1、Designation: D1676 03 (Reapproved 2011)D1676 17Standard 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 year of last revision
2、. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope Scope*1.1 These test methods cover procedures for testing film-insulated magnet wire that is used in electrical apparatus. These testm
3、ethods are intended primarily for the evaluation of the electrical insulating materials used. The intent is that these test methodsbe used, except where modified, by individual specifications for particular applications.1.2 These test methods present different procedures for evaluating given propert
4、ies of round, rectangular or square, copper oraluminum 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 12Burnout (AC Over
5、load 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 after Bending
6、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, Refrigerant 130 140F
7、ilm 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 standard do
8、es not purport to address all of the safety concerns, if any, associated with its use. It is the responsibilityof the user of this standard to establish appropriate safety safety, health, and healthenvironmental practices and determine theapplicability of regulatory limitations prior to use. Specifi
9、c hazard statements 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 methods contain multiple test procedures, many procedures are technically equivalentwhile others differ significantly.NOTE 1This test method
10、 is related to IEC 60851. Since both methods contain multiple test procedures, many procedures are technically equivalentwhile others differ significantly.1 These test methods are under the jurisdiction ofASTM Committee D09 on Electrical and Electronic Insulating Materials and are the direct respons
11、ibility of SubcommitteeD09.12 on Electrical Tests.Current edition approved Aug. 1, 2011Nov. 1, 2017. Published August 2011December 2017. Originally approved in 1959. Last previous edition approved in 20032011as D1676D1676 03 (2011).-03. DOI: 10.1520/D1676-03R11.10.1520/D1676-17.This document is not
12、an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate.
13、 In all cases only the current versionof the standard as published by ASTM is to be considered the official document.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States11.6
14、This international standard was developed in accordance with internationally recognized principles on standardizationestablished in the Decision on Principles for the Development of International Standards, Guides and Recommendations issuedby the World Trade Organization Technical Barriers to Trade
15、(TBT) Committee.2. Referenced Documents2.1 ASTM Standards:A228/A228M Specification for Steel Wire, Music Spring QualityB3 Specification for Soft or Annealed Copper WireB43 Specification for Seamless Red Brass Pipe, Standard SizesB193 Test Method for Resistivity of Electrical Conductor MaterialsB279
16、Test Method for Stiffness of Bare Soft Square and Rectangular Copper and Aluminum Wire for Magnet Wire FabricationB324 Specification for Aluminum Rectangular and Square Wire for Electrical PurposesB609/B609M Specification for Aluminum 1350 Round Wire, Annealed and Intermediate Tempers, for Electrica
17、l PurposesD149 Test Method for Dielectric Breakdown Voltage and Dielectric Strength of Solid Electrical Insulating Materials atCommercial Power FrequenciesD150 Test Methods for AC Loss Characteristics and Permittivity (Dielectric Constant) of Solid Electrical InsulationD374D374/D374M Test Methods fo
18、r Thickness of Solid Electrical Insulation (Metric) D0374_D0374MD877 Test Method for Dielectric Breakdown Voltage of Insulating Liquids Using Disk ElectrodesD1533 Test Method for Water in Insulating Liquids by Coulometric Karl Fischer TitrationD1711 Terminology Relating to Electrical InsulationD2475
19、 Specification for FeltD2519 Test Method for Bond Strength of Electrical Insulating Varnishes by the Helical Coil TestD5423 Specification for Forced-Convection Laboratory Ovens for Evaluation of Electrical InsulationE4 Practices for Force Verification of Testing MachinesE6 Terminology Relating to Me
20、thods of Mechanical TestingE8 Test Methods for Tension Testing of Metallic MaterialsE220 Test Method for Calibration of Thermocouples By Comparison TechniquesE1356 Test Method for Assignment of the Glass Transition Temperatures by Differential Scanning CalorimetryE1545 Test Method for Assignment of
21、the Glass Transition Temperature by Thermomechanical Analysis2.2 Other Documents:2Federal Specification CCCM-911 Federal Specification for Bleached MuslinIEC 60851 Methods of Test for Winding Wire3. Terminology3.1 Definitions:3.1.1 conductor, na wire or combination of wires not insulated from each o
22、ther, suitable for carrying electric current.3.1.2 magnet wire, na metal electrical conductor, covered with electrical insulation, for use in the assembly of electricalinductive apparatus such as coils for motors, transformers, generators, relays, magnets, etc.and so forth.3.1.3 For definition of ot
23、her terms used in this test method refer 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 a film coating.BOND STRENGTH OF ROUND FILM-INSULATED SELF-BONDING MAGNET WIRE BY THE HELIC
24、AL COILTEST4. Scope4.1 This test method covers the determination of the bond strength of a self-bonding outer coating on round film-insulatedmagnet wires (AWG 14 through 44). Both thermal and solvent bonding methods are defined.4.2 This international standard was developed in accordance with interna
25、tionally recognized principles on standardizationestablished in the Decision on Principles for the Development of International Standards, Guides and Recommendations issuedby the World Trade Organization Technical Barriers to Trade (TBT) Committee.5. Terminology5.1 Definitions of Terms Specific to T
26、his Standard:5.1.1 bond strength, na measure of the force required to separate surfaces which have been bonded together.2 Available from Standardization Documents Order Desk, Bldg. 4 Section D, 700 Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS.D1676 1725.1.1.1 DiscussionFor magnet wire whic
27、h has been self bonded or varnish treated, the bond strength is reported as the force required to break a testspecimen in flexure.6. Summary of Test Method6.1 Flexural strength tests are made on bonded helical coils to determine the force required to break the coil under specifiedconditions.7. Signi
28、ficance and Use7.1 Bond strength values obtained by flexural tests can provide information with regard to the bond strength of a particularself-bonding outer coating in combination with a particular round film-insulated magnet wire when measured under conditionsdescribed in this test method.8. Appar
29、atus8.1 Testing MachineTensile testing machines used for bond strength test shall conform to the requirements of Practices E4.8.2 Test FixtureThe test fixture shall conform to the test fixture for bond strength tests required by Test Method D2519.8.3 Mandrel HolderThe mandrel holder shall be a metal
30、 block of sufficient size and thickness with a hole capable ofsupporting the winding mandrel in a vertical position during the bonding cycle of the helical coil.8.4 Winding TensionsThe winding tensions are listed in Table 1.8.5 Bonding WeightsBonding weights (listed in Table 1) should be are made wi
31、th a hole through the center to allow the weightto slip freely over the winding mandrel and load a helical coil during bonding of coil.8.6 Forced-Air OvenSee Specification D5423.TABLE 1 Helical Coil Bond ParametersWire Size,AWGMandrel DiameterA RecommendedWinding Tension Bond WeightsAin. mm g N g N4
32、4 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 0.016 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.
