EN 60641-2:2004

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 General notes on tests
   4.1 Conditioning
   4.2 Drying
   4.3 Tolerances
   4.4 Results
5 Thickness
   5.1 Test apparatus
   5.2 Setting gauge
   5.3 Procedure
   5.4 Results
6 Apparent density
7 Tensile strength and elongation
   7.1 Principle
   7.2 Determination with non-folded test pieces
   7.3 Determination with folded test pieces
8 Internal tearing resistance
9 Edge tearing resistance
   9.1 Procedure
   9.2 Results
10 Compressibility
   10.1 Principle
   10.2 Test apparatus
   10.3 Test pieces
   10.4 Procedure
   10.5 Results
11 Shrinkage
   11.1 Test apparatus
   11.2 Test pieces
   11.3 Procedure
   11.4 Results
12 Plybond resistance
   12.1 Principle
   12.2 Test pieces
   12.3 Test apparatus
   12.4 Test method
   12.5 Results
13 Moisture content
14 Ash content
   15.1 Test apparatus
   15.2 Procedure
   15.3 Results
16 pH of aqueous extract
   16.1 Test apparatus
   16.2 Procedure
   16.3 Results
17 Oil absorption
   17.1 Test pieces
   17.2 Procedure
   17.3 Results
18 Conducting paths
19 Presence of metallic particles
   19.1 Chemical methods
   19.2 X-ray method
20 Electric strength
   20.1 Test apparatus
   20.2 Test pieces for test in air
   20.3 Test pieces for test in oil
   20.4 Test pieces for testing after folding
   20.5 Number of tests
   20.6 Procedure
   20.7 Results
Annex ZA (normative) Normative references to international
         publications with their corresponding European
         publications
Bibliography

Applies to pressboard and presspaper for electrical purposes. The series does not apply to laminated material. This part specifies the test methods to be used in testing pressboard and presspaper for electrical purposes to meet the requirements prescribed in the specification sheets of Part 3. NOTE In this standard, reference is made in several places to ISO standards accompanied by a short description of the method used. It is to be understood that this short description is meant for identification purposes only and that all details should be taken from the ISO standard itself. The main changes with respect to the previous edition are listed below: The following test methods have been cancelled: - Flexibility - Conductivity of the organic extract - Contamination of liquid dielectrics The following test methods have been rewritten: - Compressibility - Conductivity of the aqueous extract - Cohesion between plies The following test method has introduced: - Determination of metallic particles with X-ray.