We need your consent to use the individual data so that you can see information about your interests, among other things. Click "OK" to give your consent.
Standard Test Method for Thermal Endurance of Coating Powders Used for Powder Coating Insulation Systems
Translate name
STANDARD published on 1.11.2019
Designation standards: ASTM D7895/D7895M-19
Publication date standards: 1.11.2019
SKU: NS-975417
The number of pages: 6
Approximate weight : 18 g (0.04 lbs)
Country: American technical standard
Category: Technical standards ASTM
Keywords:
dielectric breakdown voltage, integral bus bar, powder coating, temperature index, thermal endurance, thermal endurance graph, thermal life, thermal life curve,, ICS Number Code 29.060.10 (Wires), 29.080.01 (Insulation in general), 87.040 (Paints and varnishes)
Significance and Use | ||||||||
5.1 A major factor affecting the life of insulating materials is thermal degradation. It is possible that other factors, such as moisture and vibration, will cause failures after the material has been weakened by thermal degradation. 5.2 Electrical insulation is effective in electrical equipment only as long as it retains its physical and electrical integrity. The following are potential indicators of thermal degradation: weight change, porosity, crazing, and generally a reduction in flexibility. Thermal degradation is usually accompanied by an ultimate reduction in dielectric breakdown. 5.3 This test method is useful in determining the thermal endurance of coating powders applied over a steel substrate material. |
||||||||
1. Scope | ||||||||
1.1 This test method provides a procedure for evaluating thermal endurance of coating powders by determining the length of aging time at selected elevated temperatures required to achieve dielectric breakdown at room temperature at a pre-determined proof voltage. Thermal endurance is expressed in terms of a temperature index. 1.2 This test method is applicable to insulating powders used over a substrate material of steel. 1.3 Units—The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems is likely to result in non-conformance with the standard. 1.4 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. |
||||||||
2. Referenced Documents | ||||||||
|
Do you want to make sure you use only the valid technical standards?
We can offer you a solution which will provide you a monthly overview concerning the updating of standards which you use.
Would you like to know more? Look at this page.
Latest update: 2025-02-16 (Number of items: 2 225 586)
© Copyright 2025 NORMSERVIS s.r.o.