ASTM D2304 - 18 - Standard Test Method for Thermal Endurance of Rigid Electrical Insulating Materials

ASTM D2304 - 18

Standard Test Method for Thermal Endurance of Rigid Electrical Insulating Materials

Status : Current   Published : May 2018

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PDF

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HARDCOPY



1.1 This test method 2 provides procedures for evaluating the thermal endurance of rigid electrical insulating materials. Dielectric strength, flexural strength, or water absorption are determined at room temperature after aging for increasing periods of time in air at selected-elevated temperatures. A thermal-endurance graph is plotted using a selected end point at each aging temperature. A means is described for determining a temperature index by extrapolation of the thermal endurance graph to a selected time.

1.2 This test method is most applicable to rigid electrical insulation such as supports, spacers, voltage barriers, coil forms, terminal boards, circuit boards and enclosures for many types of application where retention of the selected property after heat aging is important.

1.3 When dielectric strength is used as the aging criterion, it is also acceptable to use this test method for some thin sheet (flexible) materials, which become rigid with thermal aging, but is not intended to replace Test Method D1830 for those materials which must retain a degree of flexibility in use.

1.4 This test method is not applicable to ceramics, glass, or similar inorganic materials.

1.5 The values stated in metric units are to be regarded as standard. Other units (in parentheses) are provided for information.

1.6  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. A specific warning statement is given in 11.3.4.

1.7  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.




Standard NumberASTM D2304 - 18
TitleStandard Test Method for Thermal Endurance of Rigid Electrical Insulating Materials
StatusCurrent
Publication Date01 May 2018
Normative References(Required to achieve compliance to this standard)No other standards are normatively referenced
Informative References(Provided for Information)No other standards are informatively referenced
Descriptors a-c breakdown voltage, flexural strength, heat aging, rigid plates, rigid sheets, thermal endurance, thermosetting laminates, water absorption
ICS29.035.01
PublisherASTM
FormatA4
DeliveryYes
Pages7
File Size166 KB
Price£40.00


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