1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev. 03 2014 06 20 N-STATUS A. Wedepohl, NA 2003 06 27 Revised Para 3.0 inserted; Para 3.1, 3.2, 3.3, 3.11, 4 deleted 1991 11 22 DF00E00107002091 Released L. Rumao Controlled document at www.MATS Copyright 2014, Ford Global Technologies, Inc.
2、 Page 1 of 2 COPPER WIRE, SOFT ROUND, POLYURETHANE INSULATION ESF-M2L25-A2 WITH POLYAMIDE OVERCOAT, 155 C NOT FOR NEW DESIGN 1. SCOPE The material defined by this specification is a soft round copper wire with a single film high temperature insulation and an overcoat. 2. APPLICATION This specificati
3、on was released originally for material used in the field windings on fractional power motors. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.4 CO
4、LOR The color of the high temperature coating shall be as specified on the engineering drawing. 3.5 BARE WIRE 3.5.1 Size #34 AWG 0.157 - 0.162 mm #36 AWG 0.124 - 0.130 mm #38 AWG 0.099 - 0.104 mm 3.5.2 Electrical Resistivity, max 1.7241 micro ohm/cm (ASTM B 193, at 20 C) 3.5.3 Resistance Resistance
5、for any given wire must fall within the range obtained by calculating resistance for both the high and low diameter. The following formula may be used: Resistivity x Length Resistance = - Cross Section Resistance - micro ohms Resistivity - 1.7241 micro ohm/cm Length - centimeters Cross Section - squ
6、are centimeters 3.5.4 Tensile Strength, max 265 MPa (ASTM B 3) ENGINEERING MATERIAL SPECIFICATION ESF-M2L25-A2 Copyright 2014, Ford Global Technologies, Inc. Page 2 of 2 3.6 JOINTS Each spool of wire shall be one continuous length without any joints. 3.7 COATING 3.7.1 Insulation Coating and Thicknes
7、s The insulation must meet the requirements of Nema Standard MW1000- MW80 C (single) polyurethane resin base with polyamide resin coating, thermal Class 155, except as noted in this specification. 3.7.2 Elongation, min #34 AWG 26% (ASTM B 3, 254 mm gage length) #36 AWG 25% #38 AWG 24% 3.8 ELECTRICAL
8、 RESISTANCE Ohm/m The wire shall be drawn to a resistance: #34 AWG 0.862 +/- 1.0% #36 AWG 1.375 +/- 1.25% #38 AWG 2.160 +/- 1.5% The resistance variation within a spool shall be less than +/- 1% of the nominal value for the spool at a reference temperature of 20 C. 3.9 CONTINUITY, max 15 (Nema MW100
9、0, para 3.8.1.1 or 3.8.1.1.2) 3.10 CONFORMITY WITH THIS SPECIFICATION In the case of failure under any of the foregoing tests, two additional tests shall be made, and the wire shall be regarded as meeting the requirements of this specification if the results of the additional tests are satisfactory.
10、 The wire shall be regarded as not meeting the requirements of this specification if the results of either of the two additional tests are unsatisfactory. 4. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. Contact for questions concerning Engineering Material Specifications. 5. SUMMARY OF REVISIONS 2014 N-Status Added Summary of Revisions and General Info. 2003 06 27 Revised Para 3.0 inserted; Para 3.1, 3.2, 3.3, 3.11, 4 deleted 1992 04 16 Revised 3.5, 3.7 & 3.8 L. Rumao
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