electrical insulation material News
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Withdrawn Standard: ASTM D1825-03 Standard Practice for Etching and Cleaning Copper-Clad Electrical Insulating Materials and Thermosetting Laminates for Electrical Testing (Withdrawn 2012)
This practice describes a procedure for etching and cleaning copper-clad electrical insulating materials and thermosetting laminates for electrical testing. Formerly under the jurisdiction of Committee D09 on Electrical Insulation, this standard was withdrawn in ...
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ASTM D4882 - 05(2012) Standard Test Method for Bond Strength of Electrical Insulating Varnishes by the Twisted-Coil Test
Values obtained by flexural test can provide information with regard to the bond strength of the particular varnish in combination with a particular type of magnet wire, when measured under conditions described in this test method. 1. Scope 1.1 This test method covers the determination of the bond strength of an electrical insulating varnish when applied to ...
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ASTM D5637 - 05(2012) Standard Test Method for Moisture Resistance of Electrical Insulating Varnishes
This test method is useful for the evaluation of insulating varnish performance in high humidity exposure. 1. Scope 1.1 This test method covers the mechanical performance of electrical insulating varnishes subjected to high humidity conditions. 1.2 The values stated in SI units are to be regarded as standard. 1.3 This standard does not purport to address all of the safety ...
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ASTM D3638 - 12 Standard Test Method for Comparative Tracking Index of Electrical Insulating Materials
Electrical equipment can fail as a result of electrical tracking of insulating material that is exposed to various contaminating environments and surface conditions. There are a number of ASTM and other tests designed to quantify behavior of materials, especially at relatively high voltages. This method is an accelerated test which at relatively low test voltages, provides a ...
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ASTM D1830 - 99(2012) Standard Test Method for Thermal Endurance of Flexible Sheet Materials Used for Electrical Insulation by the Curved Electrode Method
A major factor affecting the life of insulating materials is thermal degradation. Other factors, such as moisture and vibration, may cause failures after the material has been weakened by thermal degradation. Electrical insulation is effective in electrical equipment only as long as it retains its physical and electrical integrity. Thermal ...
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ASTM D4881 - 05(2012) Standard Test Method for Thermal Endurance of Varnished Fibrous- or Film-Wrapped Magnet Wire
Individual varnishes behave differently when applied to the same fibrous- or film-wrapped magnet wire when exposed to elevated temperatures. Likewise, a varnish does not always behave the same when applied to different types of fibrous or film-wrapped magnet wires and when exposed to elevated temperatures. 1. Scope 1.1 This test method covers the determination ...
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ASTM D2132 - 12 Standard Test Method for Dust-and-Fog Tracking and Erosion Resistance of Electrical Insulating Materials
Method—It is possible that electrical insulation in service will fail as a result of tracking, erosion, or a combination of both, if exposed to high relative humidity and contamination environments. This is particularly true of organic insulations in outdoor applications where the surface of the insulation becomes contaminated by deposits of moisture and dirt, for example, ...
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ASTM A664 - 11 standard practice for identification of standard electrical steel grades in astm specifications
This practice explains the procedure for identifying standard grades and types of flat-rolled electrical steels in ASTM electrical steel specifications. This practice applies to flat-rolled magnetically soft irons and steel such as low-carbon steels and alloys of iron with silicon, aluminum, and so forth produced to a specified thickness and maximum value of core loss. These designations are ...
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ASTM D2864 - 10e1 Standard Terminology Relating to Electrical Insulating Liquids and Gases
1. Scope 0 2. Referenced Documents (purchase separately) ASTM Standards D611 Test Methods for Aniline Point and Mixed Aniline Point of Petroleum Products and Hydrocarbon Solvents D2007 Test Method for Characteristic Groups in Rubber Extender and Processing Oils and Other Petroleum-Derived Oils by the Clay-Gel Absorption Chromatographic Method D2140 Practice for Calculating Carbon-Type ...
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