1、Designation: D1676 03 (Reapproved 2011)An American National StandardStandard Test Methods forFilm-Insulated Magnet Wire1This standard is issued under the fixed designation D1676; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the
2、year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 These test methods cover procedures for testing film-insulated magnet wire that is used in electrical apparatu
3、s.Thesetest methods are intended primarily for the evaluation of theelectrical insulating materials used. The intent is that these testmethods be used, except where modified, by individual speci-fications for particular applications.1.2 These test methods present different procedures forevaluating g
4、iven properties of round, rectangular or square,copper or aluminum film-insulated magnet wire.1.3 The values stated in inch-pound units are the standard.The SI units in parentheses are provided for information only.1.4 The test methods appear in the following sections:SectionsBond Strength 4-12Burno
5、ut (AC Overload Resistance) 13-21Chemical Resistance 22-28Coefficient of Friction 29-37Continuity, DC High Voltage 38-45Continuity, DC Low Voltage 46-53Completeness of Cure 54-60Cut-Through Temperature (Thermoplastic Flow) 61-68Dielectric Breakdown AC Voltage 69-75Dielectric Breakdown AC Voltage aft
6、er Bending 76-82Dielectric Breakdown AC Voltage at Elevated Temperatures 83-89Dielectric Breakdown AC Voltage after Conditioning in Refriger-ant Atmosphere 90-99Dimensional Measurement 100-106Dissipation Factor Measurement 107-114Electrical Resistance 115-121Elongation 122-129Extractables, Refrigera
7、nt 130-140Film Adherence and Flexibility 141-148Formability:a) Elastic Ratio 152b) Low Stress Elongation 153c) Spring Back 154-155Heat Shock 156-162Oiliness 163-169Scrape Resistance, Unidirectional 170-177Solderability 178-185Resistance to Insulating Liquids and Hydrolytic Stability 186-1951.5 This
8、standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use. Specific hazardstatemen
9、ts are given in 9.5, 19.1, 19.3, 19.8, 52.1, 58, 59.1,74.1, 112.1, 135.4, and 182.3.NOTE 1This test method is related to IEC 60851. Since both methodscontain multiple test procedures, many procedures are technically equiva-lent while others differ significantly.2. Referenced Documents2.1 ASTM Standa
10、rds:2A228/A228M Specification for Steel Wire, Music SpringQuality3B3 Specification for Soft or Annealed Copper Wire4B43 Specification for Seamless Red Brass Pipe, StandardSizes3B193 Test Method for Resistivity of Electrical ConductorMaterials3B279 Test Method for Stiffness of Bare Soft Square andRec
11、tangular Copper and Aluminum Wire for Magnet WireFabrication3B324 Specification for Aluminum Rectangular and SquareWire for Electrical Purposes3B609/B609M Specification for Aluminum 1350 RoundWire, Annealed and Intermediate Tempers, for ElectricalPurposes5D149 Test Method for Dielectric Breakdown Vo
12、ltage andDielectric Strength of Solid Electrical Insulating Materialsat Commercial Power Frequencies5D150 Test Methods for AC Loss Characteristics and Per-mittivity (Dielectric Constant) of Solid Electrical Insula-tion5D374 Test Methods for Thickness of Solid Electrical Insu-lation6D877 Test Method
13、for Dielectric Breakdown Voltage ofInsulating Liquids Using Disk Electrodes6D1533 Test Method for Water in Insulating Liquids byCoulometric Karl Fischer Titration51These test methods are under the jurisdiction of ASTM Committee D09 onElectrical and Electronic Insulating Materials and are the direct
14、responsibility ofSubcommittee D09.10 on Magnet Wire Insulation.Current edition approved Aug. 1, 2011. Published August 2011. Originallyapproved in 1959. Last previous edition approved in 2003 as D1676-03. DOI:10.1520/D1676-03R11.2Annual Book of ASTM Standards, Vol 01.03.3Annual Book of ASTM Standard
15、s, Vol 02.03.4Annual Book of ASTM Standards, Vol 02.01.5Annual Book of ASTM Standards, Vol 10.01.6Annual Book of ASTM Standards, Vol 10.03.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.D1711 Terminology Relating to Electrical Insul
16、ation7D2475 Specification for Felt8D2519 Test Method for Bond Strength of Electrical Insu-lating Varnishes by the Helical Coil Test8D5423 Specification for Forced-Convection LaboratoryOvens for Evaluation of Electrical Insulation9E4 Practices for Force Verification of Testing Machines9E6 Terminology
17、 Relating to Methods of Mechanical Testing9E8 Test Methods for Tension Testing of Metallic Materials10E220 Test Method for Calibration of Thermocouples ByComparison Techniques11E1356 Test Method for Assignment of the Glass TransitionTemperatures by Differential Scanning Calorimetry11E1545 Test Metho
18、d for Assignment of the Glass TransitionTemperature by Thermomechanical Analysis2.2 Other Documents:Federal Specification CCCM-911 for Bleached Muslin12IEC 60851 Methods of Test for Winding Wire123. Terminology3.1 Definitions:3.1.1 conductor, na wire or combination of wires notinsulated from each ot
