1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2003 06 27 Revised Para 3.0 inserted; Para 3.1, 3.2, 3.3, 3.22, 3.23, 4 deleted 2000 09 25 Revised Updated A. Cockman 1965 04 21 Released F6-1511 Printed copies are uncontrolled Copyright 2003, Ford Global Technologies, Inc. Page 1 of 3 COPPER
2、 WIRE, SOFT OR ANNEALED ROUND, SINGLE ESF-M2L42-A HIGH TEMPERATURE MODIFIED POLYESTER AND POLYAMIDE INSULATED 1. SCOPE The material defined by this specification is soft or annealed round copper wire insulated with a single film of high temperature modified polyester resin having a polyamide overcoa
3、t. This is a Class “H“ rated insulation. 2. APPLICATION This specification was released originally for material used for the armature winding on the windshield wiper motors. 3. REQUIREMENTS Material specification requirements are to be used for initial qualification of materials. 3.0 STANDARD REQUIR
4、EMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.4 WIRE SIZE SPECIFICATION The wire size shall be specified on the engineering drawing and/or release according to the American Wire Ga
5、ge number desired. Example: #14 gage ESF-M2L42-A 3.5 COLOR The color of single high temperature modified polyester and polyamide insulation shall be specified on the engineering drawing. 3.6 BARE WIRE The copper wire used as the base wire shall conform to ESF-M2L1-A, except as noted herein. 3.7 JOIN
6、TS Joints made in the insulated wire shall conform to ESF-M2L1-A and shall be covered with a high temperature modified polyester and polyamide film so as to be equally as well covered as other portions of the wire. ENGINEERING MATERIAL SPECIFICATIONESF-M2L42-APrinted copies are uncontrolled Copyrigh
7、t 2003, Ford Global Technologies, Inc. Page 2 of 3 3.8 INSULATION COATING AND THICKNESS The wire shall be coated with a continuous insulating film of high temperature modified polyester having a polyamide overcoat, of such quality as to meet the requirements of this specification. The minimum increa
8、se in the diameter of the wire due to the insulating film and the maximum overall diameter shall be as shown in NEMA MW1000 Part 2, Table S-MW24-C. The addition to the diameter of the bare wire due to the coating shall be determined utilizing the test method shown in NEMA MW1000 Part 2, Table S-MW24
9、-C. 3.9 INTERMEDIATE SIZES For wire sizes between the American Wire Gage sizes, the increase in diameter due to the coating shall be the same as for the next smaller AWG size. 3.10 INSULATION ADHESION No cracks in the (NEMA MW-1000, para 3.2/IEC 851, para 3.5) coating 3.11 INSULATION FLEXIBILITY No
10、cracks in the (NEMA MW-1000, para 3.2/IEC 851, para 3.5) coating 3.12 ELONGATION (NEMA MW-1000, para 3.3/IEC 851, para 4.5) The insulated wire shall meet the requirements of NEMA Table. 3.13 INSULATION SOLUBILITY Insulation shall (NEMA MW-1000, para 3.51/IEC 851, para 4.3) not soften 3.14 SOFTNESS O
11、F COPPER (NEMA MW-1000, para 3.4) The insulated wire shall meet the requirements of NEMA Table. 3.15 UNIDIRECTIONAL SCRAPE RESISTANCE (NEMA MW-1000, para 3.59/IEC 851, para 3.6) The lowest “grams to fail“ load, representing failure of the insulating film, in any one of the three tests shall not be l
12、ess than the minimum value and the average of the three tests shall not be less than the average specified in Table I. 3.16 DIELECTRIC TEST, min 79 kV/mm (NEMA MW-1000, para 3.7/IEC 851, para 5.4) 3.17 CONTINUITY TEST (NEMA MW-1000, para 3.8/IEC 851, para 5.5) The insulated wire shall meet the requi
13、rements of Table I. ENGINEERING MATERIAL SPECIFICATIONESF-M2L42-APrinted copies are uncontrolled Copyright 2003, Ford Global Technologies, Inc. Page 3 of 3 3.18 HEAT SHOCK A sample of coated wire, prepared in accordance with para 3.8 shall be placed in an oven at 220 +/- 2 C for 1 h. No cracks in th
14、e coating shall be visible on size 4 to 40 AWG, when examined with 6X to 10X magnification. 3.19 THERMOPLASTIC FLOW, min 260 C (NEMA MW-1000, para 3.5/IEC 851, para 6.4) 3.20 THERMOPLASTIC FLOW - Increasing Pressure 69 kPa (Sizes 15 - 25 Awg, inclusive) Test Method: Two samples of the wire to be tes
15、ted shall be cut and the ends stripped of insulation. The samples shall be fastened in the specimen holder and connected to the signaling device. The assembly is then positioned directly below the air cylinder on the test fixture, which is mounted in a preheated oven, set at a temperature of 200 +/-
16、 2 C. The assembly shall be allowed to soak in the preheated oven for at least 5 minutes and no more than 10 minutes after the thermometer indicates the oven has recovered its heat. At the end of the time the cylinder shall be lowered and the gage pressure set for 21 kPa. After 30 s, the gage pressu
17、re is increased to 28 kPa and is thereafter increased 7 kPa pressure every 30 s until failure. The gage pressure when the signaling device sounds shall be recorded as the failure point. A minimum of 6 tests shall be run for each sample to determine average value. 3.21 CONFORMITY WITH THIS SPECIFICATION In case of failure under any of the foregoing tests, two additional tests shall be made, and the wire shall be regarded as not meeting the requirements of this specification if the results of either of two additional tests are unsatisfactory.