33、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 12.5 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.
34、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 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 6.30 125
35、0.0 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 0.354 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 7.845A 2 % 2 % on all mandrels and bond weights.D1676 1739. Test Specimen Preparation9.1
36、 Select the appropriate mandrel from Table 1, spray it with a suitable release agent (fluorocarbon or silicone spray isadequate), and allow it to dry. Carefully wind onto the prepared mandrel a length of wire, long enough to wind a helical coil atleast 3 in. (76 mm) long.The winding tension shall be
37、 as prescribed in Table 1. Ensure that the coil is wound without space betweenturns.9.2 Prepare six or more coils from each wire sample.9.3 Thermal BondingMount the mandrel supporting the coil vertically in the mandrel holder and loaded with the bondingweight specified in Table 1. Place the mandrel
38、holder and coil into a forced-air oven at a specified temperature for a specified time,after which the assembly is removed from the oven and cooled to room temperature. Remove the coil from the mandrel and inspectthe coil for breaks or physical damage prior to testing.9.4 Solvent BondingAfter windin
39、g, immerse the coil and mandrel into the specified solvent for 5 s. Immediately thereafter,secure the mandrel supporting the coil in the mandrel holder and load the coil with the bonding weight specified in Table 1. Drythe coils for 1 h at room temperature. Carefully remove the coils from the mandre
40、ls and further dry in a forced air oven for 156 2 min at 100 6 3C (unless otherwise specified). Cool the coil to room temperature, inspect for breaks or physical damage, andtest.9.5 Resistance BondingMount the mandrel supporting the coil vertically in a mandrel holder and loaded with the bondingweig
41、ht specified in Table 1. Energize the coil with enough current and time to allow bonding. Remove the coil from the mandreland inspect for breaks or physical damage, and test. Specific bonding conditions shall be agreed upon between the manufacturerand the user. (WarningLethal voltages are a potentia
42、l hazard during the performance of this test. It is essential that the testapparatus, and all associated equipment electrically connected to it, be properly designed and installed for safe operation. Solidlyground all electrically conductive parts which it is possible for a person to contact during
43、the test. Provide means for use at thecompletion of any test to ground any parts which were at high voltage during the test or have the potential for acquiring an inducedcharge during the test or retaining a charge even after disconnection of the voltage source. Thoroughly instruct all operators ast
44、o the correct procedures for performing tests safely. When making high voltage tests, particularly in compressed gas or in oil, itis possible for the energy released at breakdown to be suffcient to result in fire, explosion, or rupture of the test chamber. Designtest equipment, test chambers, and te
45、st specimens so as to minimize the possibility of such occurrences and to eliminate thepossibility of personal injury. If the potential for fire exists, have fire suppression equipment available.)10. Procedure10.1 Use a rate of loading such that the duration of the test shall be greater than the ful
46、l-scale response time of the load recordinginstrument.10.2 Prepare sufficient specimens to obtain six data points for each wire sample. One or more of the specimens may arepotentially going to be destroyed in adjusting the rate of loading.10.3 Break specimens according to the test procedures describ
47、ed in Test Method D2519.10.4 Tests at other than room temperature can are able to be performed, if desired, using an insulated heat-resistant enclosure,designed to fit around the test fixture and in the stress strain analyzer. Place the specimens in the fixture in the oven for 15 minbut not more tha
48、n 30 min after the oven has recovered to the set temperature 6 2C. 62C. Break the specimens according to thetest procedures described in Test Method D2519. The specified test temperature and minimum bond strength shall be agreementupon between the manufacturer and the user.11. Report11.1 Report the
49、following:11.1.1 Identification of size, build and type of insulation used,11.1.2 Heat or solvent bonding (including temperature or type of solvent, or both),11.1.3 Test temperature, and11.1.4 A table listing the individual values in pounds, grams or newtons of bond strength and their averages.TABLE 2 Critical Differences, Percent of Average Pounds toBreakANumber ofObservations ineach AverageSingle-OperatorPrecisionWithin-LaboratoryPrecisionBetween-LaboratoryPrecision6 10 11 12A The critical differences were cal
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