19、her, suitable for carrying electric current.3.1.2 magnet wire, na metal electrical conductor, coveredwith electrical insulation, for use in the assembly of electricalinductive apparatus such as coils for motors, transformers,generators, relays, magnets, etc.3.1.3 For definition of other terms used i
20、n this test methodrefer to Terminology D1711.3.2 Definitions of Terms Specific to This Standard:3.2.1 film coating, ncured enamel coating.3.2.2 film insulated wire, na conductor insulated with afilm coating.BOND STRENGTH OF ROUND FILM-INSULATEDSELF-BONDING MAGNET WIRE BY THE HELICALCOIL TEST4. Scope
21、4.1 This test method covers the determination of the bondstrength of a self-bonding outer coating on round film-insulatedmagnet wires (AWG 14 through 44). Both thermal and solventbonding methods are defined.5. Terminology5.1 Definitions of Terms Specific to This Standard:5.1.1 bond strength, na meas
22、ure of the force required toseparate surfaces which have been bonded together.5.1.1.1 DiscussionFor magnet wire which has been selfbonded or varnish treated, the bond strength is reported as theforce required to break a test specimen in flexure.6. Summary of Test Method6.1 Flexural strength tests ar
23、e made on bonded helical coilsto determine the force required to break the coil under specifiedconditions.7. Significance and Use7.1 Bond strength values obtained by flexural tests canprovide information with regard to the bond strength of aparticular self-bonding outer coating in combination with a
24、particular round film-insulated magnet wire when measuredunder conditions described in this test method.8. Apparatus8.1 Testing MachineTensile testing machines used forbond strength test shall conform to the requirements ofPractices E4.8.2 Test FixtureThe test fixture shall conform to the testfixtur
25、e for bond strength tests required by Test Method D2519.8.3 Mandrel HolderThe mandrel holder shall be a metalblock of sufficient size and thickness with a hole capable ofsupporting the winding mandrel in a vertical position duringthe bonding cycle of the helical coil.8.4 Winding TensionsThe winding
26、tensions are listed inTable 1.7Annual Book of ASTM Standards, Vol 07.01.8Annual Book of ASTM Standards, Vol 10.02.9Annual Book of ASTM Standards, Vol 03.01.10Annual Book of ASTM Standards, Vol 14.03.11Annual Book of ASTM Standards, Vol 14.02.12Available from Standardization Documents Order Desk, Bld
27、g. 4 Section D,700 Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS.TABLE 1 Helical Coil Bond ParametersWire Size,AWGMandrel DiameterARecommendedWinding TensionBond WeightsAin. mm g N g N44 0.011 0.28 2.5 0.025 0.80 0.00843 0.011 0.28 2.5 0.025 0.80 0.00842 0.016 0.41 5.0 0.50 1.60 0.01641 0.0
28、16 0.41 5.0 0.50 1.60 0.01640 0.022 0.56 10.0 0.098 3.15 0.03139 0.022 0.56 10.0 0.098 3.15 0.03138 0.022 0.56 10.0 0.098 3.15 0.03137 0.032 0.81 20.0 0.196 6.30 0.06236 0.032 0.81 20.0 0.196 6.30 0.06235 0.032 0.81 20.0 0.196 6.30 0.06234 0.044 1.12 40.0 0.392 12.5 0.12333 0.044 1.12 40.0 0.392 12.
29、5 0.12332 0.044 1.12 40.0 0.392 12.5 0.12331 0.063 1.60 80.0 0.785 25.0 0.24530 0.063 1.60 80.0 0.785 25.0 0.24529 0.063 1.60 80.0 0.785 25.0 0.24528 0.088 2.24 160.0 1.569 50.0 0.49027 0.088 2.24 160.0 1.569 50.0 0.49026 0.088 2.24 160.0 1.569 50.0 0.49025 0.124 3.15 315.0 3.089 100.0 0.98124 0.124
30、 3.15 315.0 3.089 100.0 0.98123 0.124 3.15 315.0 3.089 100.0 0.98122 0.177 4.50 630.0 6.178 200.0 1.96121 0.177 4.50 630.0 6.178 200.0 1.96120 0.177 4.50 630.0 6.178 200.0 1.96119 0.248 6.30 1250.0 12.258 400.0 3.92318 0.248 6.30 1250.0 12.258 400.0 3.92317 0.248 6.30 1250.0 12.258 400.0 3.92316 0.3
31、54 8.99 2500.0 24.517 800.0 7.84515 0.354 8.99 2500.0 24.517 800.0 7.84514 0.354 8.99 2500.0 24.517 800.0 7.845A6 2 % on all mandrels and bond weights.D1676 03 (2011)28.5 Bonding WeightsBonding weights (listed in Table 1)should be made with a hole through the center to allow theweight to slip freely
32、 over the winding mandrel and load ahelical coil during bonding of coil.8.6 Forced-Air OvenSee Specification D5423.9. Test Specimen Preparation9.1 Select the appropriate mandrel from Table 1, spray itwith a suitable release agent (fluorocarbon or silicone spray isadequate), and allow it to dry. Care
33、fully wind onto the preparedmandrel a length of wire, long enough to wind a helical coil atleast 3 in. (76 mm) long. The winding tension shall be asprescribed in Table 1. Ensure that the coil is wound withoutspace between turns.9.2 Prepare six or more coils from each wire sample.9.3 Thermal BondingM
34、ount the mandrel supporting thecoil vertically in the mandrel holder and loaded with thebonding weight specified in Table 1. Place the mandrel holderand coil into a forced-air oven at a specified temperature for aspecified time, after which the assembly is removed from theoven and cooled to room tem
