ASTM D2-08 PDF
Name in English:
St ASTM D2-08
Name in Russian:
Ст ASTM D2-08
Original standard ASTM D2-08 in PDF full version. Additional info + preview on request
Full title and description
Standard Test Methods for Sampling and Testing Untreated Paper Used for Electrical Insulation — this 2008 edition (D202-08) is a compilation of sampling procedures and a broad set of laboratory test methods used to evaluate physical, chemical and electrical properties of untreated papers and thin fibrous mats intended for use as electrical insulation or as constituents of electrical insulating composites.
Abstract
This document (D202-08) compiles accepted ASTM procedures for sampling and for determining key properties of untreated electrical insulating papers (thicknesses up to about 0.75 mm, with many methods applicable to similar fibrous mats). Included tests cover moisture, dimensions, tensile and tear properties, dielectric strength and dissipation factor, chemical extractables, ash and chloride content, air resistance, and other characteristics important for dielectric performance and material specification.
General information
- Status: Historical edition (D202-08); later editions exist (the ASTM record shows a current/active D202-23 edition).
- Publication date: 2008 (designation shown as D202-08; published 01/05/2008 in vendor records for this edition).
- Publisher: ASTM International.
- ICS / categories: 29.035.10 (Electrical insulating materials).
- Edition / version: D202-08 (this product page focuses on the 2008 edition; the ASTM listing also shows later versions such as D202-17 and D202-23).
- Number of pages: 35 pages (for the D202-08 compilation).
Scope
The test methods cover procedures for sampling and testing untreated paper intended as electrical insulators or as constituents of insulating composites. Typical scope limits are papers up to about 0.75 mm thickness (many methods apply to related pulps or boards and to flexible fibrous-mat materials formed from suspensions of fiber in fluids other than water). The compilation lists specific procedures for moisture content, tensile properties, dielectric strength, dissipation factor/permits, air resistance, ash and chloride determinations, and other tests referenced to ASTM or TAPPI methods.
Key topics and requirements
- Procedures for representative sampling of lots of insulating paper.
- Moisture conditioning and moisture-content measurement.
- Dimensional measurements (thickness, sheet and roll dimensions).
- Mechanical properties: tensile, tearing and bursting strength, folding endurance.
- Chemical testing: ash, chloride (water-extractable), solvent-soluble matter, aqueous extract conductivity and pH.
- Electrical properties: dielectric strength, dissipation factor, permittivity.
- Physical tests: air resistance, surface friction, density (apparent), particulate contamination.
- Reporting requirements and references to specific ASTM/TAPPI test methods for each procedure.
These topic groupings are drawn from the compilation table of procedures in the D202-08 edition.
Typical use and users
Used by quality and laboratory personnel in paper manufacturing, electrical insulation product manufacturers (including capacitor and transformer component makers), procurement and QA teams in buyer-seller relationships, and test laboratories that certify or evaluate paper for dielectric and insulating applications. The methods provide a common basis for specification, acceptance testing and comparative assessment of insulating papers.
Related standards
The compilation references many specific ASTM and TAPPI test methods (for example D374 for dimensions, D150 for dissipation factor/permits, D149 for dielectric strength, D76/E4 for tensile properties, D6054 for conditioning, etc.). The D202 compilation is noted as closely related to IEC Publication 60554-2 for similar insulating-paper test methods; users are advised to compare procedures if cross-recognition is required.
Keywords
electrical insulation, insulating paper, dielectric strength, dissipation factor, permittivity, moisture content, tensile properties, sampling, ASTM D202-08, paper testing.
FAQ
Q: What is this standard?
A: It is a compilation of ASTM test methods (designation D202-08 for the 2008 edition) for sampling and laboratory testing of untreated papers intended for electrical insulating use.
Q: What does it cover?
A: Sampling procedures and a broad range of laboratory test methods covering physical, chemical and electrical properties (dimensions, moisture, tensile/tear/burst, dielectric strength, dissipation factor, ash/chlorides, air resistance, etc.) for untreated insulating papers and similar fibrous mats.
Q: Who typically uses it?
A: Paper manufacturers, electrical component makers (capacitors, transformers), independent test laboratories, quality assurance and procurement teams that require standardized methods to specify and verify insulating-paper performance.
Q: Is it current or superseded?
A: The D202-08 edition is a historical 2008 edition of the D202 compilation. ASTM’s listings show later revisions (for example D202-17 and an active D202-23 edition), so users wanting the current technical requirements should consult the latest active edition. For archival or comparison work the D202-08 text remains a valid historical reference.
Q: Is it part of a series?
A: Yes — D202 is a compilation within ASTM’s Book of Standards (volume noted for electrical insulating materials) and it cross-references many individual ASTM and TAPPI test methods; successive revisions carry the same base designation with year suffixes (for example D202-08, D202-17, D202-23).
Q: What are the key keywords?
A: insulating paper, dielectric, permittivity, dissipation factor, dielectric strength, moisture conditioning, tensile, sampling, ASTM D202.