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Significance and Use
Bond strength values obtained by flexural tests can provide information with regard to the bond strength of a particular self-bonding outer coating in combination with a particular round film-insulated magnet wire when measured under conditions described in this test method.
1.1 These test methods cover procedures for testing film-insulated magnet wire that is used in electrical apparatus. These test methods are intended primarily for the evaluation of the electrical insulating materials used. The intent is that these test methods be used, except where modified, by individual specifications for particular applications.
1.2 These test methods present different procedures for evaluating given 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:
|Burnout (AC Overload Resistance)||13-21|
|Coefficient of Friction||29-37|
|Continuity, DC High Voltage||38-45|
|Continuity, DC Low Voltage||46-53|
|Completeness of Cure||54-60|
|Cut-Through Temperature (Thermoplastic Flow)||61-68|
|Dielectric Breakdown AC Voltage||69-75|
|Dielectric Breakdown AC Voltage after Bending||76-82|
|Dielectric Breakdown AC Voltage at Elevated Temperatures||83-89|
|Dielectric Breakdown AC Voltage after Conditioning in Refrigerant Atmosphere||90-99|
|Dissipation Factor Measurement||107-114|
|Film Adherence and Flexibility||141-148|
|a) Elastic Ratio||152|
|b) Low Stress Elongation||153|
|c) Spring Back||154-155|
|Scrape Resistance, Unidirectional||170-177|
|Resistance to Insulating Liquids and Hydrolytic Stability||186-195|
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Specific 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 1—This test method is related to IEC 60851. Since both methods contain multiple test procedures, many procedures are technically equivalent while others differ significantly.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
A228/A228M Specification for Steel Wire, Music Spring Quality
B3 Specification for Soft or Annealed Copper Wire
B43 Specification for Seamless Red Brass Pipe, Standard Sizes
B193 Test Method for Resistivity of Electrical Conductor Materials
B279 Test Method for Stiffness of Bare Soft Square and Rectangular Copper and Aluminum Wire for Magnet Wire Fabrication
B324 Specification for Aluminum Rectangular and Square Wire for Electrical Purposes
B609/B609M Specification for Aluminum 1350 Round Wire, Annealed and Intermediate Tempers, for Electrical Purposes
D149 Test Method for Dielectric Breakdown Voltage and Dielectric Strength of Solid Electrical Insulating Materials at Commercial Power Frequencies
D150 Test Methods for AC Loss Characteristics and Permittivity (Dielectric Constant) of Solid Electrical Insulation
D374 Test Methods for Thickness of Solid Electrical Insulation
D877 Test Method for Dielectric Breakdown Voltage of Insulating Liquids Using Disk Electrodes
D1533 Test Method for Water in Insulating Liquids by Coulometric Karl Fischer Titration
D1711 Terminology Relating to Electrical Insulation
D2475 Specification for Felt
D2519 Test Method for Bond Strength of Electrical Insulating Varnishes by the Helical Coil Test
D5423 Specification for Forced-Convection Laboratory Ovens for Evaluation of Electrical Insulation
E4 Practices for Force Verification of Testing Machines
E6 Terminology Relating to Methods of Mechanical Testing
E8 Test Methods for Tension Testing of Metallic Materials
E220 Test Method for Calibration of Thermocouples By Comparison Techniques
E1356 Test Method for Assignment of the Glass Transition Temperatures by Differential Scanning Calorimetry
E1545 Test Method for Assignment of the Glass Transition Temperature by Thermomechanical Analysis
Other DocumentsIEC60851 Methods of Test for Winding Wire
ICS Number Code 29.060.10 (Wires)
UNSPSC Code 26121509(Magnet wire)