IEC 60371-2:2004

FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Preparation methods of test specimens for curable materials
    3.1 General
    3.2 Method 1
    3.3 Method 2
4 Thickness
    4.1 Test apparatus
    4.2 Test specimen
    4.3 Procedure
    4.4 Statement of results
5 Density
6 Calculated density
7 Composition
    7.1 Test specimen
    7.2 Mass per unit area in the 'as received' condition
    7.3 Content of volatiles and mass per unit area of dried
         material
    7.4 Binder content
    7.5 Mass per unit area of reinforcement material (m'[r])
    7.6 Mica content
    7,7 Size of splittings
8 Tensile strength and elongation at break
    8.1 Test apparatus
    8.2 Test specimen
    8.3 Procedure
    8.4 Statement of results
9 Flexural strength and elastic modulus in bend
    9.1 Test specimen
    9.2 Procedure
10 Folding
11 Stiffness
    11.1 Conditioning and test atmosphere
    11.2 Test specimens
    11.3 Procedure
    11.4 Statement of results
12 Resistance to exudation and displacement
    12.1 Test apparatus
    12.2 Test specimen
    12.3 Procedure
    12.4 Statement of results
13 Elastic compression and plastic compression
    13.1 Test apparatus
    13.2 Test specimen
    13.3 Procedure
    13.4 Statement of results
14 Resin flow and consolidation
    14.1 Test specimen
    14.2 Procedure
    14.3 Statement of results
15 Gel time
16 Electric strength
    16.1 Electrodes
    16.2 Test specimen
    16.3 Procedure
    16.4 Statement of results
17 Dissipation factor/temperature characteristics at
    frequencies of between 48 Hz and 62 Hz
    17.1 Test specimen
    17.2 Test conditions
    17.3 Electrodes
    17.4 Procedure
    17.5 Statement of results
18 Dissipation factor/voltage characteristics at frequencies
    of between 48 Hz and 62 hz
    18.1 Test specimen
    18.2 Test conditions
    18.3 Electrodes
    18.4 Procedure
    18.5 Statement of results
19 Detection of defects and conductive particles
20 Penetration
    20.1 Test apparatus
    20.3 Test specimens
    20.3 Method of test
    20.4 Statement of results
21 Thermal endurance
Annex A (normative)
Figures

Defines the methods of test which are applicable to built-up mica materials, products based on them and mica paper. The main changes from the previous edition are as follows: a) All clauses re-numbered. b) Relevant template of ISO 67 has been added to this standard as Annex A. c) Clause 8: Tensile strength and elongation at break Procedure modified to give "rate of movement" instead of "time limit". Different rate of movement for raw mica as opposed to reinforced and/or impregnated mica. d) Clause 11: Stiffness Size of test specimen revised. Wording modified so that standard covers materials using carriers other than woven glass cloth and materials that are 3-ply. Revision of terms "machine direction" and "transverse direction". (These were incorrect in second edition (1987).) e) Clause 13: Elastic compression and plastic compression Tolerance on measurement of height of stack changed to within 0,01 mm. Times for change in pressure in procedure changed to 1 min. f) Clause 16: Electric strength Modified in line with Amendment 1 (1994) to the second edition (1987). Changes relate to latest edition of IEC 60243-1. g) Clause 19: Detection of defects and conductive particles Revised subclause.