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1.1 These test methods cover procedures for testing rigid electrical insulation normally manufactured in flat sheet or plate form. They are generally used as terminal boards, spacers, voltage barriers, and circuit boards.

Note 1 – For tests applying to vulcanized fibre reference should be made to Test Methods D 619.

Note 2 – This standard resembles IEC 60893-2, Specification for Rigid Industrial Laminated Sheets Based On Thermosetting Resins for Electrical Purpose, Methods of Tests.

1.2 The test methods appear in the following sections:

Test Sections ASTM
Test
Method
Acetone extractable matter 83 to 84 D 494
Arc resistance 47 D 495
Ash 56 to 60
Bonding strength 49 to 54
Burning rate and flame resistance 61 to 75
Compressive strength 25 D 695
Conditioning 4 D 6054
Dissipation factor 34 to 40 D 669
Dielectric strength 28 to 33 D 149
Expansion (linear thermal) 76 D 696
Flexural properties 12 to 24 D 790
Hardness (Rockwell) 55 D 785
Insulation resistance and resistivity 41 to 46 D 257
Permittivity 34 to 40 D 150
Resistance to impact 26 D 256
Tensile properties 7 to 11 D 638
Thickness 5 to 6 D 374
Tracking resistance 48 D 2132
Warp or twist 77 to 82
Water absorption 27 D 570

1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

1.4 This is a fire-test-response standard. See Sections 61 through 75, which are the procedures for burning rate and flame resistance.

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 precautionary statements are given in 31.1 and 1.6.

1.6 This standard measures and describes the response of materials, products, or assemblies to heat and flame under controlled conditions, but does not by itself incorporate all factors required for fire hazard or fire risk assessment of the materials, products, or assemblies under actual fire conditions.

17.1 This test method covers the determination of flexural properties at elevated temperature, and as a function of time of exposure to elevated temperature.

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Published:
01/15/2009
Number of Pages:
17
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