ASTM D5470-06
Historical Standard: ASTM D5470-06 Standard Test Method for Thermal Transmission Properties of Thermally Conductive Electrical Insulation Materials
SUPERSEDED (see Active link, below)
ASTM D5470
1. Scope
1.1 This standard covers a test method for measurement of thermal impedance and calculation of an apparent thermal conductivity for thermally conductive electrical insulation materials ranging from liquid compounds to hard solid materials.
1.2 The term 'thermal conductivity' applies only to homogeneous materials. Thermally conductive electrical insulating materials are usually heterogeneous and to avoid confusion this test method uses 'apparent thermal conductivity' for determining thermal transmission properties of both homogeneous and heterogeneous materials.
1.3 The values stated in SI units are to be regarded as standard.
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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
ASTM Standards
D374 Test Methods for Thickness of Solid Electrical Insulation
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
E1225 Test Method for Thermal Conductivity of Solids by Means of the Guarded-Comparative-Longitudinal Heat Flow Technique
Keywords
apparent thermal conductivity; guarded heater method; thermal conductivity; thermal impedance; thermally conductive electrical insulation; Guarded heater method; Roiseland method; Apparent thermal conductivity; Electrical insulating solids; Thermal conductance/conductivity; Thermal impedance; Thermal insulating materials (electrical)
ICS Code
ICS Number Code 29.035.01 (Insulating materials in general)
DOI: 10.1520/D5470-06
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