glass Fiber Covered, High-Temperature Organic Varnish Treated (Single and Double) Polyester Glass Fiber Covered, High- Temperature Organic Varnish Treated (Single and Double) Glass Fiber Covered, High-Temperature Organic Varnish Treated (Single or Double) Polyester Glass Fiber Covered, High- Temperature Organic Varnish Treated (Single and Double) Thermal Class Round Rectangular and Square Page No. 155 X X X X X X X 36 MW 60-A Aromatic Polyamide Paper Covered (Paper) 220 X 37 MW 60-C Aromatic Polyamide Paper Covered (Paper) 220 X 38 MW 61-A Aromatic Polyamide Paper Covered (Paper) 220 X 39 MW 61-C Aromatic Polyamide Paper Covered (Paper) 220 X 40 MW 64-A Aromatic Polyimide Tape Covered 240 X 41 MW 64-C Aromatic Polyimide Tape Covered 240 X 42 MW 65-A Aromatic Polyimide Tape Covered 240 X 43 MW 65-C Aromatic Polyimide Tape Covered 240 X 44 MW 72-C MW 73-A MW 73-C Polyester (amide)(imide) for Hermetic Applications (Heavy) Polyamideimide for Hermetic Applications (Heavy) Polyamideimide for Hermetic Applications (Heavy, Triple, Quad) 180 X X X 47 MW 74-A Polyester (amide)(imide) (Single and Heavy) 220 X 48 MW 74-C Polyester (amide)(imide) (Single and Heavy) 200 X 49 MW 75-C MW 76-A MW 76-C Polyurethane for Solderable Applications (Single and Heavy) Polyamide (Single and Heavy) Polyamide (Single, Heavy, Triple) 130 X X X 52 MW 77-C Polyester (imide) for Solderable 180 X 53 MW 78-C Polyester (imide) 180 X 54 MW 79-C Polyurethane for Solderable Applications (Single, Heavy and Triple) 155 X 55 Page viii Specification Number MW 80-A MW 80-C Polyurethane Overcoated with Polyamide for Solderable Applications (Single and Heavy) Polyurethane overcoated with polyamide for solderable applications (Single, Heavy, Triple) Thermal Class Round Rectangular and Square Page No. 155 X X 57 MW 81-C Polyamideimide (Single and Heavy) 220 X 58 MW 82-C MW 83-C Polyurethane for solderable applications (Single, Heavy, Triple) Polyurethane overcoated with polyamide for solderable applications (Single, Heavy, Triple) 180 X X 60 MW 84-C Polyamideimide Film-Insulated 220 X 61 MW 85-C Polyurethane Fully Insulated 180 X 62 MW 86-A Polyvinyl Acetal (Single and Heavy) 120 X 63 MW 86-C Polyvinyl Acetal (Single, Heavy, Triple) 120 X 64 MW 87-A Polyvinyl Acetal (Heavy and Quad) 120 X 65 MW 87-C Polyvinyl Acetal (Heavy and Quad) 120 X 66 MW 102-A Polyester (amide)(imide) 180 X 67 MW 102-C Polyester (amide)(imide) 180 X 68 MW 130-C MW 131-C MW 132-C MW 135-C MW 136-C MW 137-C Polyurethane with self-bonding overcoat (Type 1 and Type 2) Polyurethane with self-bonding overcoat (Type 1 and Type 2) Polyurethane with Self-Bonding Overcoat (Type 1 and Type 2) Polyurethane overcoated with polyamide and self-bonding overcoat (Type 1 and Type 2) Polyurethane overcoated with polyamide and self-bonding overcoat (Type 1 and Type 2) Polyurethane Overcoated with Polyamide and Self-Bonding Overcoat (Type 1 and Type 2) 130 X X X X X X 74 Part 2 Properties and Requirements Listing by Thermal Class, Film Insulation, Coating, Covering and Form Thermal Class Film Insulation, Coating, Covering, and Form See Part 2, Specification No. Aluminum Copper Page No. FILM-INSULATED ROUND MAGNET WIRE 105 Polyvinyl Acetal MW 15-A MW 15-C 3, Polyvinyl Acetal and Self-bonding Overcoat - MW 19-C Polyvinyl Acetal MW 86-A Polyvinyl Acetal MW 86-C Polyvinyl Acetal MW 87-A 65 Page ix Thermal Class Film Insulation, Coating, Covering, and Form See Part 2, Specification No. Aluminum Copper Page No. 120 Polyvinyl Acetal MW 87-C Solderable Polyurethane Overcoated with Polyamide MW 28-A MW 28-C 12, Solderable Polyurethane - MW 75-C Solderable Polyurethane with Self-bonding Overcoat - MW 130-C Solderable Polyurethane Overcoated with Polyamide and Self-bonding Overcoat - MW 135-C Polyester - MW 5-C Polyamide MW 24-A MW 24-C Solderable Polyurethane - MW 79-C Solderable Polyurethane Overcoated with Polyamide MW 80-A MW 80-C 56, Solderable Polyurethane with Self-bonding Overcoat - MW 131-C Solderable Polyurethane Overcoated with Polyamide and Self-bonding Overcoat - MW 136-C Polyester (amide)(imide) - MW 30-C Polyamide Polyamideimide and Self-bonding Overcoat MW 76-A MW 76-C 51, 52 MW 102-A MW 102-C 67, Solderable Polyester (imide) - MW 77-C Solderable Polyester (imide) Overcoated with Polyamide - MW 78-C Hermetic Polyester (amide) (imide) - MW 72-C Solderable Polyurethane - MW 82-C Solderable Polyurethane Overcoated with Polyamide - MW 83-C Solderable 180 Solderable 180 Solderable 200 Polyurethane Fully Insulated FIW Zero-Defect Insulated Round Copper Wire for Solderable Applications Solderable Polyurethane with Self-bonding Overcoat Solderable Polyurethane Overcoated with Polyamide and Self-bonding Overcoat Polyester (amide) (imide) Overcoated with Polyamideimide - MW 85-C 62 - MW 132-C 71 - MW 137-C 74 - MW 35-C Polyester (amide)(imide) - MW 74-C Hermetic 220 Polyamideimide Polyamideimide MW 73-A MW 37-C Polyester (amide)(imide) MW 74-A Polyamideimide MW 81-C Hermetic Polyimide - MW 16-C 5 Page x Thermal Class Film Insulation, Coating, Covering, and Form See Part 2, Specification No. FILM-INSULATED RECTANGULAR AND SQUARE WIRE Aluminum Copper Page No. 105 Polyvinyl Acetal MW 18-A MW 18-C 6, Polyamideimide Polyamideimide Polyamideimide - MW 36-C 22 MW 36-A MW 38-C Polyamideimide MW 84-C Polyimide - MW 20-C 9 FIBROUS COVERED ROUND MAGNET WIRE 90 or 105 Paper Covered MW 31-A MW 31-C 15, Glass Fiber Covered - MW 41-C Polyester Glass Fiber Covered - MW 45-C Glass Fiber Covered, High-Temperature Organic Varnish Treated Polyester Glass Fiber Covered, High- Temperature Organic Varnish Treated - MW 50-C 33 - MW 51-C Glass Fiber Covered, Silicone Treated - MW 44-C Polyester Glass Fiber Covered, Silicone Treated - MW 47-C Aromatic Polyamide Paper Covered MW 61-A MW 61-C 39, Aromatic Polyimide Tape Covered MW 65-A MW 65-C 43, 44 FIBROUS COVERED RECT
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