35、perature. Remove the coil fromthe mandrel and inspect the coil for breaks or physical damageprior to testing.9.4 Solvent BondingAfter winding, immerse the coil andmandrel into the specified solvent for 5 s. Immediately there-after, secure the mandrel supporting the coil in the mandrelholder and load
36、 the coil with the bonding weight specified inTable 1. Dry the coils for1hatroom temperature. Carefullyremove the coils from the mandrels and further dry in a forcedair oven for 15 6 2 min at 100 6 3C (unless otherwisespecified). Cool the coil to room temperature, inspect forbreaks or physical damag
37、e, and test.9.5 Resistance BondingMount the mandrel supporting thecoil vertically in a mandrel holder and loaded with the bondingweight specified in Table 1. Energize the coil with enoughcurrent and time to allow bonding. Remove the coil from themandrel and inspect for breaks or physical damage, and
38、 test.Specific bonding conditions shall be agreed upon between themanufacturer and the user. (WarningLethal voltages are apotential hazard during the performance of this test. It isessential that the test apparatus, and all associated equipmentelectrically connected to it, be properly designed and i
39、nstalledfor safe operation. Solidly ground all electrically conductiveparts which it is possible for a person to contact during thetest. Provide means for use at the completion of any test toground any parts which were at high voltage during the test orhave the potential for acquiring an induced cha
40、rge during thetest or retaining a charge even after disconnection of thevoltage source. Thoroughly instruct all operators as to thecorrect procedures for performing tests safely. When makinghigh voltage tests, particularly in compressed gas or in oil, itis possible for the energy released at breakdo
41、wn to be suffcientto result in fire, explosion, or rupture of the test chamber.Design test equipment, test chambers, and test specimens so asto minimize the possibility of such occurrences and to eliminatethe possibility of personal injury. If the potential for fire exists,have fire suppression equi
42、pment available.)10. Procedure10.1 Use a rate of loading such that the duration of the testshall be greater than the full-scale response time of the loadrecording instrument.10.2 Prepare sufficient specimens to obtain six data pointsfor each wire sample. One or more of the specimens may bedestroyed
43、in adjusting the rate of loading.10.3 Break specimens according to the test proceduresdescribed in Test Method D2519.10.4 Tests at other than room temperature can be performed,if desired, using an insulated heat-resistant enclosure, designedto fit around the test fixture and in the stress strain ana
44、lyzer.Place the specimens in the fixture in the oven for 15 min butnot more than 30 min after the oven has recovered to the settemperature 6 2C. Break the specimens according to the testprocedures described in Test Method D2519. The specified testtemperature and minimum bond strength shall be agreem
45、entupon between the manufacturer and the user.11. Report11.1 Report the following:11.1.1 Identification of size, build and type of insulationused,11.1.2 Heat or solvent bonding (including temperature ortype of solvent, or both),11.1.3 Test temperature, and11.1.4 Atable listing the individual values
46、in pounds, gramsor newtons of bond strength and their averages.12. Precision and Bias1312.1 In comparing two averages of six observations, thedifferences should not exceed the critical difference in Table 2,in 95 out of 100 cases when all of the observations are taken bythe same well-trained operato
47、r using the same piece of testequipment and specimens randomly drawn from the samesample of material.12.2 PrecisionTwo averages of observed values should beconsidered significantly different at the 95 % probability levelif the difference equals or exceeds the critical differences listedin Table 2.12
48、.3 BiasThis test method has no bias because the valueof bond strength is determined solely in terms of this testmethod.BURNOUT (AC OVERLOAD RESISTANCE)13. Scope13.1 This test method and equipment described herein isused to determine the ac overload resistance of 18AWG heavy13Supporting data are avai
49、lable fromASTM International Headquarters. RequestRR:D09-1007.TABLE 2 Critical Differences, Percent of Average Pounds toBreakANumber ofObservations ineach AverageSingle-OperatorPrecisionWithin-LaboratoryPrecisionBetween-LaboratoryPrecision610 1 12AThe critical differences were calculated using t = 1.960, which is based oninfinite degrees of freedomD1676 03 (2011)3build film-insulated round copper magnet wire by measuringthe time to obtain a dielectric failure when subjected to astep-wise increase in AC overload current.14. Terminology14.1 Definitions of Terms Spe
