1.1 These test methods cover the sampling and testing of electrical insulating boards. These boards are porous, usually fibrous sheets used for dielectric and structural purposes in electrical apparatus.
1.2 These test methods are not intended for testing vulcanized fibre or molded laminated sheets.
1.3 These test methods are applicable to board materials having a nominal thickness of at least
0.030 in. (0.76 mm). NOTE 1—For materials thinner than
0.030 in. (0.76 mm) see Test Methods D202.
1.4 The test methods appear in the following sections: Sections ASTM Method Reference Apparent Density 18 – 23 Aqueous Extract Characteristics 36 – 42 D202 Ash Content 43 – 46 T 413 Compatibility with Dielectric Liquids 47 – 52 D664, D877, D924, D971, D974, D1169, D1500, D1816, D3455, D3487 Compressibility 79 – 85 Conditioning 11 D685 Degree of Polymerization 86 – 89 D4243 Dielectric Strength in Air 53 – 59 D149 Dielectric Strength in Oil 60 – 65 D149, D2413, D3426 Dimensions of Sheets 12 – 17 Moisture Content 31 – 35 D644 Oil Absorption 72 – 78 Reports 10 Sampling 6 – 9 D3636 Shrinkage 24 – 30 D644 Tensile Properties 66 – 71 D202
1.5 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.
1.6 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 consult and establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
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.
ASTM D3394-16(2022) Referenced Document
ASTM D1169 Standard Test Method for Specific Resistance (Resistivity) of Electrical Insulating Liquids
ASTM D149 Standard Test Method for Dielectric Breakdown Voltage and Dielectric Strength of Solid Electrical Insulating Materials at Commercial Power Frequencies
ASTM D1500 Standard Test Method for ASTM Color of Petroleum Products (ASTM Color Scale)
ASTM D1816 Standard Test Method for Dielectric Breakdown Voltage of Insulating Oils of Petroleum Origin Using VDE Electrodes
ASTM D202 Standard Test Methods for Sampling and Testing Untreated Paper Used for Electrical Insulation
ASTM D2413 Standard Practice for Preparation of Insulating Paper and Board Impregnated with a Liquid Dielectric
ASTM D2865 Standard Practice for Calibration of Standards and Equipment for Electrical Insulating Materials Testing
ASTM D3426 Standard Test Method for Dielectric Breakdown Voltage and Dielectric Strength of Solid Electrical Insulating Materials Using Impulse Waves
ASTM D3455 Standard Test Methods for Compatibility of Construction Material with Electrical Insulating Oil of Petroleum Origin
ASTM D3487 Standard Specification for Mineral Insulating Oil Used in Electrical Apparatus
ASTM D3636 Standard Practice for Sampling and Judging Quality of Solid Electrical Insulating Materials
ASTM D374 Standard Test Methods for Thickness of Solid Electrical Insulation
ASTM D4243 Standard Test Method for Measurement of Average Viscometric Degree of Polymerization of New and Aged Electrical Papers and Boards
ASTM D586 Standard Test Method for Ash in Pulp, Paper, and Paper Products
ASTM D644 Standard Test Method for Moisture Content of Paper and Paperboard by Oven Drying
ASTM D664 Standard Test Method for Acid Number of Petroleum Products by Potentiometric Titration
ASTM D685 Standard Practice for Conditioning Paper and Paper Products for Testing
ASTM D877 Standard Test Method for Dielectric Breakdown Voltage of Insulating Liquids Using Disk Electrodes
ASTM D924 Standard Test Method for Dissipation Factor (or Power Factor) and Relative Permittivity (Dielectric Constant) of Electrical Insulating Liquids
ASTM D971 Standard Test Method for Interfacial Tension of Oil Against Water by the Ring Method
ASTM D974 Standard Test Method for Acid and Base Number by Color-Indicator Titration
ASTM E29 Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
ASTM D3394-16(2022) history
2022ASTM D3394-16(2022) Standard Test Methods for Sampling and Testing Electrical Insulating Board
2016ASTM D3394-16 Standard Test Methods for Sampling and Testing Electrical Insulating Board
1994ASTM D3394-94(2009) Standard Test Methods for Sampling and Testing Electrical Insulating Board
1994ASTM D3394-94(2005) Standard Test Methods for Sampling and Testing Electrical Insulating Board
1994ASTM D3394-94(2000) Standard Test Methods for Sampling and Testing Electrical Insulating Board